./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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--media--usb--ttusb-dec--ttusb_dec.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 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:39:21,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:39:21,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:39:21,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:39:21,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:39:21,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:39:21,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:39:21,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:39:21,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:39:21,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:39:21,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:39:21,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:39:21,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:39:21,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:39:21,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:39:21,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:39:21,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:39:21,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:39:21,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:39:21,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:39:21,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:39:21,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:39:21,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:39:21,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:39:21,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:39:21,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:39:21,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:39:21,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:39:21,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:39:21,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:39:21,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:39:21,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:39:21,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:39:21,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:39:21,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:39:21,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:39:21,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:39:21,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:39:21,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:39:21,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:39:21,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:39:21,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:39:21,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:39:21,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:39:21,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:39:21,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:39:21,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:39:21,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:39:21,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:39:21,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:39:21,806 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:39:21,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:39:21,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:39:21,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:39:21,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:39:21,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:39:21,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:39:21,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:39:21,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:39:21,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:39:21,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:39:21,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:39:21,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:39:21,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:39:21,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:39:21,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:39:21,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:39:21,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:39:21,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:39:21,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:39:21,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:39:21,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:39:21,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:39:21,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 [2021-12-14 17:39:21,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:39:21,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:39:21,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:39:21,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:39:21,997 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:39:21,997 INFO L432 ainManager$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--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-14 17:39:22,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e91a70e/08a517a2353842069fc1b9927e4beded/FLAG99e25e2fc [2021-12-14 17:39:22,674 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:39:22,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-14 17:39:22,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e91a70e/08a517a2353842069fc1b9927e4beded/FLAG99e25e2fc [2021-12-14 17:39:23,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e91a70e/08a517a2353842069fc1b9927e4beded [2021-12-14 17:39:23,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:39:23,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:39:23,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:39:23,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:39:23,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:39:23,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:39:23" (1/1) ... [2021-12-14 17:39:23,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4703a687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:23, skipping insertion in model container [2021-12-14 17:39:23,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:39:23" (1/1) ... [2021-12-14 17:39:23,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:39:23,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:39:24,237 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--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-14 17:39:24,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:39:24,324 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:39:24,619 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--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-14 17:39:24,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:39:24,668 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:39:24,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24 WrapperNode [2021-12-14 17:39:24,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:39:24,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:39:24,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:39:24,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:39:24,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,836 INFO L137 Inliner]: procedures = 216, calls = 1408, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 3072 [2021-12-14 17:39:24,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:39:24,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:39:24,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:39:24,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:39:24,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:24,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:25,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:39:25,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:39:25,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:39:25,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:39:25,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (1/1) ... [2021-12-14 17:39:25,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:39:25,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:39:25,052 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) [2021-12-14 17:39:25,058 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 [2021-12-14 17:39:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-14 17:39:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-14 17:39:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-14 17:39:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-14 17:39:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:39:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:39:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:39:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:39:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-14 17:39:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-14 17:39:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-14 17:39:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-14 17:39:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:39:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:39:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-14 17:39:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-14 17:39:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-14 17:39:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-14 17:39:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:39:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:39:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:39:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:39:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-14 17:39:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-14 17:39:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-14 17:39:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-14 17:39:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:39:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:39:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:39:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-14 17:39:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-14 17:39:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:39:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:39:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:39:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:39:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:39:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-14 17:39:25,089 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-14 17:39:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:39:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:39:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:39:25,089 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:39:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:39:25,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:39:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:39:25,090 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:39:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:39:25,090 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:39:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:39:25,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:39:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:39:25,091 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:39:25,091 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-14 17:39:25,091 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-14 17:39:25,091 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-14 17:39:25,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-14 17:39:25,092 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-14 17:39:25,092 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-14 17:39:25,092 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-14 17:39:25,093 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-14 17:39:25,093 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-14 17:39:25,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-14 17:39:25,093 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-14 17:39:25,093 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-14 17:39:25,093 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-14 17:39:25,093 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-14 17:39:25,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:39:25,093 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 17:39:25,094 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 17:39:25,094 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:39:25,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:39:25,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:39:25,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:25,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-14 17:39:25,095 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-14 17:39:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:39:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:39:25,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:39:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:39:25,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:39:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:39:25,095 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:39:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:39:25,096 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:39:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:39:25,096 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:39:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-14 17:39:25,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-14 17:39:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:39:25,097 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-14 17:39:25,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-14 17:39:25,097 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-14 17:39:25,097 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-14 17:39:25,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:39:25,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:39:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-14 17:39:25,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-14 17:39:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-14 17:39:25,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-14 17:39:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:39:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:39:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:39:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-14 17:39:25,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-14 17:39:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:39:25,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:39:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 17:39:25,099 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 17:39:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-14 17:39:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-14 17:39:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:39:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:39:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:39:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:39:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:39:25,523 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:39:25,525 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:39:29,711 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:39:29,730 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:39:29,731 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:39:29,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:39:29 BoogieIcfgContainer [2021-12-14 17:39:29,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:39:29,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:39:29,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:39:29,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:39:29,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:39:23" (1/3) ... [2021-12-14 17:39:29,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc1fdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:39:29, skipping insertion in model container [2021-12-14 17:39:29,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:24" (2/3) ... [2021-12-14 17:39:29,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc1fdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:39:29, skipping insertion in model container [2021-12-14 17:39:29,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:39:29" (3/3) ... [2021-12-14 17:39:29,747 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-14 17:39:29,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:39:29,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:39:29,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:39:29,802 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:39:29,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:39:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-12-14 17:39:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 17:39:29,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:29,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:29,842 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1755858725, now seen corresponding path program 1 times [2021-12-14 17:39:29,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:29,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26976984] [2021-12-14 17:39:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:29,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:39:30,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:30,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26976984] [2021-12-14 17:39:30,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26976984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:30,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:30,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:39:30,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125556578] [2021-12-14 17:39:30,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:30,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:39:30,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:39:30,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:30,260 INFO L87 Difference]: Start difference. First operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:30,511 INFO L93 Difference]: Finished difference Result 2823 states and 4045 transitions. [2021-12-14 17:39:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:39:30,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-14 17:39:30,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:30,546 INFO L225 Difference]: With dead ends: 2823 [2021-12-14 17:39:30,546 INFO L226 Difference]: Without dead ends: 1868 [2021-12-14 17:39:30,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:30,561 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 1313 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:30,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2881 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:39:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-12-14 17:39:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1863. [2021-12-14 17:39:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1368 states have (on average 1.3216374269005848) internal successors, (1808), 1399 states have internal predecessors, (1808), 397 states have call successors, (397), 99 states have call predecessors, (397), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-14 17:39:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2603 transitions. [2021-12-14 17:39:30,699 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2603 transitions. Word has length 9 [2021-12-14 17:39:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:30,699 INFO L470 AbstractCegarLoop]: Abstraction has 1863 states and 2603 transitions. [2021-12-14 17:39:30,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2603 transitions. [2021-12-14 17:39:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-14 17:39:30,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:30,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:30,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:39:30,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1403360505, now seen corresponding path program 1 times [2021-12-14 17:39:30,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:30,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488703835] [2021-12-14 17:39:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:30,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:39:30,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:30,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488703835] [2021-12-14 17:39:30,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488703835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:30,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:30,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:39:30,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069282974] [2021-12-14 17:39:30,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:30,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:39:30,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:30,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:39:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:30,788 INFO L87 Difference]: Start difference. First operand 1863 states and 2603 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:30,850 INFO L93 Difference]: Finished difference Result 1865 states and 2604 transitions. [2021-12-14 17:39:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:39:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-14 17:39:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:30,860 INFO L225 Difference]: With dead ends: 1865 [2021-12-14 17:39:30,860 INFO L226 Difference]: Without dead ends: 1862 [2021-12-14 17:39:30,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:30,863 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 1305 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:30,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1311 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:39:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-12-14 17:39:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1862. [2021-12-14 17:39:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1368 states have (on average 1.320906432748538) internal successors, (1807), 1398 states have internal predecessors, (1807), 396 states have call successors, (396), 99 states have call predecessors, (396), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-14 17:39:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2601 transitions. [2021-12-14 17:39:30,924 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2601 transitions. Word has length 10 [2021-12-14 17:39:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:30,924 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 2601 transitions. [2021-12-14 17:39:30,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2601 transitions. [2021-12-14 17:39:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-14 17:39:30,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:30,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:30,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:39:30,925 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:30,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash -554903960, now seen corresponding path program 1 times [2021-12-14 17:39:30,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:30,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623396982] [2021-12-14 17:39:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:30,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:39:31,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:31,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623396982] [2021-12-14 17:39:31,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623396982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:31,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:31,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:39:31,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642448113] [2021-12-14 17:39:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:31,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:39:31,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:39:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:31,014 INFO L87 Difference]: Start difference. First operand 1862 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:31,064 INFO L93 Difference]: Finished difference Result 1864 states and 2602 transitions. [2021-12-14 17:39:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:39:31,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-14 17:39:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:31,071 INFO L225 Difference]: With dead ends: 1864 [2021-12-14 17:39:31,072 INFO L226 Difference]: Without dead ends: 1861 [2021-12-14 17:39:31,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:31,073 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1302 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:31,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 1309 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:39:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-12-14 17:39:31,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1861. [2021-12-14 17:39:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1368 states have (on average 1.3201754385964912) internal successors, (1806), 1397 states have internal predecessors, (1806), 395 states have call successors, (395), 99 states have call predecessors, (395), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-14 17:39:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2599 transitions. [2021-12-14 17:39:31,128 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2599 transitions. Word has length 11 [2021-12-14 17:39:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:31,128 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2599 transitions. [2021-12-14 17:39:31,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2599 transitions. [2021-12-14 17:39:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 17:39:31,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:31,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:31,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:39:31,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash -22549974, now seen corresponding path program 1 times [2021-12-14 17:39:31,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:31,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401402804] [2021-12-14 17:39:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:31,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:39:31,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:31,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401402804] [2021-12-14 17:39:31,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401402804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:31,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:31,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:39:31,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439928478] [2021-12-14 17:39:31,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:31,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:39:31,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:39:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:31,184 INFO L87 Difference]: Start difference. First operand 1861 states and 2599 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:31,339 INFO L93 Difference]: Finished difference Result 5538 states and 7845 transitions. [2021-12-14 17:39:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:39:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-14 17:39:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:31,355 INFO L225 Difference]: With dead ends: 5538 [2021-12-14 17:39:31,356 INFO L226 Difference]: Without dead ends: 3675 [2021-12-14 17:39:31,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:39:31,367 INFO L933 BasicCegarLoop]: 1609 mSDtfsCounter, 1307 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:31,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 2898 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:39:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2021-12-14 17:39:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3655. [2021-12-14 17:39:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2697 states have (on average 1.32146829810901) internal successors, (3564), 2751 states have internal predecessors, (3564), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-14 17:39:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5160 transitions. [2021-12-14 17:39:31,497 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5160 transitions. Word has length 12 [2021-12-14 17:39:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:31,497 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 5160 transitions. [2021-12-14 17:39:31,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:39:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5160 transitions. [2021-12-14 17:39:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 17:39:31,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:31,504 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:31,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:39:31,505 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:31,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1548184114, now seen corresponding path program 1 times [2021-12-14 17:39:31,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:31,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214384288] [2021-12-14 17:39:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:31,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:39:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:39:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:39:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:39:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:39:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:39:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:39:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:39:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 17:39:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:39:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:39:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:39:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-14 17:39:31,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:31,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214384288] [2021-12-14 17:39:31,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214384288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:31,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:31,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:39:31,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431790625] [2021-12-14 17:39:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:31,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:39:31,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:39:31,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:39:31,805 INFO L87 Difference]: Start difference. First operand 3655 states and 5160 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:39:33,973 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 [] [2021-12-14 17:39:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:35,325 INFO L93 Difference]: Finished difference Result 7439 states and 10705 transitions. [2021-12-14 17:39:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:39:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-12-14 17:39:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:35,343 INFO L225 Difference]: With dead ends: 7439 [2021-12-14 17:39:35,344 INFO L226 Difference]: Without dead ends: 3787 [2021-12-14 17:39:35,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:35,363 INFO L933 BasicCegarLoop]: 1185 mSDtfsCounter, 1360 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 377 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:35,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1737 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-12-14 17:39:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2021-12-14 17:39:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3635. [2021-12-14 17:39:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2677 states have (on average 1.2581247665296975) internal successors, (3368), 2731 states have internal predecessors, (3368), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-14 17:39:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4964 transitions. [2021-12-14 17:39:35,507 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4964 transitions. Word has length 134 [2021-12-14 17:39:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:35,508 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 4964 transitions. [2021-12-14 17:39:35,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:39:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4964 transitions. [2021-12-14 17:39:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 17:39:35,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:35,511 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:35,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:39:35,511 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:35,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash 761767741, now seen corresponding path program 1 times [2021-12-14 17:39:35,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:35,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601168174] [2021-12-14 17:39:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:35,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:39:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:39:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:39:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:39:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:39:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:39:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:39:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:39:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:39:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:39:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:39:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 17:39:35,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:35,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601168174] [2021-12-14 17:39:35,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601168174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:35,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:35,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:39:35,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692391257] [2021-12-14 17:39:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:35,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:39:35,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:39:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:39:35,813 INFO L87 Difference]: Start difference. First operand 3635 states and 4964 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 17:39:38,262 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 [] [2021-12-14 17:39:40,272 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 [] [2021-12-14 17:39:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:43,622 INFO L93 Difference]: Finished difference Result 7642 states and 10693 transitions. [2021-12-14 17:39:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:39:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-12-14 17:39:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:43,640 INFO L225 Difference]: With dead ends: 7642 [2021-12-14 17:39:43,641 INFO L226 Difference]: Without dead ends: 4010 [2021-12-14 17:39:43,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:39:43,654 INFO L933 BasicCegarLoop]: 1185 mSDtfsCounter, 894 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 506 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 3767 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:43,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 3767 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1272 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-12-14 17:39:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-12-14 17:39:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3675. [2021-12-14 17:39:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2717 states have (on average 1.2598454177401546) internal successors, (3423), 2771 states have internal predecessors, (3423), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-14 17:39:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5019 transitions. [2021-12-14 17:39:43,813 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5019 transitions. Word has length 134 [2021-12-14 17:39:43,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:43,815 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 5019 transitions. [2021-12-14 17:39:43,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 17:39:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5019 transitions. [2021-12-14 17:39:43,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 17:39:43,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:43,821 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:43,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:39:43,822 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:43,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1103091386, now seen corresponding path program 1 times [2021-12-14 17:39:43,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:43,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041251768] [2021-12-14 17:39:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:43,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:39:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:43,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:43,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:39:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:39:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:39:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:39:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:39:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:39:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:39:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 17:39:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:39:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:39:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:39:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-14 17:39:44,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:44,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041251768] [2021-12-14 17:39:44,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041251768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:44,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:44,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:39:44,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091130709] [2021-12-14 17:39:44,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:44,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:39:44,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:44,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:39:44,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:39:44,143 INFO L87 Difference]: Start difference. First operand 3675 states and 5019 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:39:46,275 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 [] [2021-12-14 17:39:47,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:47,438 INFO L93 Difference]: Finished difference Result 7319 states and 10011 transitions. [2021-12-14 17:39:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:39:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-14 17:39:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:47,456 INFO L225 Difference]: With dead ends: 7319 [2021-12-14 17:39:47,456 INFO L226 Difference]: Without dead ends: 3647 [2021-12-14 17:39:47,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:47,469 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 1274 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:47,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1395 Valid, 1696 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-12-14 17:39:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-12-14 17:39:47,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3495. [2021-12-14 17:39:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2569 states have (on average 1.253016738030362) internal successors, (3219), 2623 states have internal predecessors, (3219), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (794), 697 states have call predecessors, (794), 722 states have call successors, (794) [2021-12-14 17:39:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4747 transitions. [2021-12-14 17:39:47,583 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4747 transitions. Word has length 134 [2021-12-14 17:39:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:47,584 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 4747 transitions. [2021-12-14 17:39:47,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:39:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4747 transitions. [2021-12-14 17:39:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 17:39:47,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:47,587 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:47,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:39:47,587 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:47,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1886976464, now seen corresponding path program 1 times [2021-12-14 17:39:47,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:47,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170561883] [2021-12-14 17:39:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:47,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:39:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:39:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:39:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:39:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:39:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:39:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:39:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:39:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:39:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:39:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:39:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:39:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 17:39:47,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:47,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170561883] [2021-12-14 17:39:47,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170561883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:47,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:47,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:39:47,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136437572] [2021-12-14 17:39:47,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:47,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:39:47,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:39:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:39:47,932 INFO L87 Difference]: Start difference. First operand 3495 states and 4747 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:39:50,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:54,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:54,695 INFO L93 Difference]: Finished difference Result 7151 states and 9762 transitions. [2021-12-14 17:39:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:39:54,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-14 17:39:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:54,712 INFO L225 Difference]: With dead ends: 7151 [2021-12-14 17:39:54,712 INFO L226 Difference]: Without dead ends: 3659 [2021-12-14 17:39:54,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:54,725 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 1321 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 355 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:54,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 4163 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 709 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-12-14 17:39:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-12-14 17:39:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3493. [2021-12-14 17:39:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2567 states have (on average 1.2516556291390728) internal successors, (3213), 2622 states have internal predecessors, (3213), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-14 17:39:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4717 transitions. [2021-12-14 17:39:54,890 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4717 transitions. Word has length 151 [2021-12-14 17:39:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:54,890 INFO L470 AbstractCegarLoop]: Abstraction has 3493 states and 4717 transitions. [2021-12-14 17:39:54,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:39:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4717 transitions. [2021-12-14 17:39:54,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 17:39:54,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:54,892 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:54,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:39:54,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:54,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash 413846126, now seen corresponding path program 1 times [2021-12-14 17:39:54,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:54,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301562284] [2021-12-14 17:39:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:54,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:39:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:39:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:39:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:39:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:39:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:39:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:39:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:39:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:39:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:39:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:39:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:39:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 17:39:55,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301562284] [2021-12-14 17:39:55,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301562284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:55,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:55,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:39:55,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991427877] [2021-12-14 17:39:55,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:55,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:39:55,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:55,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:39:55,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:39:55,152 INFO L87 Difference]: Start difference. First operand 3493 states and 4717 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:39:57,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:40:01,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:40:01,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:01,995 INFO L93 Difference]: Finished difference Result 8753 states and 12077 transitions. [2021-12-14 17:40:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:40:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-14 17:40:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:02,019 INFO L225 Difference]: With dead ends: 8753 [2021-12-14 17:40:02,019 INFO L226 Difference]: Without dead ends: 5263 [2021-12-14 17:40:02,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:40:02,033 INFO L933 BasicCegarLoop]: 1501 mSDtfsCounter, 1181 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 433 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:02,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 5534 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1070 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-12-14 17:40:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2021-12-14 17:40:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 3505. [2021-12-14 17:40:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2579 states have (on average 1.250484683986041) internal successors, (3225), 2634 states have internal predecessors, (3225), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-14 17:40:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4729 transitions. [2021-12-14 17:40:02,164 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4729 transitions. Word has length 151 [2021-12-14 17:40:02,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:02,165 INFO L470 AbstractCegarLoop]: Abstraction has 3505 states and 4729 transitions. [2021-12-14 17:40:02,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:40:02,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4729 transitions. [2021-12-14 17:40:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-14 17:40:02,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:02,168 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:02,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:40:02,168 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1898802128, now seen corresponding path program 1 times [2021-12-14 17:40:02,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:02,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480926728] [2021-12-14 17:40:02,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:02,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:40:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:40:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:40:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:40:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:40:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:40:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:40:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:40:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:40:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:40:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:40:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-14 17:40:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 17:40:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 17:40:02,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:02,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480926728] [2021-12-14 17:40:02,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480926728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:02,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:02,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:40:02,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249704567] [2021-12-14 17:40:02,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:02,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:40:02,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:40:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:40:02,422 INFO L87 Difference]: Start difference. First operand 3505 states and 4729 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 17:40:04,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:40:06,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:40:11,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:40:13,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:40:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:13,589 INFO L93 Difference]: Finished difference Result 8233 states and 11505 transitions. [2021-12-14 17:40:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:40:13,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-14 17:40:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:13,614 INFO L225 Difference]: With dead ends: 8233 [2021-12-14 17:40:13,619 INFO L226 Difference]: Without dead ends: 4731 [2021-12-14 17:40:13,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:40:13,629 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 749 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 483 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:13,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 3734 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1084 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2021-12-14 17:40:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2021-12-14 17:40:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 3509. [2021-12-14 17:40:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2583 states have (on average 1.2500967866821526) internal successors, (3229), 2638 states have internal predecessors, (3229), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-14 17:40:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4733 transitions. [2021-12-14 17:40:13,792 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4733 transitions. Word has length 160 [2021-12-14 17:40:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:13,792 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4733 transitions. [2021-12-14 17:40:13,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 17:40:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4733 transitions. [2021-12-14 17:40:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-14 17:40:13,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:13,795 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:13,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:40:13,799 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:13,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash -458669311, now seen corresponding path program 1 times [2021-12-14 17:40:13,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:13,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407026925] [2021-12-14 17:40:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:13,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:40:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:40:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:40:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:40:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:40:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:40:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:40:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:40:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:40:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:40:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:40:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-14 17:40:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:40:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 17:40:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-14 17:40:14,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:14,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407026925] [2021-12-14 17:40:14,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407026925] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:40:14,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290858419] [2021-12-14 17:40:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:14,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:14,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:40:14,056 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) [2021-12-14 17:40:14,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:40:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:14,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 17:40:14,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:40:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-14 17:40:14,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:40:14,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290858419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:14,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:40:14,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-14 17:40:14,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247727647] [2021-12-14 17:40:14,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:14,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:40:14,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:40:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:40:14,829 INFO L87 Difference]: Start difference. First operand 3509 states and 4733 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:40:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:15,221 INFO L93 Difference]: Finished difference Result 7031 states and 9503 transitions. [2021-12-14 17:40:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:40:15,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2021-12-14 17:40:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:15,236 INFO L225 Difference]: With dead ends: 7031 [2021-12-14 17:40:15,236 INFO L226 Difference]: Without dead ends: 3525 [2021-12-14 17:40:15,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:40:15,243 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:15,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2379 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:40:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-12-14 17:40:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3513. [2021-12-14 17:40:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2587 states have (on average 1.2497100889060688) internal successors, (3233), 2642 states have internal predecessors, (3233), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-14 17:40:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4737 transitions. [2021-12-14 17:40:15,338 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4737 transitions. Word has length 173 [2021-12-14 17:40:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:15,338 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4737 transitions. [2021-12-14 17:40:15,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:40:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4737 transitions. [2021-12-14 17:40:15,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-14 17:40:15,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:15,341 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:15,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:40:15,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 17:40:15,551 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1697928550, now seen corresponding path program 1 times [2021-12-14 17:40:15,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:15,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950169450] [2021-12-14 17:40:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:15,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:40:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 17:40:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:40:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 17:40:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:40:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:40:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:40:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:40:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 17:40:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 17:40:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-14 17:40:15,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:15,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950169450] [2021-12-14 17:40:15,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950169450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:40:15,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033995850] [2021-12-14 17:40:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:15,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:15,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:40:15,769 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) [2021-12-14 17:40:15,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:40:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:16,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 17:40:16,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:40:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-14 17:40:16,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:40:16,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033995850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:16,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:40:16,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 17:40:16,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929703643] [2021-12-14 17:40:16,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:16,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:40:16,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:16,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:40:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:16,545 INFO L87 Difference]: Start difference. First operand 3513 states and 4737 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 17:40:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:16,628 INFO L93 Difference]: Finished difference Result 7039 states and 9511 transitions. [2021-12-14 17:40:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:40:16,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2021-12-14 17:40:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:16,639 INFO L225 Difference]: With dead ends: 7039 [2021-12-14 17:40:16,639 INFO L226 Difference]: Without dead ends: 3529 [2021-12-14 17:40:16,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:16,648 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:16,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2380 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:40:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-12-14 17:40:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3517. [2021-12-14 17:40:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2591 states have (on average 1.2493245851022772) internal successors, (3237), 2646 states have internal predecessors, (3237), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-14 17:40:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4741 transitions. [2021-12-14 17:40:16,749 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4741 transitions. Word has length 171 [2021-12-14 17:40:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:16,749 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 4741 transitions. [2021-12-14 17:40:16,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 17:40:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4741 transitions. [2021-12-14 17:40:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 17:40:16,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:16,752 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:16,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:40:16,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-14 17:40:16,964 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1395907559, now seen corresponding path program 1 times [2021-12-14 17:40:16,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:16,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575601646] [2021-12-14 17:40:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:16,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:40:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 17:40:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:40:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 17:40:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 17:40:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:40:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 17:40:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:40:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 17:40:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:40:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:40:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 17:40:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 17:40:17,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575601646] [2021-12-14 17:40:17,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575601646] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:40:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143549655] [2021-12-14 17:40:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:17,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:17,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:40:17,250 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) [2021-12-14 17:40:17,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:40:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:17,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:40:17,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:40:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 17:40:17,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:40:17,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143549655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:17,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:40:17,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-12-14 17:40:17,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624356054] [2021-12-14 17:40:17,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:17,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:40:17,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:40:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:40:17,967 INFO L87 Difference]: Start difference. First operand 3517 states and 4741 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:40:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:18,070 INFO L93 Difference]: Finished difference Result 7058 states and 9510 transitions. [2021-12-14 17:40:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:40:18,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2021-12-14 17:40:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:18,081 INFO L225 Difference]: With dead ends: 7058 [2021-12-14 17:40:18,081 INFO L226 Difference]: Without dead ends: 3540 [2021-12-14 17:40:18,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:18,089 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 17 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:18,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3581 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:40:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2021-12-14 17:40:18,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3529. [2021-12-14 17:40:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2603 states have (on average 1.2477910103726468) internal successors, (3248), 2658 states have internal predecessors, (3248), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-14 17:40:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4752 transitions. [2021-12-14 17:40:18,182 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4752 transitions. Word has length 178 [2021-12-14 17:40:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:18,182 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4752 transitions. [2021-12-14 17:40:18,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:40:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4752 transitions. [2021-12-14 17:40:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-14 17:40:18,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:18,185 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:18,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:40:18,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:18,403 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:18,404 INFO L85 PathProgramCache]: Analyzing trace with hash 362521239, now seen corresponding path program 1 times [2021-12-14 17:40:18,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:18,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574926413] [2021-12-14 17:40:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:18,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:40:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:40:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:40:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:40:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:40:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:40:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:40:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:40:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:40:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:40:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:40:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:40:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 17:40:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-14 17:40:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-14 17:40:18,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574926413] [2021-12-14 17:40:18,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574926413] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:40:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641888421] [2021-12-14 17:40:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:18,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:18,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:40:18,680 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) [2021-12-14 17:40:18,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:40:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 17:40:19,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:40:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-14 17:40:19,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:40:19,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641888421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:19,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:40:19,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-14 17:40:19,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116421773] [2021-12-14 17:40:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:19,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:40:19,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:40:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:40:19,446 INFO L87 Difference]: Start difference. First operand 3529 states and 4752 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:40:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:19,524 INFO L93 Difference]: Finished difference Result 7063 states and 9529 transitions. [2021-12-14 17:40:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:40:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2021-12-14 17:40:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:19,533 INFO L225 Difference]: With dead ends: 7063 [2021-12-14 17:40:19,534 INFO L226 Difference]: Without dead ends: 3537 [2021-12-14 17:40:19,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:40:19,541 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 1 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:19,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2381 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:40:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-12-14 17:40:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2021-12-14 17:40:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2607 states have (on average 1.2474108170310703) internal successors, (3252), 2662 states have internal predecessors, (3252), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-14 17:40:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4756 transitions. [2021-12-14 17:40:19,662 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4756 transitions. Word has length 176 [2021-12-14 17:40:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:19,663 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4756 transitions. [2021-12-14 17:40:19,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:40:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4756 transitions. [2021-12-14 17:40:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 17:40:19,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:19,665 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:19,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:40:19,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:19,871 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2077072147, now seen corresponding path program 1 times [2021-12-14 17:40:19,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869710588] [2021-12-14 17:40:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:19,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:40:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:40:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:40:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:40:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:40:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:40:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:40:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:40:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:40:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:40:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:40:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:40:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:40:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:40:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 17:40:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 17:40:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-14 17:40:20,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:20,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869710588] [2021-12-14 17:40:20,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869710588] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:40:20,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842557557] [2021-12-14 17:40:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:20,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:20,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:40:20,112 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) [2021-12-14 17:40:20,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:40:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:20,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:40:20,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:40:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-14 17:40:20,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:40:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-14 17:40:21,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842557557] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:40:21,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:40:21,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-14 17:40:21,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478777609] [2021-12-14 17:40:21,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:40:21,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:40:21,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:40:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:21,220 INFO L87 Difference]: Start difference. First operand 3533 states and 4756 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-14 17:40:25,063 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 []