./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 a31fd051 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-?-a31fd05 [2023-02-15 10:26:45,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:26:45,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:26:45,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:26:45,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:26:45,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:26:45,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:26:45,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:26:45,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:26:45,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:26:45,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:26:45,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:26:45,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:26:45,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:26:45,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:26:45,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:26:45,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:26:45,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:26:45,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:26:45,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:26:45,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:26:45,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:26:45,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:26:45,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:26:45,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:26:45,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:26:45,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:26:45,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:26:45,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:26:45,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:26:45,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:26:45,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:26:45,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:26:45,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:26:45,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:26:45,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:26:45,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:26:45,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:26:45,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:26:45,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:26:45,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:26:45,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:26:45,837 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:26:45,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:26:45,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:26:45,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:26:45,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:26:45,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:26:45,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:26:45,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:26:45,839 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:26:45,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:26:45,839 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:26:45,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:26:45,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:26:45,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:26:45,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:26:45,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:26:45,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:26:45,840 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:26:45,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:26:45,840 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:26:45,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:26:45,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:26:45,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:26:45,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:26:45,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:26:45,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:26:45,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:26:45,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:26:45,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:26:45,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:26:45,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:26:45,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:26:45,842 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:26:45,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:26:45,843 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:26:45,843 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2023-02-15 10:26:46,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:26:46,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:26:46,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:26:46,038 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:26:46,039 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:26:46,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-15 10:26:46,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:26:47,361 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:26:47,362 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-15 10:26:47,386 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f85450c/3beb2888e1344a72a71e57c1e26c552f/FLAGca41979ee [2023-02-15 10:26:47,407 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f85450c/3beb2888e1344a72a71e57c1e26c552f [2023-02-15 10:26:47,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:26:47,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:26:47,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:26:47,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:26:47,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:26:47,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:26:47" (1/1) ... [2023-02-15 10:26:47,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a63989c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:47, skipping insertion in model container [2023-02-15 10:26:47,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:26:47" (1/1) ... [2023-02-15 10:26:47,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:26:47,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:26:47,855 WARN L237 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] [2023-02-15 10:26:47,883 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 10:26:47,888 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 10:26:48,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:26:48,132 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:26:48,190 WARN L237 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] [2023-02-15 10:26:48,197 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 10:26:48,199 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 10:26:48,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:26:48,422 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:26:48,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48 WrapperNode [2023-02-15 10:26:48,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:26:48,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:26:48,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:26:48,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:26:48,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,586 INFO L138 Inliner]: procedures = 126, calls = 2882, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3051 [2023-02-15 10:26:48,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:26:48,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:26:48,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:26:48,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:26:48,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:26:48,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:26:48,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:26:48,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:26:48,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (1/1) ... [2023-02-15 10:26:48,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:26:48,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:26:48,789 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) [2023-02-15 10:26:48,824 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 [2023-02-15 10:26:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-15 10:26:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-15 10:26:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-02-15 10:26:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-15 10:26:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-15 10:26:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:26:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-15 10:26:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-15 10:26:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-15 10:26:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-15 10:26:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-15 10:26:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-15 10:26:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-15 10:26:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-15 10:26:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:26:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-15 10:26:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-15 10:26:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-15 10:26:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-15 10:26:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-15 10:26:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-15 10:26:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-15 10:26:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-15 10:26:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-15 10:26:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-15 10:26:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-15 10:26:48,851 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-15 10:26:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-15 10:26:48,851 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-15 10:26:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:26:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:26:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-15 10:26:48,851 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-15 10:26:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-15 10:26:48,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-15 10:26:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 10:26:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 10:26:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-15 10:26:48,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-15 10:26:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 10:26:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-15 10:26:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-15 10:26:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:26:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-15 10:26:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-15 10:26:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:26:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-15 10:26:48,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-15 10:26:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-02-15 10:26:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-15 10:26:48,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-15 10:26:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:26:48,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:26:49,261 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:26:49,263 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:26:49,310 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,331 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 10:26:49,332 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 10:26:49,340 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,445 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 10:26:49,445 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 10:26:49,460 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,475 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-15 10:26:49,475 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-15 10:26:49,559 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,576 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-15 10:26:49,577 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-15 10:26:49,577 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,578 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,578 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-15 10:26:49,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 10:26:49,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 10:26:49,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-15 10:26:49,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-15 10:26:49,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-15 10:26:49,672 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,681 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:49,682 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,049 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-15 10:26:50,050 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-15 10:26:50,050 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-15 10:26:50,050 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-15 10:26:50,051 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-15 10:26:50,051 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-15 10:26:50,071 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 10:26:50,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 10:26:50,098 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,099 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,100 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,101 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,101 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,103 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,103 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:50,104 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:26:53,284 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-15 10:26:53,284 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-15 10:26:53,284 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-15 10:26:53,284 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-15 10:26:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-15 10:26:53,303 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:26:53,314 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:26:53,315 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 10:26:53,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:26:53 BoogieIcfgContainer [2023-02-15 10:26:53,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:26:53,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:26:53,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:26:53,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:26:53,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:26:47" (1/3) ... [2023-02-15 10:26:53,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15eaa6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:26:53, skipping insertion in model container [2023-02-15 10:26:53,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:26:48" (2/3) ... [2023-02-15 10:26:53,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15eaa6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:26:53, skipping insertion in model container [2023-02-15 10:26:53,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:26:53" (3/3) ... [2023-02-15 10:26:53,325 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2023-02-15 10:26:53,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:26:53,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:26:53,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:26:53,393 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@203f21dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:26:53,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:26:53,399 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) [2023-02-15 10:26:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 10:26:53,405 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:26:53,405 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] [2023-02-15 10:26:53,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:26:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:26:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash -197079634, now seen corresponding path program 1 times [2023-02-15 10:26:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:26:53,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144632523] [2023-02-15 10:26:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:26:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:26:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:26:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:26:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:26:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:26:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:26:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:26:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:26:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144632523] [2023-02-15 10:26:53,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144632523] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:26:53,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:26:53,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:26:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730707176] [2023-02-15 10:26:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:26:53,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:26:53,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:26:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:26:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:26:53,891 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) [2023-02-15 10:26:57,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:26:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:26:57,639 INFO L93 Difference]: Finished difference Result 1130 states and 1773 transitions. [2023-02-15 10:26:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:26:57,641 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 [2023-02-15 10:26:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:26:57,655 INFO L225 Difference]: With dead ends: 1130 [2023-02-15 10:26:57,657 INFO L226 Difference]: Without dead ends: 639 [2023-02-15 10:26:57,664 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 [2023-02-15 10:26:57,670 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 412 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 207 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-15 10:26:57,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2006 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 856 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2023-02-15 10:26:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-15 10:26:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-15 10:26:57,734 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) [2023-02-15 10:26:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2023-02-15 10:26:57,738 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 26 [2023-02-15 10:26:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:26:57,739 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2023-02-15 10:26:57,739 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) [2023-02-15 10:26:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2023-02-15 10:26:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 10:26:57,740 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:26:57,740 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] [2023-02-15 10:26:57,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:26:57,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:26:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:26:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash -169212496, now seen corresponding path program 1 times [2023-02-15 10:26:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:26:57,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293674088] [2023-02-15 10:26:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:26:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:26:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:26:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:26:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:26:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:26:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:26:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:26:58,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:26:58,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293674088] [2023-02-15 10:26:58,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293674088] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:26:58,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:26:58,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:26:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449814831] [2023-02-15 10:26:58,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:26:58,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:26:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:26:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:26:58,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:26:58,065 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) [2023-02-15 10:27:02,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:02,193 INFO L93 Difference]: Finished difference Result 1183 states and 1738 transitions. [2023-02-15 10:27:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:27:02,193 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 [2023-02-15 10:27:02,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:02,198 INFO L225 Difference]: With dead ends: 1183 [2023-02-15 10:27:02,198 INFO L226 Difference]: Without dead ends: 639 [2023-02-15 10:27:02,199 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 [2023-02-15 10:27:02,200 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 374 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:02,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2604 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1047 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-02-15 10:27:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-15 10:27:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-15 10:27:02,244 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) [2023-02-15 10:27:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 817 transitions. [2023-02-15 10:27:02,248 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 817 transitions. Word has length 29 [2023-02-15 10:27:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:02,248 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 817 transitions. [2023-02-15 10:27:02,248 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) [2023-02-15 10:27:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 817 transitions. [2023-02-15 10:27:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 10:27:02,249 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:02,250 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] [2023-02-15 10:27:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:27:02,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1081663514, now seen corresponding path program 1 times [2023-02-15 10:27:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:02,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622098545] [2023-02-15 10:27:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:02,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:02,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:02,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622098545] [2023-02-15 10:27:02,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622098545] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:02,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:02,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:27:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117450233] [2023-02-15 10:27:02,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:02,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:27:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:27:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:02,578 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) [2023-02-15 10:27:06,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:06,918 INFO L93 Difference]: Finished difference Result 1494 states and 2232 transitions. [2023-02-15 10:27:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:27:06,919 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 [2023-02-15 10:27:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:06,925 INFO L225 Difference]: With dead ends: 1494 [2023-02-15 10:27:06,926 INFO L226 Difference]: Without dead ends: 1093 [2023-02-15 10:27:06,927 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 [2023-02-15 10:27:06,927 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1344 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 361 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:06,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2251 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-02-15 10:27:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-02-15 10:27:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 979. [2023-02-15 10:27:06,982 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) [2023-02-15 10:27:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1446 transitions. [2023-02-15 10:27:06,988 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1446 transitions. Word has length 33 [2023-02-15 10:27:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:06,988 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1446 transitions. [2023-02-15 10:27:06,990 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) [2023-02-15 10:27:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1446 transitions. [2023-02-15 10:27:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 10:27:06,997 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:06,998 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] [2023-02-15 10:27:06,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 10:27:06,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144769, now seen corresponding path program 1 times [2023-02-15 10:27:06,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:06,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432041375] [2023-02-15 10:27:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:06,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-15 10:27:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:07,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:07,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432041375] [2023-02-15 10:27:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432041375] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:07,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:07,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:27:07,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707871611] [2023-02-15 10:27:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:07,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:27:07,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:27:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:07,362 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) [2023-02-15 10:27:10,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:11,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:11,503 INFO L93 Difference]: Finished difference Result 1814 states and 2766 transitions. [2023-02-15 10:27:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:27:11,505 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 [2023-02-15 10:27:11,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:11,511 INFO L225 Difference]: With dead ends: 1814 [2023-02-15 10:27:11,511 INFO L226 Difference]: Without dead ends: 1796 [2023-02-15 10:27:11,512 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 [2023-02-15 10:27:11,513 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1471 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 344 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:11,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1899 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-02-15 10:27:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-02-15 10:27:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1569. [2023-02-15 10:27:11,556 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) [2023-02-15 10:27:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2364 transitions. [2023-02-15 10:27:11,563 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2364 transitions. Word has length 45 [2023-02-15 10:27:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:11,564 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2364 transitions. [2023-02-15 10:27:11,564 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) [2023-02-15 10:27:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2364 transitions. [2023-02-15 10:27:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 10:27:11,565 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:11,565 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] [2023-02-15 10:27:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 10:27:11,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1069708837, now seen corresponding path program 1 times [2023-02-15 10:27:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:11,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655249200] [2023-02-15 10:27:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:11,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655249200] [2023-02-15 10:27:11,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655249200] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:11,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:11,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:27:11,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747318104] [2023-02-15 10:27:11,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:11,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:27:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:11,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:27:11,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:11,725 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) [2023-02-15 10:27:14,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:15,166 INFO L93 Difference]: Finished difference Result 1793 states and 2748 transitions. [2023-02-15 10:27:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:27:15,167 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 [2023-02-15 10:27:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:15,174 INFO L225 Difference]: With dead ends: 1793 [2023-02-15 10:27:15,174 INFO L226 Difference]: Without dead ends: 1789 [2023-02-15 10:27:15,188 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 [2023-02-15 10:27:15,189 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 485 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:15,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1895 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-02-15 10:27:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-02-15 10:27:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2023-02-15 10:27:15,231 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) [2023-02-15 10:27:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2411 transitions. [2023-02-15 10:27:15,238 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2411 transitions. Word has length 43 [2023-02-15 10:27:15,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:15,238 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2411 transitions. [2023-02-15 10:27:15,239 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) [2023-02-15 10:27:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2411 transitions. [2023-02-15 10:27:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 10:27:15,240 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:15,240 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] [2023-02-15 10:27:15,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 10:27:15,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:15,241 INFO L85 PathProgramCache]: Analyzing trace with hash -897411344, now seen corresponding path program 1 times [2023-02-15 10:27:15,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:15,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330021306] [2023-02-15 10:27:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:15,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:15,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330021306] [2023-02-15 10:27:15,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330021306] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:15,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:15,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:27:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079221675] [2023-02-15 10:27:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:27:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:27:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:15,435 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) [2023-02-15 10:27:19,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:21,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:22,626 INFO L93 Difference]: Finished difference Result 3169 states and 4941 transitions. [2023-02-15 10:27:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:27:22,626 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 [2023-02-15 10:27:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:22,653 INFO L225 Difference]: With dead ends: 3169 [2023-02-15 10:27:22,653 INFO L226 Difference]: Without dead ends: 3166 [2023-02-15 10:27:22,655 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 [2023-02-15 10:27:22,656 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 934 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 264 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:22,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2714 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1306 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2023-02-15 10:27:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2023-02-15 10:27:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2550. [2023-02-15 10:27:22,738 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) [2023-02-15 10:27:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3881 transitions. [2023-02-15 10:27:22,753 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3881 transitions. Word has length 45 [2023-02-15 10:27:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:22,753 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3881 transitions. [2023-02-15 10:27:22,753 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) [2023-02-15 10:27:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3881 transitions. [2023-02-15 10:27:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 10:27:22,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:22,755 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] [2023-02-15 10:27:22,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 10:27:22,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash -285485209, now seen corresponding path program 1 times [2023-02-15 10:27:22,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:22,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313598344] [2023-02-15 10:27:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:22,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:23,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:23,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 10:27:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:27:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:23,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:23,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313598344] [2023-02-15 10:27:23,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313598344] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:23,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:23,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:27:23,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377383286] [2023-02-15 10:27:23,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:23,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:27:23,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:27:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:27:23,148 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) [2023-02-15 10:27:27,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:29,289 INFO L93 Difference]: Finished difference Result 3798 states and 5980 transitions. [2023-02-15 10:27:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 10:27:29,290 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 [2023-02-15 10:27:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:29,303 INFO L225 Difference]: With dead ends: 3798 [2023-02-15 10:27:29,304 INFO L226 Difference]: Without dead ends: 3790 [2023-02-15 10:27:29,305 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 [2023-02-15 10:27:29,306 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 2755 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 963 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:29,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 2975 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2227 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-02-15 10:27:29,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2023-02-15 10:27:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3139. [2023-02-15 10:27:29,401 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) [2023-02-15 10:27:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4829 transitions. [2023-02-15 10:27:29,411 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4829 transitions. Word has length 47 [2023-02-15 10:27:29,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:29,412 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4829 transitions. [2023-02-15 10:27:29,412 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) [2023-02-15 10:27:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4829 transitions. [2023-02-15 10:27:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 10:27:29,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:29,413 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] [2023-02-15 10:27:29,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 10:27:29,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1518670529, now seen corresponding path program 1 times [2023-02-15 10:27:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473793400] [2023-02-15 10:27:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-15 10:27:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:29,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473793400] [2023-02-15 10:27:29,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473793400] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:29,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:29,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:27:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376410079] [2023-02-15 10:27:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:27:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:27:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:29,587 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) [2023-02-15 10:27:33,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:35,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:36,099 INFO L93 Difference]: Finished difference Result 9987 states and 15921 transitions. [2023-02-15 10:27:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:27:36,100 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 [2023-02-15 10:27:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:36,124 INFO L225 Difference]: With dead ends: 9987 [2023-02-15 10:27:36,124 INFO L226 Difference]: Without dead ends: 7066 [2023-02-15 10:27:36,136 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 [2023-02-15 10:27:36,137 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 1339 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:36,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2251 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 960 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2023-02-15 10:27:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2023-02-15 10:27:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 6230. [2023-02-15 10:27:36,368 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) [2023-02-15 10:27:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9775 transitions. [2023-02-15 10:27:36,387 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9775 transitions. Word has length 46 [2023-02-15 10:27:36,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:36,388 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 9775 transitions. [2023-02-15 10:27:36,388 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) [2023-02-15 10:27:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9775 transitions. [2023-02-15 10:27:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 10:27:36,389 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:36,389 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] [2023-02-15 10:27:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 10:27:36,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2006170664, now seen corresponding path program 1 times [2023-02-15 10:27:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:36,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907365540] [2023-02-15 10:27:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:36,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:36,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:36,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907365540] [2023-02-15 10:27:36,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907365540] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:36,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:36,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:27:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177786068] [2023-02-15 10:27:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:36,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:27:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:27:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:27:36,726 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) [2023-02-15 10:27:39,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:41,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:43,104 INFO L93 Difference]: Finished difference Result 13181 states and 20868 transitions. [2023-02-15 10:27:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 10:27:43,104 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 [2023-02-15 10:27:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:43,131 INFO L225 Difference]: With dead ends: 13181 [2023-02-15 10:27:43,131 INFO L226 Difference]: Without dead ends: 7261 [2023-02-15 10:27:43,147 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 [2023-02-15 10:27:43,147 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2253 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 604 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:43,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 2158 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 1249 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2023-02-15 10:27:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2023-02-15 10:27:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6221. [2023-02-15 10:27:43,417 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) [2023-02-15 10:27:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9754 transitions. [2023-02-15 10:27:43,442 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9754 transitions. Word has length 46 [2023-02-15 10:27:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:43,443 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9754 transitions. [2023-02-15 10:27:43,443 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) [2023-02-15 10:27:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9754 transitions. [2023-02-15 10:27:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-15 10:27:43,444 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:43,445 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] [2023-02-15 10:27:43,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 10:27:43,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:43,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1859253020, now seen corresponding path program 1 times [2023-02-15 10:27:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600396011] [2023-02-15 10:27:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-15 10:27:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:27:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:43,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:43,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600396011] [2023-02-15 10:27:43,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600396011] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:43,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:43,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:27:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862639230] [2023-02-15 10:27:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:27:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:27:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:27:43,818 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) [2023-02-15 10:27:48,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:50,319 INFO L93 Difference]: Finished difference Result 7131 states and 11388 transitions. [2023-02-15 10:27:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 10:27:50,320 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 [2023-02-15 10:27:50,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:50,338 INFO L225 Difference]: With dead ends: 7131 [2023-02-15 10:27:50,339 INFO L226 Difference]: Without dead ends: 7126 [2023-02-15 10:27:50,340 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 [2023-02-15 10:27:50,341 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 2551 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 826 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:50,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2611 Valid, 2921 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 2221 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-02-15 10:27:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2023-02-15 10:27:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6221. [2023-02-15 10:27:50,578 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) [2023-02-15 10:27:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9753 transitions. [2023-02-15 10:27:50,596 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9753 transitions. Word has length 49 [2023-02-15 10:27:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:50,596 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9753 transitions. [2023-02-15 10:27:50,597 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) [2023-02-15 10:27:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9753 transitions. [2023-02-15 10:27:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-15 10:27:50,598 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:50,598 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] [2023-02-15 10:27:50,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 10:27:50,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:50,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:50,598 INFO L85 PathProgramCache]: Analyzing trace with hash -611856162, now seen corresponding path program 1 times [2023-02-15 10:27:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:50,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12988188] [2023-02-15 10:27:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:50,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 10:27:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 10:27:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:27:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:51,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12988188] [2023-02-15 10:27:51,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12988188] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:51,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:51,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 10:27:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647947687] [2023-02-15 10:27:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 10:27:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 10:27:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-15 10:27:51,053 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) [2023-02-15 10:27:55,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:57,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:27:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:58,430 INFO L93 Difference]: Finished difference Result 13280 states and 21298 transitions. [2023-02-15 10:27:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:27:58,430 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 [2023-02-15 10:27:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:58,449 INFO L225 Difference]: With dead ends: 13280 [2023-02-15 10:27:58,450 INFO L226 Difference]: Without dead ends: 7024 [2023-02-15 10:27:58,477 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 [2023-02-15 10:27:58,478 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 690 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:58,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2846 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1853 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2023-02-15 10:27:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-02-15 10:27:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6248. [2023-02-15 10:27:58,724 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) [2023-02-15 10:27:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 9783 transitions. [2023-02-15 10:27:58,744 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 9783 transitions. Word has length 49 [2023-02-15 10:27:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:58,745 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 9783 transitions. [2023-02-15 10:27:58,745 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) [2023-02-15 10:27:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 9783 transitions. [2023-02-15 10:27:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-15 10:27:58,746 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:58,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:27:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 10:27:58,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:58,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1588923091, now seen corresponding path program 1 times [2023-02-15 10:27:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:58,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780927981] [2023-02-15 10:27:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:59,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 10:27:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-15 10:27:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:27:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:59,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:59,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780927981] [2023-02-15 10:27:59,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780927981] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:27:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628625651] [2023-02-15 10:27:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:59,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:27:59,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:27:59,309 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) [2023-02-15 10:27:59,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:27:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:59,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 10:27:59,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:28:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:00,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:28:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:00,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628625651] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:28:00,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:28:00,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-02-15 10:28:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363839707] [2023-02-15 10:28:00,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:28:00,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 10:28:00,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 10:28:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:28:00,111 INFO L87 Difference]: Start difference. First operand 6248 states and 9783 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 10 states have internal predecessors, (61), 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) [2023-02-15 10:28:04,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:05,260 INFO L93 Difference]: Finished difference Result 13331 states and 21354 transitions. [2023-02-15 10:28:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 10:28:05,261 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 10 states have internal predecessors, (61), 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 51 [2023-02-15 10:28:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:05,278 INFO L225 Difference]: With dead ends: 13331 [2023-02-15 10:28:05,278 INFO L226 Difference]: Without dead ends: 7047 [2023-02-15 10:28:05,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-02-15 10:28:05,296 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1087 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 426 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:05,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 2611 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1561 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-02-15 10:28:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7047 states. [2023-02-15 10:28:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7047 to 6271. [2023-02-15 10:28:05,554 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) [2023-02-15 10:28:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9806 transitions. [2023-02-15 10:28:05,572 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9806 transitions. Word has length 51 [2023-02-15 10:28:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:05,572 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 9806 transitions. [2023-02-15 10:28:05,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 10 states have internal predecessors, (61), 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) [2023-02-15 10:28:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9806 transitions. [2023-02-15 10:28:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-15 10:28:05,573 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:05,573 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, 1] [2023-02-15 10:28:05,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:28:05,786 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 [2023-02-15 10:28:05,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1153105173, now seen corresponding path program 2 times [2023-02-15 10:28:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:05,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435649390] [2023-02-15 10:28:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 10:28:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 10:28:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:06,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435649390] [2023-02-15 10:28:06,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435649390] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:28:06,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399583179] [2023-02-15 10:28:06,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:28:06,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:28:06,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:28:06,474 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) [2023-02-15 10:28:06,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:28:08,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:28:08,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:28:08,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 10:28:08,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:28:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:08,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:28:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:09,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399583179] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:28:09,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:28:09,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2023-02-15 10:28:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420200823] [2023-02-15 10:28:09,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:28:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 10:28:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 10:28:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-02-15 10:28:09,043 INFO L87 Difference]: Start difference. First operand 6271 states and 9806 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 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) [2023-02-15 10:28:15,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:16,632 INFO L93 Difference]: Finished difference Result 13497 states and 21603 transitions. [2023-02-15 10:28:16,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 10:28:16,633 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 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 54 [2023-02-15 10:28:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:16,686 INFO L225 Difference]: With dead ends: 13497 [2023-02-15 10:28:16,686 INFO L226 Difference]: Without dead ends: 7113 [2023-02-15 10:28:16,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2023-02-15 10:28:16,701 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 734 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 237 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 4879 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:16,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 4879 Invalid, 3537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 3299 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2023-02-15 10:28:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2023-02-15 10:28:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 6337. [2023-02-15 10:28:16,944 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) [2023-02-15 10:28:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9872 transitions. [2023-02-15 10:28:16,963 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9872 transitions. Word has length 54 [2023-02-15 10:28:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 9872 transitions. [2023-02-15 10:28:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 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) [2023-02-15 10:28:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9872 transitions. [2023-02-15 10:28:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-15 10:28:16,964 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:16,964 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] [2023-02-15 10:28:16,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:28:17,177 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 [2023-02-15 10:28:17,177 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:17,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:17,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1523908574, now seen corresponding path program 1 times [2023-02-15 10:28:17,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:17,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761575433] [2023-02-15 10:28:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:17,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-15 10:28:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-15 10:28:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:18,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:18,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761575433] [2023-02-15 10:28:18,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761575433] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:28:18,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108545067] [2023-02-15 10:28:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:18,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:28:18,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:28:18,295 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) [2023-02-15 10:28:18,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:28:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:19,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 10:28:19,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:28:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:19,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:28:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:19,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108545067] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:28:19,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:28:19,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 41 [2023-02-15 10:28:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254638928] [2023-02-15 10:28:19,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:28:19,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-15 10:28:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-15 10:28:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1275, Unknown=0, NotChecked=0, Total=1640 [2023-02-15 10:28:19,876 INFO L87 Difference]: Start difference. First operand 6337 states and 9872 transitions. Second operand has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 37 states have internal predecessors, (87), 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) [2023-02-15 10:28:33,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:35,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:37,557 INFO L93 Difference]: Finished difference Result 13809 states and 22041 transitions. [2023-02-15 10:28:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-15 10:28:37,558 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 37 states have internal predecessors, (87), 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 59 [2023-02-15 10:28:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:37,575 INFO L225 Difference]: With dead ends: 13809 [2023-02-15 10:28:37,575 INFO L226 Difference]: Without dead ends: 7245 [2023-02-15 10:28:37,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1529, Invalid=5611, Unknown=0, NotChecked=0, Total=7140 [2023-02-15 10:28:37,593 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 791 mSDsluCounter, 7378 mSDsCounter, 0 mSdLazyCounter, 5535 mSolverCounterSat, 252 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 7941 SdHoareTripleChecker+Invalid, 5789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 5535 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:37,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 7941 Invalid, 5789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 5535 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2023-02-15 10:28:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2023-02-15 10:28:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6469. [2023-02-15 10:28:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6469 states, 5561 states have (on average 1.4768926452076965) internal successors, (8213), 5726 states have internal predecessors, (8213), 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) [2023-02-15 10:28:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10004 transitions. [2023-02-15 10:28:37,889 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10004 transitions. Word has length 59 [2023-02-15 10:28:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:37,889 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10004 transitions. [2023-02-15 10:28:37,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 37 states have internal predecessors, (87), 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) [2023-02-15 10:28:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10004 transitions. [2023-02-15 10:28:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-15 10:28:37,890 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:37,891 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:28:37,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 10:28:38,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:28:38,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1149216747, now seen corresponding path program 3 times [2023-02-15 10:28:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:38,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699861318] [2023-02-15 10:28:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 10:28:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-15 10:28:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:28:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699861318] [2023-02-15 10:28:40,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699861318] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:28:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788936543] [2023-02-15 10:28:40,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:28:40,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:28:40,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:28:40,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:28:40,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process