./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:18:37,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:18:37,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:18:37,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:18:37,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:18:37,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:18:37,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:18:37,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:18:37,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:18:37,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:18:37,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:18:37,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:18:37,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:18:37,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:18:37,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:18:37,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:18:37,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:18:37,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:18:37,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:18:37,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:18:37,503 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:18:37,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:18:37,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:18:37,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:18:37,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:18:37,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:18:37,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:18:37,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:18:37,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:18:37,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:18:37,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:18:37,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:18:37,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:18:37,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:18:37,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:18:37,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:18:37,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:18:37,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:18:37,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:18:37,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:18:37,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:18:37,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:18:37,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:18:37,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:18:37,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:18:37,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:18:37,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:18:37,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:18:37,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:18:37,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:18:37,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:18:37,579 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:18:37,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:18:37,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:18:37,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:18:37,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:18:37,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:18:37,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:18:37,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:18:37,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:18:37,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:18:37,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:18:37,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:18:37,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:18:37,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:18:37,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:18:37,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:18:37,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:18:37,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:18:37,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:18:37,583 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:18:37,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:18:37,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:18:37,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2022-07-12 12:18:37,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:18:38,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:18:38,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:18:38,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:18:38,023 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:18:38,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-12 12:18:38,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8122e7853/f734c62cb90149ccaa043e6b6968dd9f/FLAG2c21de785 [2022-07-12 12:18:39,145 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:18:39,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-12 12:18:39,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8122e7853/f734c62cb90149ccaa043e6b6968dd9f/FLAG2c21de785 [2022-07-12 12:18:39,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8122e7853/f734c62cb90149ccaa043e6b6968dd9f [2022-07-12 12:18:39,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:18:39,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:18:39,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:18:39,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:18:39,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:18:39,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:18:39" (1/1) ... [2022-07-12 12:18:39,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ce8ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:39, skipping insertion in model container [2022-07-12 12:18:39,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:18:39" (1/1) ... [2022-07-12 12:18:39,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:18:39,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:18:42,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-07-12 12:18:43,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:18:43,207 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:18:43,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-07-12 12:18:43,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:18:43,978 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:18:43,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43 WrapperNode [2022-07-12 12:18:43,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:18:43,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:18:43,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:18:43,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:18:44,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,367 INFO L137 Inliner]: procedures = 373, calls = 2971, calls flagged for inlining = 172, calls inlined = 164, statements flattened = 5915 [2022-07-12 12:18:44,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:18:44,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:18:44,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:18:44,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:18:44,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:18:44,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:18:44,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:18:44,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:18:44,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (1/1) ... [2022-07-12 12:18:44,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:18:44,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:18:44,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:18:44,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:18:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-07-12 12:18:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-07-12 12:18:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-07-12 12:18:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-07-12 12:18:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-07-12 12:18:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-07-12 12:18:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-07-12 12:18:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-07-12 12:18:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-12 12:18:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-12 12:18:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-12 12:18:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-12 12:18:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-12 12:18:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-12 12:18:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-12 12:18:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-12 12:18:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-07-12 12:18:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-07-12 12:18:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-12 12:18:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-12 12:18:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-07-12 12:18:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-07-12 12:18:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-07-12 12:18:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-07-12 12:18:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-07-12 12:18:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-07-12 12:18:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-07-12 12:18:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-07-12 12:18:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:18:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:18:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-12 12:18:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-12 12:18:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-07-12 12:18:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-07-12 12:18:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-07-12 12:18:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-07-12 12:18:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-07-12 12:18:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-07-12 12:18:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:18:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:18:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-12 12:18:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-12 12:18:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:18:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:18:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-07-12 12:18:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-07-12 12:18:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-07-12 12:18:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-07-12 12:18:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-12 12:18:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-12 12:18:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-07-12 12:18:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-07-12 12:18:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-12 12:18:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-12 12:18:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-12 12:18:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-12 12:18:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2022-07-12 12:18:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2022-07-12 12:18:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-07-12 12:18:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-07-12 12:18:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-07-12 12:18:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-07-12 12:18:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-07-12 12:18:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-07-12 12:18:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-07-12 12:18:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-07-12 12:18:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-07-12 12:18:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-07-12 12:18:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:18:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:18:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-07-12 12:18:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-07-12 12:18:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-12 12:18:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-12 12:18:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:18:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 12:18:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 12:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-07-12 12:18:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-07-12 12:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-07-12 12:18:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-07-12 12:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-07-12 12:18:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-07-12 12:18:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-07-12 12:18:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-07-12 12:18:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-12 12:18:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-12 12:18:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-07-12 12:18:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-07-12 12:18:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:18:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 12:18:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 12:18:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-12 12:18:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-07-12 12:18:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-07-12 12:18:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-07-12 12:18:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-07-12 12:18:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 12:18:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 12:18:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-07-12 12:18:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-07-12 12:18:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-07-12 12:18:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-07-12 12:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 12:18:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 12:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-12 12:18:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-12 12:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-07-12 12:18:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-07-12 12:18:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-12 12:18:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-12 12:18:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 12:18:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 12:18:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-07-12 12:18:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-07-12 12:18:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-07-12 12:18:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-07-12 12:18:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:18:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:18:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-12 12:18:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-12 12:18:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-07-12 12:18:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-07-12 12:18:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-07-12 12:18:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-07-12 12:18:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-12 12:18:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-12 12:18:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-07-12 12:18:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-07-12 12:18:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-12 12:18:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-12 12:18:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-12 12:18:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-12 12:18:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-07-12 12:18:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-07-12 12:18:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 12:18:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 12:18:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-07-12 12:18:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-07-12 12:18:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-07-12 12:18:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-07-12 12:18:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-07-12 12:18:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-07-12 12:18:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-07-12 12:18:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-07-12 12:18:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-07-12 12:18:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-07-12 12:18:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-07-12 12:18:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-07-12 12:18:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:18:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-07-12 12:18:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-07-12 12:18:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-12 12:18:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-12 12:18:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-12 12:18:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-12 12:18:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-07-12 12:18:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-07-12 12:18:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-07-12 12:18:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-07-12 12:18:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 12:18:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 12:18:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-12 12:18:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-12 12:18:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-07-12 12:18:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-07-12 12:18:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-07-12 12:18:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-07-12 12:18:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:18:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:18:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-12 12:18:45,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-12 12:18:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:18:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-07-12 12:18:45,017 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-07-12 12:18:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-12 12:18:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-12 12:18:45,017 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-12 12:18:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:18:45,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:18:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-07-12 12:18:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-07-12 12:18:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-07-12 12:18:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-07-12 12:18:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-07-12 12:18:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-07-12 12:18:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:18:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-07-12 12:18:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-07-12 12:18:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:18:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:18:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 12:18:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:18:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:18:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-12 12:18:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-12 12:18:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-07-12 12:18:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-07-12 12:18:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-07-12 12:18:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-07-12 12:18:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-12 12:18:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-12 12:18:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-07-12 12:18:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-07-12 12:18:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-07-12 12:18:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-07-12 12:18:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-12 12:18:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-12 12:18:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-07-12 12:18:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-07-12 12:18:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-07-12 12:18:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-07-12 12:18:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 12:18:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 12:18:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-07-12 12:18:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-07-12 12:18:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-12 12:18:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-12 12:18:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-07-12 12:18:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-07-12 12:18:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:18:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:18:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-07-12 12:18:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-07-12 12:18:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-12 12:18:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-12 12:18:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:18:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-12 12:18:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-12 12:18:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:18:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:18:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-12 12:18:45,023 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-12 12:18:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-07-12 12:18:45,023 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-07-12 12:18:46,102 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:18:46,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:18:57,136 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:18:57,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:18:57,177 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:18:57,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:18:57 BoogieIcfgContainer [2022-07-12 12:18:57,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:18:57,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:18:57,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:18:57,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:18:57,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:18:39" (1/3) ... [2022-07-12 12:18:57,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6e97d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:18:57, skipping insertion in model container [2022-07-12 12:18:57,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:18:43" (2/3) ... [2022-07-12 12:18:57,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6e97d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:18:57, skipping insertion in model container [2022-07-12 12:18:57,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:18:57" (3/3) ... [2022-07-12 12:18:57,212 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-12 12:18:57,235 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:18:57,236 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:18:57,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:18:57,427 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1083b4c5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3efaddb7 [2022-07-12 12:18:57,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:18:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) [2022-07-12 12:18:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-12 12:18:57,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:18:57,458 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] [2022-07-12 12:18:57,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:18:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:18:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1524047706, now seen corresponding path program 1 times [2022-07-12 12:18:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:18:57,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029902907] [2022-07-12 12:18:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:18:57,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:18:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:18:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:18:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:18:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:18:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:18:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:18:58,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:18:58,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029902907] [2022-07-12 12:18:58,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029902907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:18:58,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:18:58,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:18:58,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792786308] [2022-07-12 12:18:58,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:18:58,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:18:58,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:18:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:18:58,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:18:58,395 INFO L87 Difference]: Start difference. First operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:14,445 INFO L93 Difference]: Finished difference Result 5926 states and 8748 transitions. [2022-07-12 12:19:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:19:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-07-12 12:19:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:14,556 INFO L225 Difference]: With dead ends: 5926 [2022-07-12 12:19:14,556 INFO L226 Difference]: Without dead ends: 4084 [2022-07-12 12:19:14,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:19:14,623 INFO L413 NwaCegarLoop]: 2522 mSDtfsCounter, 5455 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 5125 mSolverCounterSat, 3205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5771 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 8330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3205 IncrementalHoareTripleChecker+Valid, 5125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:14,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5771 Valid, 4185 Invalid, 8330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3205 Valid, 5125 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-07-12 12:19:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2022-07-12 12:19:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 3549. [2022-07-12 12:19:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2469 states have (on average 1.296881328473066) internal successors, (3202), 2526 states have internal predecessors, (3202), 839 states have call successors, (839), 220 states have call predecessors, (839), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-12 12:19:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4983 transitions. [2022-07-12 12:19:15,324 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4983 transitions. Word has length 32 [2022-07-12 12:19:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:15,325 INFO L495 AbstractCegarLoop]: Abstraction has 3549 states and 4983 transitions. [2022-07-12 12:19:15,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4983 transitions. [2022-07-12 12:19:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 12:19:15,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:15,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:19:15,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:19:15,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:15,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1075164, now seen corresponding path program 1 times [2022-07-12 12:19:15,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:15,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830658103] [2022-07-12 12:19:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:19:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:19:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:19:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:15,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:19:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:19:15,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:15,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830658103] [2022-07-12 12:19:15,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830658103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:19:15,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:19:15,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:19:15,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799215761] [2022-07-12 12:19:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:19:15,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:19:15,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:19:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:19:15,739 INFO L87 Difference]: Start difference. First operand 3549 states and 4983 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:24,002 INFO L93 Difference]: Finished difference Result 4152 states and 5960 transitions. [2022-07-12 12:19:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:19:24,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-07-12 12:19:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:24,038 INFO L225 Difference]: With dead ends: 4152 [2022-07-12 12:19:24,054 INFO L226 Difference]: Without dead ends: 4149 [2022-07-12 12:19:24,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:19:24,061 INFO L413 NwaCegarLoop]: 2111 mSDtfsCounter, 3975 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:24,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4207 Valid, 3023 Invalid, 4562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-12 12:19:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2022-07-12 12:19:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 3548. [2022-07-12 12:19:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2469 states have (on average 1.2964763061968407) internal successors, (3201), 2525 states have internal predecessors, (3201), 838 states have call successors, (838), 220 states have call predecessors, (838), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-12 12:19:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4981 transitions. [2022-07-12 12:19:24,375 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4981 transitions. Word has length 33 [2022-07-12 12:19:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:24,375 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4981 transitions. [2022-07-12 12:19:24,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4981 transitions. [2022-07-12 12:19:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 12:19:24,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:24,393 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] [2022-07-12 12:19:24,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:19:24,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -35239011, now seen corresponding path program 1 times [2022-07-12 12:19:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:24,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466968494] [2022-07-12 12:19:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:24,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:19:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:19:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:19:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:19:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:19:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:24,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466968494] [2022-07-12 12:19:24,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466968494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:19:24,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:19:24,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:19:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633164778] [2022-07-12 12:19:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:19:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:19:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:19:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:19:24,633 INFO L87 Difference]: Start difference. First operand 3548 states and 4981 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:31,362 INFO L93 Difference]: Finished difference Result 4151 states and 5958 transitions. [2022-07-12 12:19:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:19:31,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-07-12 12:19:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:31,390 INFO L225 Difference]: With dead ends: 4151 [2022-07-12 12:19:31,390 INFO L226 Difference]: Without dead ends: 4148 [2022-07-12 12:19:31,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:19:31,397 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 3964 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 2109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 4579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2109 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:31,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4187 Valid, 3025 Invalid, 4579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2109 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-12 12:19:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-07-12 12:19:31,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3547. [2022-07-12 12:19:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 2469 states have (on average 1.2960712839206157) internal successors, (3200), 2524 states have internal predecessors, (3200), 837 states have call successors, (837), 220 states have call predecessors, (837), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-12 12:19:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 4979 transitions. [2022-07-12 12:19:31,553 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 4979 transitions. Word has length 34 [2022-07-12 12:19:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:31,554 INFO L495 AbstractCegarLoop]: Abstraction has 3547 states and 4979 transitions. [2022-07-12 12:19:31,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 4979 transitions. [2022-07-12 12:19:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-12 12:19:31,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:31,558 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] [2022-07-12 12:19:31,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:19:31,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1094313401, now seen corresponding path program 1 times [2022-07-12 12:19:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:31,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655304649] [2022-07-12 12:19:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:31,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:19:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:19:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:19:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:19:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:19:31,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:31,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655304649] [2022-07-12 12:19:31,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655304649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:19:31,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:19:31,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:19:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729173165] [2022-07-12 12:19:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:19:31,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:19:31,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:19:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:19:31,838 INFO L87 Difference]: Start difference. First operand 3547 states and 4979 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:36,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:36,661 INFO L93 Difference]: Finished difference Result 4288 states and 6099 transitions. [2022-07-12 12:19:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:19:36,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-07-12 12:19:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:36,690 INFO L225 Difference]: With dead ends: 4288 [2022-07-12 12:19:36,691 INFO L226 Difference]: Without dead ends: 4269 [2022-07-12 12:19:36,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:19:36,698 INFO L413 NwaCegarLoop]: 2168 mSDtfsCounter, 3880 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 2101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 4730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2101 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:36,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 3155 Invalid, 4730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2101 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-12 12:19:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2022-07-12 12:19:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 3660. [2022-07-12 12:19:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2557 states have (on average 1.2901838091513493) internal successors, (3299), 2609 states have internal predecessors, (3299), 840 states have call successors, (840), 242 states have call predecessors, (840), 262 states have return successors, (948), 827 states have call predecessors, (948), 829 states have call successors, (948) [2022-07-12 12:19:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5087 transitions. [2022-07-12 12:19:36,889 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5087 transitions. Word has length 35 [2022-07-12 12:19:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:36,890 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 5087 transitions. [2022-07-12 12:19:36,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:19:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5087 transitions. [2022-07-12 12:19:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-12 12:19:36,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:36,898 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:19:36,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:19:36,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:36,899 INFO L85 PathProgramCache]: Analyzing trace with hash 515000665, now seen corresponding path program 1 times [2022-07-12 12:19:36,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:36,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391762828] [2022-07-12 12:19:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:36,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:19:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:19:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:19:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:19:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 12:19:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:19:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:19:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 12:19:37,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:37,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391762828] [2022-07-12 12:19:37,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391762828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:19:37,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:19:37,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:19:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666542035] [2022-07-12 12:19:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:19:37,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:19:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:19:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:19:37,114 INFO L87 Difference]: Start difference. First operand 3660 states and 5087 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:19:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:43,641 INFO L93 Difference]: Finished difference Result 8494 states and 12125 transitions. [2022-07-12 12:19:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:19:43,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-07-12 12:19:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:43,664 INFO L225 Difference]: With dead ends: 8494 [2022-07-12 12:19:43,665 INFO L226 Difference]: Without dead ends: 4992 [2022-07-12 12:19:43,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:19:43,684 INFO L413 NwaCegarLoop]: 2302 mSDtfsCounter, 3254 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 6051 mSolverCounterSat, 2431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 8482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2431 IncrementalHoareTripleChecker+Valid, 6051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:43,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 5582 Invalid, 8482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2431 Valid, 6051 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-12 12:19:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2022-07-12 12:19:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4284. [2022-07-12 12:19:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 3032 states have (on average 1.3007915567282322) internal successors, (3944), 3075 states have internal predecessors, (3944), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-12 12:19:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6052 transitions. [2022-07-12 12:19:43,839 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6052 transitions. Word has length 58 [2022-07-12 12:19:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:43,839 INFO L495 AbstractCegarLoop]: Abstraction has 4284 states and 6052 transitions. [2022-07-12 12:19:43,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:19:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6052 transitions. [2022-07-12 12:19:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 12:19:43,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:43,844 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:19:43,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:19:43,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1001937349, now seen corresponding path program 1 times [2022-07-12 12:19:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:43,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268616523] [2022-07-12 12:19:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:19:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:19:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:19:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:19:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:19:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:19:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:19:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:19:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 12:19:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:44,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268616523] [2022-07-12 12:19:44,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268616523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:19:44,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:19:44,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:19:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213944095] [2022-07-12 12:19:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:19:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:19:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:19:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:19:44,041 INFO L87 Difference]: Start difference. First operand 4284 states and 6052 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:19:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:49,846 INFO L93 Difference]: Finished difference Result 9259 states and 13286 transitions. [2022-07-12 12:19:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:19:49,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-07-12 12:19:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:49,889 INFO L225 Difference]: With dead ends: 9259 [2022-07-12 12:19:49,889 INFO L226 Difference]: Without dead ends: 4994 [2022-07-12 12:19:49,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:19:49,917 INFO L413 NwaCegarLoop]: 2306 mSDtfsCounter, 2234 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 4743 mSolverCounterSat, 1556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 4934 SdHoareTripleChecker+Invalid, 6299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1556 IncrementalHoareTripleChecker+Valid, 4743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:49,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2463 Valid, 4934 Invalid, 6299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1556 Valid, 4743 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-12 12:19:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2022-07-12 12:19:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4285. [2022-07-12 12:19:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 3033 states have (on average 1.3006923837784372) internal successors, (3945), 3076 states have internal predecessors, (3945), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-12 12:19:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6053 transitions. [2022-07-12 12:19:50,176 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6053 transitions. Word has length 67 [2022-07-12 12:19:50,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:50,176 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6053 transitions. [2022-07-12 12:19:50,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:19:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6053 transitions. [2022-07-12 12:19:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 12:19:50,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:50,180 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:19:50,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:19:50,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:50,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1602163945, now seen corresponding path program 1 times [2022-07-12 12:19:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:50,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548956313] [2022-07-12 12:19:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:50,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:19:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:19:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:19:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:19:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:19:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:19:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 12:19:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:19:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 12:19:50,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:50,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548956313] [2022-07-12 12:19:50,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548956313] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:19:50,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238686111] [2022-07-12 12:19:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:50,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:19:50,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:19:50,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:19:50,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:19:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:51,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:19:51,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:19:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:19:51,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:19:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 12:19:51,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238686111] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:19:51,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:19:51,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-12 12:19:51,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405554134] [2022-07-12 12:19:51,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:19:51,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 12:19:51,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 12:19:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:19:51,235 INFO L87 Difference]: Start difference. First operand 4285 states and 6053 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:19:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:19:58,258 INFO L93 Difference]: Finished difference Result 9264 states and 13293 transitions. [2022-07-12 12:19:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:19:58,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2022-07-12 12:19:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:19:58,276 INFO L225 Difference]: With dead ends: 9264 [2022-07-12 12:19:58,277 INFO L226 Difference]: Without dead ends: 4999 [2022-07-12 12:19:58,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:19:58,293 INFO L413 NwaCegarLoop]: 2297 mSDtfsCounter, 2239 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 6534 mSolverCounterSat, 1563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 5837 SdHoareTripleChecker+Invalid, 8097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1563 IncrementalHoareTripleChecker+Valid, 6534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:19:58,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2468 Valid, 5837 Invalid, 8097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1563 Valid, 6534 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-12 12:19:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2022-07-12 12:19:58,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4291. [2022-07-12 12:19:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 3039 states have (on average 1.3000987166831195) internal successors, (3951), 3082 states have internal predecessors, (3951), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-12 12:19:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 6059 transitions. [2022-07-12 12:19:58,619 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 6059 transitions. Word has length 69 [2022-07-12 12:19:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:19:58,619 INFO L495 AbstractCegarLoop]: Abstraction has 4291 states and 6059 transitions. [2022-07-12 12:19:58,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:19:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 6059 transitions. [2022-07-12 12:19:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 12:19:58,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:19:58,623 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:19:58,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 12:19:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:19:58,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:19:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:19:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 526315605, now seen corresponding path program 2 times [2022-07-12 12:19:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:19:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885191390] [2022-07-12 12:19:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:19:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:19:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:19:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:19:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:19:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:19:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:19:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 12:19:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:19:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:19:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:19:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 12:19:59,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:19:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885191390] [2022-07-12 12:19:59,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885191390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:19:59,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:19:59,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:19:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052353725] [2022-07-12 12:19:59,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:19:59,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:19:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:19:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:19:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:19:59,231 INFO L87 Difference]: Start difference. First operand 4291 states and 6059 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:20:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:20:08,176 INFO L93 Difference]: Finished difference Result 9329 states and 13474 transitions. [2022-07-12 12:20:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 12:20:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-07-12 12:20:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:20:08,226 INFO L225 Difference]: With dead ends: 9329 [2022-07-12 12:20:08,226 INFO L226 Difference]: Without dead ends: 5205 [2022-07-12 12:20:08,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:20:08,245 INFO L413 NwaCegarLoop]: 3549 mSDtfsCounter, 6047 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 6155 mSolverCounterSat, 4459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6366 SdHoareTripleChecker+Valid, 6306 SdHoareTripleChecker+Invalid, 10614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4459 IncrementalHoareTripleChecker+Valid, 6155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:20:08,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6366 Valid, 6306 Invalid, 10614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4459 Valid, 6155 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-12 12:20:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2022-07-12 12:20:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 4212. [2022-07-12 12:20:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 2979 states have (on average 1.3037932192010742) internal successors, (3884), 3032 states have internal predecessors, (3884), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-12 12:20:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5893 transitions. [2022-07-12 12:20:08,487 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5893 transitions. Word has length 75 [2022-07-12 12:20:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:20:08,487 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5893 transitions. [2022-07-12 12:20:08,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:20:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5893 transitions. [2022-07-12 12:20:08,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 12:20:08,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:20:08,490 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:20:08,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:20:08,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:20:08,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:20:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1029372965, now seen corresponding path program 1 times [2022-07-12 12:20:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:20:08,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363624319] [2022-07-12 12:20:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:20:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:20:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:20:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:20:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:20:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:20:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:20:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 12:20:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:20:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:20:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:20:08,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363624319] [2022-07-12 12:20:08,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363624319] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:20:08,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179959053] [2022-07-12 12:20:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:20:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:20:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:20:08,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:20:08,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:20:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:09,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 12:20:09,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:20:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:09,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:20:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:09,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179959053] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:20:09,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:20:09,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-12 12:20:09,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449326949] [2022-07-12 12:20:09,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:20:09,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 12:20:09,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:20:09,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 12:20:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:20:09,666 INFO L87 Difference]: Start difference. First operand 4212 states and 5893 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:20:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:20:18,971 INFO L93 Difference]: Finished difference Result 9398 states and 13384 transitions. [2022-07-12 12:20:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 12:20:18,972 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2022-07-12 12:20:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:20:19,018 INFO L225 Difference]: With dead ends: 9398 [2022-07-12 12:20:19,039 INFO L226 Difference]: Without dead ends: 5212 [2022-07-12 12:20:19,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-07-12 12:20:19,059 INFO L413 NwaCegarLoop]: 2299 mSDtfsCounter, 3261 mSDsluCounter, 6065 mSDsCounter, 0 mSdLazyCounter, 11488 mSolverCounterSat, 2434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3486 SdHoareTripleChecker+Valid, 8364 SdHoareTripleChecker+Invalid, 13922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2434 IncrementalHoareTripleChecker+Valid, 11488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:20:19,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3486 Valid, 8364 Invalid, 13922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2434 Valid, 11488 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-07-12 12:20:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2022-07-12 12:20:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4224. [2022-07-12 12:20:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 2991 states have (on average 1.3025743898361752) internal successors, (3896), 3044 states have internal predecessors, (3896), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-12 12:20:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 5905 transitions. [2022-07-12 12:20:19,372 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 5905 transitions. Word has length 79 [2022-07-12 12:20:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:20:19,373 INFO L495 AbstractCegarLoop]: Abstraction has 4224 states and 5905 transitions. [2022-07-12 12:20:19,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:20:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 5905 transitions. [2022-07-12 12:20:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 12:20:19,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:20:19,379 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:20:19,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:20:19,599 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,SelfDestructingSolverStorable8 [2022-07-12 12:20:19,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:20:19,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:20:19,600 INFO L85 PathProgramCache]: Analyzing trace with hash -497810435, now seen corresponding path program 2 times [2022-07-12 12:20:19,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:20:19,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138988928] [2022-07-12 12:20:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:20:19,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:20:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:20:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:20:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:20:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:20:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:20:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:20:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:20:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:20:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:20,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:20:20,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138988928] [2022-07-12 12:20:20,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138988928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:20:20,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155052324] [2022-07-12 12:20:20,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:20:20,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:20:20,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:20:20,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:20:20,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 12:20:20,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:20:20,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:20:20,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 3233 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 12:20:20,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:20:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:20,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:20:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:21,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155052324] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:20:21,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:20:21,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 28 [2022-07-12 12:20:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267201084] [2022-07-12 12:20:21,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:20:21,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 12:20:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:20:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 12:20:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2022-07-12 12:20:21,227 INFO L87 Difference]: Start difference. First operand 4224 states and 5905 transitions. Second operand has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:20:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:20:28,826 INFO L93 Difference]: Finished difference Result 9422 states and 13414 transitions. [2022-07-12 12:20:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 12:20:28,827 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2022-07-12 12:20:28,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:20:28,892 INFO L225 Difference]: With dead ends: 9422 [2022-07-12 12:20:28,892 INFO L226 Difference]: Without dead ends: 5236 [2022-07-12 12:20:28,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2022-07-12 12:20:28,924 INFO L413 NwaCegarLoop]: 2300 mSDtfsCounter, 3286 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 7896 mSolverCounterSat, 2444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 6522 SdHoareTripleChecker+Invalid, 10340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2444 IncrementalHoareTripleChecker+Valid, 7896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:20:28,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 6522 Invalid, 10340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2444 Valid, 7896 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-07-12 12:20:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2022-07-12 12:20:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 4248. [2022-07-12 12:20:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4248 states, 3015 states have (on average 1.3001658374792704) internal successors, (3920), 3068 states have internal predecessors, (3920), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-12 12:20:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4248 states to 4248 states and 5929 transitions. [2022-07-12 12:20:29,205 INFO L78 Accepts]: Start accepts. Automaton has 4248 states and 5929 transitions. Word has length 91 [2022-07-12 12:20:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:20:29,206 INFO L495 AbstractCegarLoop]: Abstraction has 4248 states and 5929 transitions. [2022-07-12 12:20:29,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:20:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4248 states and 5929 transitions. [2022-07-12 12:20:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 12:20:29,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:20:29,209 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:20:29,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 12:20:29,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:20:29,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:20:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:20:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash 308086701, now seen corresponding path program 3 times [2022-07-12 12:20:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:20:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993687679] [2022-07-12 12:20:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:20:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:20:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:20:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:20:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:20:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:20:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 12:20:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 12:20:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:20:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 12:20:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:20:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993687679] [2022-07-12 12:20:30,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993687679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:20:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066056988] [2022-07-12 12:20:30,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 12:20:30,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:20:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:20:30,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:20:30,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 12:20:31,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 12:20:31,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:20:31,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 12:20:31,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:20:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-07-12 12:20:31,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:20:31,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066056988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:20:31,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:20:31,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [28] total 31 [2022-07-12 12:20:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563716547] [2022-07-12 12:20:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:20:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:20:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:20:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:20:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=617, Unknown=0, NotChecked=0, Total=930 [2022-07-12 12:20:31,544 INFO L87 Difference]: Start difference. First operand 4248 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 12:20:33,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:20:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:20:33,955 INFO L93 Difference]: Finished difference Result 8295 states and 11598 transitions. [2022-07-12 12:20:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:20:33,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 115 [2022-07-12 12:20:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:20:33,990 INFO L225 Difference]: With dead ends: 8295 [2022-07-12 12:20:33,991 INFO L226 Difference]: Without dead ends: 4232 [2022-07-12 12:20:34,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=733, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 12:20:34,020 INFO L413 NwaCegarLoop]: 2547 mSDtfsCounter, 4 mSDsluCounter, 7619 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10166 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:20:34,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10166 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 12:20:34,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2022-07-12 12:20:34,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4232. [2022-07-12 12:20:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 3006 states have (on average 1.2997338656021291) internal successors, (3907), 3057 states have internal predecessors, (3907), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:20:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 5908 transitions. [2022-07-12 12:20:34,308 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 5908 transitions. Word has length 115 [2022-07-12 12:20:34,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:20:34,308 INFO L495 AbstractCegarLoop]: Abstraction has 4232 states and 5908 transitions. [2022-07-12 12:20:34,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 12:20:34,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 5908 transitions. [2022-07-12 12:20:34,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 12:20:34,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:20:34,311 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:20:34,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 12:20:34,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:20:34,536 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:20:34,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:20:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash 773365027, now seen corresponding path program 1 times [2022-07-12 12:20:34,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:20:34,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650453595] [2022-07-12 12:20:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:20:34,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:20:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:20:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:20:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:20:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:20:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 12:20:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 12:20:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:20:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:20:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 12:20:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 12:20:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 12:20:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 12:20:35,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:20:35,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650453595] [2022-07-12 12:20:35,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650453595] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:20:35,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995307303] [2022-07-12 12:20:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:20:35,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:20:35,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:20:35,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:20:35,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 12:20:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:36,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 4277 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 12:20:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:20:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:36,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:20:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 12:20:36,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995307303] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:20:36,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:20:36,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2022-07-12 12:20:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939531431] [2022-07-12 12:20:36,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:20:36,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-12 12:20:36,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:20:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-12 12:20:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2022-07-12 12:20:36,821 INFO L87 Difference]: Start difference. First operand 4232 states and 5908 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:20:40,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:20:42,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:20:45,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:20:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:20:52,995 INFO L93 Difference]: Finished difference Result 9438 states and 13432 transitions. [2022-07-12 12:20:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 12:20:52,996 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2022-07-12 12:20:52,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:20:53,018 INFO L225 Difference]: With dead ends: 9438 [2022-07-12 12:20:53,018 INFO L226 Difference]: Without dead ends: 5268 [2022-07-12 12:20:53,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1193, Invalid=1669, Unknown=0, NotChecked=0, Total=2862 [2022-07-12 12:20:53,030 INFO L413 NwaCegarLoop]: 2280 mSDtfsCounter, 3322 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 9688 mSolverCounterSat, 2448 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3550 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 12139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2448 IncrementalHoareTripleChecker+Valid, 9688 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:20:53,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3550 Valid, 7333 Invalid, 12139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2448 Valid, 9688 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2022-07-12 12:20:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-07-12 12:20:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4280. [2022-07-12 12:20:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3054 states have (on average 1.2950229207596595) internal successors, (3955), 3105 states have internal predecessors, (3955), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:20:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5956 transitions. [2022-07-12 12:20:53,188 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5956 transitions. Word has length 139 [2022-07-12 12:20:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:20:53,188 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 5956 transitions. [2022-07-12 12:20:53,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:20:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5956 transitions. [2022-07-12 12:20:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-12 12:20:53,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:20:53,192 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:20:53,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 12:20:53,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 12:20:53,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:20:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:20:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1584813187, now seen corresponding path program 2 times [2022-07-12 12:20:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:20:53,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278450770] [2022-07-12 12:20:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:20:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:20:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:20:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:20:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:20:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:20:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 12:20:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 12:20:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:20:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:20:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 12:20:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 12:20:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 12:20:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:20:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 12:20:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:20:54,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278450770] [2022-07-12 12:20:54,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278450770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:20:54,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575336898] [2022-07-12 12:20:54,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:20:54,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:20:54,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:20:54,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:20:54,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 12:20:55,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:20:55,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:20:55,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 4637 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 12:20:55,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:20:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 6 proven. 2116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:20:56,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:20:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 12:20:58,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575336898] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:20:58,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:20:58,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 49, 49] total 100 [2022-07-12 12:20:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013110388] [2022-07-12 12:20:58,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:20:58,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-07-12 12:20:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:20:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-07-12 12:20:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4663, Invalid=5237, Unknown=0, NotChecked=0, Total=9900 [2022-07-12 12:20:58,864 INFO L87 Difference]: Start difference. First operand 4280 states and 5956 transitions. Second operand has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:21:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:21:07,895 INFO L93 Difference]: Finished difference Result 9534 states and 13552 transitions. [2022-07-12 12:21:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-07-12 12:21:07,896 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 187 [2022-07-12 12:21:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:21:07,925 INFO L225 Difference]: With dead ends: 9534 [2022-07-12 12:21:07,925 INFO L226 Difference]: Without dead ends: 5364 [2022-07-12 12:21:07,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4673, Invalid=5629, Unknown=0, NotChecked=0, Total=10302 [2022-07-12 12:21:07,961 INFO L413 NwaCegarLoop]: 2287 mSDtfsCounter, 3394 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 6229 mSolverCounterSat, 2466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 5527 SdHoareTripleChecker+Invalid, 8695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2466 IncrementalHoareTripleChecker+Valid, 6229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:21:07,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3619 Valid, 5527 Invalid, 8695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2466 Valid, 6229 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-12 12:21:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2022-07-12 12:21:08,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4376. [2022-07-12 12:21:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.286031746031746) internal successors, (4051), 3201 states have internal predecessors, (4051), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:21:08,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6052 transitions. [2022-07-12 12:21:08,371 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6052 transitions. Word has length 187 [2022-07-12 12:21:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:21:08,371 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6052 transitions. [2022-07-12 12:21:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 12:21:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6052 transitions. [2022-07-12 12:21:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-07-12 12:21:08,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:21:08,388 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:21:08,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 12:21:08,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:21:08,607 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:21:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:21:08,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1597963453, now seen corresponding path program 3 times [2022-07-12 12:21:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:21:08,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987672080] [2022-07-12 12:21:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:21:08,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:21:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:21:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:21:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:13,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:21:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:21:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 12:21:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-12 12:21:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:21:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:21:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 12:21:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-12 12:21:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-12 12:21:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 12:21:14,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:21:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987672080] [2022-07-12 12:21:14,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987672080] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:21:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015807215] [2022-07-12 12:21:14,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 12:21:14,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:21:14,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:21:14,097 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:21:14,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 12:21:15,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 12:21:15,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:21:15,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 12:21:15,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:21:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8845 trivial. 0 not checked. [2022-07-12 12:21:15,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:21:15,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015807215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:21:15,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:21:15,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [100] total 103 [2022-07-12 12:21:15,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464235153] [2022-07-12 12:21:15,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:21:15,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:21:15,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:21:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:21:15,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4669, Invalid=5837, Unknown=0, NotChecked=0, Total=10506 [2022-07-12 12:21:15,450 INFO L87 Difference]: Start difference. First operand 4376 states and 6052 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 12:21:17,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:21:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:21:17,789 INFO L93 Difference]: Finished difference Result 8426 states and 11724 transitions. [2022-07-12 12:21:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:21:17,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 283 [2022-07-12 12:21:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:21:17,801 INFO L225 Difference]: With dead ends: 8426 [2022-07-12 12:21:17,802 INFO L226 Difference]: Without dead ends: 4376 [2022-07-12 12:21:17,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4679, Invalid=6241, Unknown=0, NotChecked=0, Total=10920 [2022-07-12 12:21:17,815 INFO L413 NwaCegarLoop]: 2532 mSDtfsCounter, 3 mSDsluCounter, 7583 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10115 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:21:17,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10115 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 12:21:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2022-07-12 12:21:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4376. [2022-07-12 12:21:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.2857142857142858) internal successors, (4050), 3201 states have internal predecessors, (4050), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:21:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6051 transitions. [2022-07-12 12:21:18,013 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6051 transitions. Word has length 283 [2022-07-12 12:21:18,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:21:18,014 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6051 transitions. [2022-07-12 12:21:18,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 12:21:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6051 transitions. [2022-07-12 12:21:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-12 12:21:18,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:21:18,018 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:21:18,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 12:21:18,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:21:18,234 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:21:18,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:21:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1558495655, now seen corresponding path program 1 times [2022-07-12 12:21:18,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:21:18,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931658485] [2022-07-12 12:21:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:21:18,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:21:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:21:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:21:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:21:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:21:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 12:21:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-12 12:21:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:21:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:21:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 12:21:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-12 12:21:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-12 12:21:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-12 12:21:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8848 trivial. 0 not checked. [2022-07-12 12:21:18,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:21:18,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931658485] [2022-07-12 12:21:18,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931658485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:21:18,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:21:18,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 12:21:18,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490851852] [2022-07-12 12:21:18,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:21:18,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 12:21:18,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:21:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 12:21:18,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:21:18,627 INFO L87 Difference]: Start difference. First operand 4376 states and 6051 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:21:20,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:21:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:21:31,049 INFO L93 Difference]: Finished difference Result 9414 states and 13334 transitions. [2022-07-12 12:21:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 12:21:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 291 [2022-07-12 12:21:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:21:31,070 INFO L225 Difference]: With dead ends: 9414 [2022-07-12 12:21:31,071 INFO L226 Difference]: Without dead ends: 5364 [2022-07-12 12:21:31,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:21:31,084 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 3262 mSDsluCounter, 5919 mSDsCounter, 0 mSdLazyCounter, 11389 mSolverCounterSat, 2410 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3491 SdHoareTripleChecker+Valid, 8190 SdHoareTripleChecker+Invalid, 13800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2410 IncrementalHoareTripleChecker+Valid, 11389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:21:31,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3491 Valid, 8190 Invalid, 13800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2410 Valid, 11389 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-07-12 12:21:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2022-07-12 12:21:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4376. [2022-07-12 12:21:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.2853968253968253) internal successors, (4049), 3201 states have internal predecessors, (4049), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:21:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6050 transitions. [2022-07-12 12:21:31,262 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6050 transitions. Word has length 291 [2022-07-12 12:21:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:21:31,262 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6050 transitions. [2022-07-12 12:21:31,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:21:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6050 transitions. [2022-07-12 12:21:31,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-12 12:21:31,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:21:31,267 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:21:31,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 12:21:31,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:21:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:21:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1462228516, now seen corresponding path program 1 times [2022-07-12 12:21:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:21:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154210483] [2022-07-12 12:21:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:21:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:21:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:21:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:21:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:21:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:21:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 12:21:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-12 12:21:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:21:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:21:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 12:21:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-12 12:21:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 12:21:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-12 12:21:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:21:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:21:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154210483] [2022-07-12 12:21:35,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154210483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:21:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528095118] [2022-07-12 12:21:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:21:35,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:21:35,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:21:35,715 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:21:35,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 12:21:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:21:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 5505 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-12 12:21:37,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:21:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 6 proven. 8836 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 12:21:37,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:21:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:21:46,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528095118] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:21:46,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:21:46,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 97, 97] total 196 [2022-07-12 12:21:46,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988212550] [2022-07-12 12:21:46,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:21:46,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2022-07-12 12:21:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:21:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2022-07-12 12:21:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18535, Invalid=19685, Unknown=0, NotChecked=0, Total=38220 [2022-07-12 12:21:46,601 INFO L87 Difference]: Start difference. First operand 4376 states and 6050 transitions. Second operand has 196 states, 196 states have (on average 2.413265306122449) internal successors, (473), 193 states have internal predecessors, (473), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:22:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:22:03,694 INFO L93 Difference]: Finished difference Result 9726 states and 13788 transitions. [2022-07-12 12:22:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-07-12 12:22:03,695 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 2.413265306122449) internal successors, (473), 193 states have internal predecessors, (473), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 294 [2022-07-12 12:22:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:22:03,721 INFO L225 Difference]: With dead ends: 9726 [2022-07-12 12:22:03,722 INFO L226 Difference]: Without dead ends: 5556 [2022-07-12 12:22:03,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=18545, Invalid=20461, Unknown=0, NotChecked=0, Total=39006 [2022-07-12 12:22:03,750 INFO L413 NwaCegarLoop]: 2279 mSDtfsCounter, 2518 mSDsluCounter, 8946 mSDsCounter, 0 mSdLazyCounter, 17675 mSolverCounterSat, 1644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 11225 SdHoareTripleChecker+Invalid, 19319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1644 IncrementalHoareTripleChecker+Valid, 17675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:22:03,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2743 Valid, 11225 Invalid, 19319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1644 Valid, 17675 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-07-12 12:22:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2022-07-12 12:22:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 4568. [2022-07-12 12:22:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 3342 states have (on average 1.2690005984440456) internal successors, (4241), 3393 states have internal predecessors, (4241), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:22:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 6242 transitions. [2022-07-12 12:22:04,137 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 6242 transitions. Word has length 294 [2022-07-12 12:22:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:22:04,138 INFO L495 AbstractCegarLoop]: Abstraction has 4568 states and 6242 transitions. [2022-07-12 12:22:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 2.413265306122449) internal successors, (473), 193 states have internal predecessors, (473), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:22:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 6242 transitions. [2022-07-12 12:22:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-12 12:22:04,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:22:04,145 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:22:04,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 12:22:04,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 12:22:04,358 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:22:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:22:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -559129508, now seen corresponding path program 2 times [2022-07-12 12:22:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:22:04,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865953437] [2022-07-12 12:22:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:22:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:22:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:22:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:22:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:22:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:22:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-07-12 12:22:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-07-12 12:22:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:22:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:22:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-07-12 12:22:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-07-12 12:22:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-07-12 12:22:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-07-12 12:22:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 36114 backedges. 2 proven. 36100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:22:20,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:22:20,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865953437] [2022-07-12 12:22:20,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865953437] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:22:20,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472660540] [2022-07-12 12:22:20,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:22:20,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:22:20,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:22:20,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:22:20,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 12:22:22,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:22:22,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:22:22,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 6945 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-12 12:22:22,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:22:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 36114 backedges. 6 proven. 36100 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 12:22:23,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:22:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 36114 backedges. 2 proven. 36100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:22:33,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472660540] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:22:33,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:22:33,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 193, 193] total 260 [2022-07-12 12:22:33,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821884911] [2022-07-12 12:22:33,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:22:33,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2022-07-12 12:22:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:22:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2022-07-12 12:22:33,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32903, Invalid=34437, Unknown=0, NotChecked=0, Total=67340 [2022-07-12 12:22:33,516 INFO L87 Difference]: Start difference. First operand 4568 states and 6242 transitions. Second operand has 260 states, 260 states have (on average 2.3192307692307694) internal successors, (603), 257 states have internal predecessors, (603), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:22:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:22:45,991 INFO L93 Difference]: Finished difference Result 9854 states and 13884 transitions. [2022-07-12 12:22:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-07-12 12:22:45,992 INFO L78 Accepts]: Start accepts. Automaton has has 260 states, 260 states have (on average 2.3192307692307694) internal successors, (603), 257 states have internal predecessors, (603), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 486 [2022-07-12 12:22:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:22:46,004 INFO L225 Difference]: With dead ends: 9854 [2022-07-12 12:22:46,004 INFO L226 Difference]: Without dead ends: 5684 [2022-07-12 12:22:46,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1190 GetRequests, 930 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=32913, Invalid=35469, Unknown=0, NotChecked=0, Total=68382 [2022-07-12 12:22:46,012 INFO L413 NwaCegarLoop]: 2275 mSDtfsCounter, 3504 mSDsluCounter, 6853 mSDsCounter, 0 mSdLazyCounter, 13693 mSolverCounterSat, 2404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3733 SdHoareTripleChecker+Valid, 9128 SdHoareTripleChecker+Invalid, 16097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2404 IncrementalHoareTripleChecker+Valid, 13693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:22:46,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3733 Valid, 9128 Invalid, 16097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2404 Valid, 13693 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-07-12 12:22:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2022-07-12 12:22:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 4696. [2022-07-12 12:22:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 3470 states have (on average 1.2590778097982709) internal successors, (4369), 3521 states have internal predecessors, (4369), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:22:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 6370 transitions. [2022-07-12 12:22:46,284 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 6370 transitions. Word has length 486 [2022-07-12 12:22:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:22:46,285 INFO L495 AbstractCegarLoop]: Abstraction has 4696 states and 6370 transitions. [2022-07-12 12:22:46,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 260 states, 260 states have (on average 2.3192307692307694) internal successors, (603), 257 states have internal predecessors, (603), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:22:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 6370 transitions. [2022-07-12 12:22:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-07-12 12:22:46,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:22:46,297 INFO L195 NwaCegarLoop]: trace histogram [254, 254, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:22:46,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 12:22:46,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 12:22:46,523 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:22:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:22:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060132, now seen corresponding path program 3 times [2022-07-12 12:22:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:22:46,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771022372] [2022-07-12 12:22:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:22:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:22:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:22:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:22:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:22:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:22:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-07-12 12:22:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-07-12 12:22:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:22:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:22:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-07-12 12:22:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-07-12 12:22:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-07-12 12:22:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-07-12 12:22:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64528 trivial. 0 not checked. [2022-07-12 12:22:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:22:47,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771022372] [2022-07-12 12:22:47,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771022372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:22:47,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:22:47,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:22:47,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655706827] [2022-07-12 12:22:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:22:47,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:22:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:22:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:22:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:22:47,540 INFO L87 Difference]: Start difference. First operand 4696 states and 6370 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:22:49,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:22:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:22:56,739 INFO L93 Difference]: Finished difference Result 10379 states and 14343 transitions. [2022-07-12 12:22:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 12:22:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 614 [2022-07-12 12:22:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:22:56,754 INFO L225 Difference]: With dead ends: 10379 [2022-07-12 12:22:56,754 INFO L226 Difference]: Without dead ends: 5698 [2022-07-12 12:22:56,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:22:56,764 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 2272 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 6477 mSolverCounterSat, 1549 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 8027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1549 IncrementalHoareTripleChecker+Valid, 6477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:22:56,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2501 Valid, 5723 Invalid, 8027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1549 Valid, 6477 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-07-12 12:22:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2022-07-12 12:22:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 4708. [2022-07-12 12:22:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 3479 states have (on average 1.2584075883874677) internal successors, (4378), 3530 states have internal predecessors, (4378), 965 states have call successors, (965), 241 states have call predecessors, (965), 263 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:22:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 6379 transitions. [2022-07-12 12:22:56,920 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 6379 transitions. Word has length 614 [2022-07-12 12:22:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:22:56,920 INFO L495 AbstractCegarLoop]: Abstraction has 4708 states and 6379 transitions. [2022-07-12 12:22:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:22:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 6379 transitions. [2022-07-12 12:22:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-07-12 12:22:56,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:22:56,925 INFO L195 NwaCegarLoop]: trace histogram [254, 254, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:22:56,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 12:22:56,926 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:22:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:22:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1616320478, now seen corresponding path program 1 times [2022-07-12 12:22:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:22:56,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725341112] [2022-07-12 12:22:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:22:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:22:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:22:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:22:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:22:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:22:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-07-12 12:22:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-07-12 12:22:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:22:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:22:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-07-12 12:22:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-07-12 12:22:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-07-12 12:22:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-07-12 12:22:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:22:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 64526 trivial. 0 not checked. [2022-07-12 12:22:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:22:58,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725341112] [2022-07-12 12:22:58,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725341112] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:22:58,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761382696] [2022-07-12 12:22:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:22:58,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:22:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:22:58,028 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:22:58,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 12:23:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:01,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 7906 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-12 12:23:01,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:23:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 64524 trivial. 0 not checked. [2022-07-12 12:23:01,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:23:01,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761382696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:23:01,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:23:01,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 11 [2022-07-12 12:23:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917772680] [2022-07-12 12:23:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:23:01,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:23:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:23:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:23:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:23:01,647 INFO L87 Difference]: Start difference. First operand 4708 states and 6379 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 12:23:03,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:23:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:23:04,056 INFO L93 Difference]: Finished difference Result 9405 states and 12761 transitions. [2022-07-12 12:23:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:23:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 614 [2022-07-12 12:23:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:23:04,066 INFO L225 Difference]: With dead ends: 9405 [2022-07-12 12:23:04,066 INFO L226 Difference]: Without dead ends: 4716 [2022-07-12 12:23:04,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 635 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:23:04,074 INFO L413 NwaCegarLoop]: 2527 mSDtfsCounter, 38 mSDsluCounter, 15130 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17657 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:23:04,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 17657 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 12:23:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4716 states. [2022-07-12 12:23:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4716 to 4708. [2022-07-12 12:23:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 3479 states have (on average 1.258120149468238) internal successors, (4377), 3530 states have internal predecessors, (4377), 965 states have call successors, (965), 241 states have call predecessors, (965), 263 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-12 12:23:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 6378 transitions. [2022-07-12 12:23:04,212 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 6378 transitions. Word has length 614 [2022-07-12 12:23:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:23:04,212 INFO L495 AbstractCegarLoop]: Abstraction has 4708 states and 6378 transitions. [2022-07-12 12:23:04,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 12:23:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 6378 transitions. [2022-07-12 12:23:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-07-12 12:23:04,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:23:04,217 INFO L195 NwaCegarLoop]: trace histogram [254, 254, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:23:04,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 12:23:04,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:23:04,431 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:23:04,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:23:04,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1326852423, now seen corresponding path program 1 times [2022-07-12 12:23:04,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:23:04,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356677877] [2022-07-12 12:23:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:23:04,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:23:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:23:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:23:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:23:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:23:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-07-12 12:23:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-07-12 12:23:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:23:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:23:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2022-07-12 12:23:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-07-12 12:23:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-07-12 12:23:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2022-07-12 12:23:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:23:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 64530 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64526 trivial. 0 not checked. [2022-07-12 12:23:05,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:23:05,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356677877] [2022-07-12 12:23:05,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356677877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:23:05,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:23:05,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 12:23:05,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302285678] [2022-07-12 12:23:05,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:23:05,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 12:23:05,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:23:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 12:23:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:23:05,317 INFO L87 Difference]: Start difference. First operand 4708 states and 6378 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:23:10,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:23:12,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:23:14,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:23:16,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []