./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.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 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:23:09,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:23:09,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:23:09,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:23:09,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:23:09,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:23:09,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:23:09,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:23:09,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:23:09,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:23:09,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:23:09,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:23:09,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:23:09,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:23:09,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:23:09,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:23:09,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:23:09,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:23:09,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:23:09,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:23:09,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:23:09,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:23:09,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:23:09,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:23:09,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:23:09,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:23:09,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:23:09,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:23:09,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:23:09,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:23:09,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:23:09,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:23:09,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:23:09,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:23:09,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:23:09,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:23:09,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:23:09,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:23:09,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:23:09,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:23:09,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:23:09,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:23:09,740 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:23:09,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:23:09,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:23:09,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:23:09,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:23:09,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:23:09,746 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:23:09,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:23:09,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:23:09,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:23:09,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:23:09,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:23:09,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:23:09,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:23:09,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:23:09,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:23:09,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:23:09,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:23:09,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:23:09,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:23:09,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:23:09,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:23:09,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:23:09,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:23:09,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:23:09,750 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:23:09,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:23:09,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:23:09,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:23:09,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 [2021-11-06 15:23:09,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:23:10,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:23:10,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:23:10,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:23:10,013 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:23:10,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:23:10,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9f87038/2ab93da8839d47269bdcab158e0353f1/FLAG23403b7aa [2021-11-06 15:23:10,815 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:23:10,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:23:10,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9f87038/2ab93da8839d47269bdcab158e0353f1/FLAG23403b7aa [2021-11-06 15:23:10,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9f87038/2ab93da8839d47269bdcab158e0353f1 [2021-11-06 15:23:10,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:23:10,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:23:10,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:23:10,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:23:10,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:23:10,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:23:10" (1/1) ... [2021-11-06 15:23:10,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3b6df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:10, skipping insertion in model container [2021-11-06 15:23:10,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:23:10" (1/1) ... [2021-11-06 15:23:10,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:23:11,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:23:12,488 WARN L228 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-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-06 15:23:12,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:23:12,568 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:23:12,897 WARN L228 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-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-06 15:23:12,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:23:13,007 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:23:13,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13 WrapperNode [2021-11-06 15:23:13,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:23:13,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:23:13,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:23:13,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:23:13,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:13,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:14,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:23:14,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:23:14,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:23:14,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:23:14,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:14,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:15,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:15,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:16,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:16,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:17,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:17,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:23:17,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:23:17,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:23:17,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:23:17,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (1/1) ... [2021-11-06 15:23:17,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:23:17,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:23:17,677 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) [2021-11-06 15:23:17,700 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 [2021-11-06 15:23:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:23:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:23:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-06 15:23:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-06 15:23:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 15:23:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 15:23:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-06 15:23:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-06 15:23:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:23:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:23:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-06 15:23:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-06 15:23:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-06 15:23:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-06 15:23:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:23:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-06 15:23:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-06 15:23:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:23:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-06 15:23:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-06 15:23:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-06 15:23:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-06 15:23:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-06 15:23:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-06 15:23:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:23:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:23:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-06 15:23:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-06 15:23:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-06 15:23:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-06 15:23:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:23:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-06 15:23:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-06 15:23:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:23:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-06 15:23:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-06 15:23:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:23:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-06 15:23:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-06 15:23:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:23:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-06 15:23:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-06 15:23:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:23:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:23:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:23:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:23:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-06 15:23:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-06 15:23:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-06 15:23:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-06 15:23:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-06 15:23:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-06 15:23:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-06 15:23:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:23:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 15:23:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:23:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:23:47,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:23:47,109 INFO L299 CfgBuilder]: Removed 12774 assume(true) statements. [2021-11-06 15:23:47,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:23:47 BoogieIcfgContainer [2021-11-06 15:23:47,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:23:47,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:23:47,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:23:47,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:23:47,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:23:10" (1/3) ... [2021-11-06 15:23:47,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9deda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:23:47, skipping insertion in model container [2021-11-06 15:23:47,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:23:13" (2/3) ... [2021-11-06 15:23:47,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9deda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:23:47, skipping insertion in model container [2021-11-06 15:23:47,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:23:47" (3/3) ... [2021-11-06 15:23:47,128 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:23:47,133 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:23:47,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 15:23:47,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:23:47,213 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 [2021-11-06 15:23:47,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 15:23:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 9787 states, 9721 states have (on average 1.4642526489044336) internal successors, (14234), 9731 states have internal predecessors, (14234), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:23:47,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 15:23:47,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:23:47,373 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:23:47,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:23:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:23:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash -693416129, now seen corresponding path program 1 times [2021-11-06 15:23:47,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:23:47,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274474964] [2021-11-06 15:23:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:23:47,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:23:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:23:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:23:47,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:23:47,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274474964] [2021-11-06 15:23:47,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274474964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:23:47,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:23:47,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:23:47,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304934338] [2021-11-06 15:23:47,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:23:47,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:23:47,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:23:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:23:47,910 INFO L87 Difference]: Start difference. First operand has 9787 states, 9721 states have (on average 1.4642526489044336) internal successors, (14234), 9731 states have internal predecessors, (14234), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:23:48,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:23:48,242 INFO L93 Difference]: Finished difference Result 19570 states and 28655 transitions. [2021-11-06 15:23:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:23:48,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-06 15:23:48,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:23:48,310 INFO L225 Difference]: With dead ends: 19570 [2021-11-06 15:23:48,311 INFO L226 Difference]: Without dead ends: 9774 [2021-11-06 15:23:48,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:23:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2021-11-06 15:23:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 9774. [2021-11-06 15:23:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9774 states, 9709 states have (on average 1.4614275414563807) internal successors, (14189), 9718 states have internal predecessors, (14189), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:23:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 14269 transitions. [2021-11-06 15:23:48,705 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 14269 transitions. Word has length 47 [2021-11-06 15:23:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:23:48,706 INFO L470 AbstractCegarLoop]: Abstraction has 9774 states and 14269 transitions. [2021-11-06 15:23:48,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:23:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 14269 transitions. [2021-11-06 15:23:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 15:23:48,712 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:23:48,712 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:23:48,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:23:48,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:23:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:23:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash 60748855, now seen corresponding path program 1 times [2021-11-06 15:23:48,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:23:48,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603173052] [2021-11-06 15:23:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:23:48,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:23:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:23:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:23:49,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:23:49,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603173052] [2021-11-06 15:23:49,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603173052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:23:49,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:23:49,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:23:49,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141710699] [2021-11-06 15:23:49,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:23:49,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:23:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:23:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:23:49,256 INFO L87 Difference]: Start difference. First operand 9774 states and 14269 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:23:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:23:59,577 INFO L93 Difference]: Finished difference Result 29264 states and 42898 transitions. [2021-11-06 15:23:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:23:59,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-06 15:23:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:23:59,684 INFO L225 Difference]: With dead ends: 29264 [2021-11-06 15:23:59,685 INFO L226 Difference]: Without dead ends: 19518 [2021-11-06 15:23:59,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:23:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19518 states. [2021-11-06 15:24:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19518 to 19506. [2021-11-06 15:24:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19506 states, 19381 states have (on average 1.4283060729580517) internal successors, (27682), 19395 states have internal predecessors, (27682), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (152), 74 states have call predecessors, (152), 80 states have call successors, (152) [2021-11-06 15:24:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19506 states to 19506 states and 27914 transitions. [2021-11-06 15:24:00,493 INFO L78 Accepts]: Start accepts. Automaton has 19506 states and 27914 transitions. Word has length 47 [2021-11-06 15:24:00,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:00,496 INFO L470 AbstractCegarLoop]: Abstraction has 19506 states and 27914 transitions. [2021-11-06 15:24:00,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:00,497 INFO L276 IsEmpty]: Start isEmpty. Operand 19506 states and 27914 transitions. [2021-11-06 15:24:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 15:24:00,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:00,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:00,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:24:00,505 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1883257875, now seen corresponding path program 1 times [2021-11-06 15:24:00,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:00,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000236480] [2021-11-06 15:24:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:00,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:24:00,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:00,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000236480] [2021-11-06 15:24:00,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000236480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:00,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:00,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:24:00,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638972304] [2021-11-06 15:24:00,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:24:00,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:24:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:00,713 INFO L87 Difference]: Start difference. First operand 19506 states and 27914 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:06,952 INFO L93 Difference]: Finished difference Result 57808 states and 82833 transitions. [2021-11-06 15:24:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:24:06,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-06 15:24:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:07,100 INFO L225 Difference]: With dead ends: 57808 [2021-11-06 15:24:07,100 INFO L226 Difference]: Without dead ends: 38330 [2021-11-06 15:24:07,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38330 states. [2021-11-06 15:24:08,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38330 to 38319. [2021-11-06 15:24:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38319 states, 38074 states have (on average 1.4016651783369227) internal successors, (53367), 38098 states have internal predecessors, (53367), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:24:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38319 states to 38319 states and 53983 transitions. [2021-11-06 15:24:08,415 INFO L78 Accepts]: Start accepts. Automaton has 38319 states and 53983 transitions. Word has length 48 [2021-11-06 15:24:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:08,417 INFO L470 AbstractCegarLoop]: Abstraction has 38319 states and 53983 transitions. [2021-11-06 15:24:08,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 38319 states and 53983 transitions. [2021-11-06 15:24:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 15:24:08,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:08,422 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:08,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:24:08,422 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:08,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1748504639, now seen corresponding path program 1 times [2021-11-06 15:24:08,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:08,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348832440] [2021-11-06 15:24:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:08,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:24:08,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:08,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348832440] [2021-11-06 15:24:08,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348832440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:08,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:08,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:24:08,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359425054] [2021-11-06 15:24:08,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:24:08,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:24:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:08,599 INFO L87 Difference]: Start difference. First operand 38319 states and 53983 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:11,486 INFO L93 Difference]: Finished difference Result 38324 states and 53987 transitions. [2021-11-06 15:24:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:24:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-06 15:24:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:11,622 INFO L225 Difference]: With dead ends: 38324 [2021-11-06 15:24:11,623 INFO L226 Difference]: Without dead ends: 38322 [2021-11-06 15:24:11,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38322 states. [2021-11-06 15:24:12,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38322 to 38320. [2021-11-06 15:24:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38320 states, 38075 states have (on average 1.4016546290216678) internal successors, (53368), 38099 states have internal predecessors, (53368), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:24:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38320 states to 38320 states and 53984 transitions. [2021-11-06 15:24:12,745 INFO L78 Accepts]: Start accepts. Automaton has 38320 states and 53984 transitions. Word has length 49 [2021-11-06 15:24:12,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:12,746 INFO L470 AbstractCegarLoop]: Abstraction has 38320 states and 53984 transitions. [2021-11-06 15:24:12,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 38320 states and 53984 transitions. [2021-11-06 15:24:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 15:24:12,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:12,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:12,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:24:12,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1630974429, now seen corresponding path program 1 times [2021-11-06 15:24:12,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:12,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586932731] [2021-11-06 15:24:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:12,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:24:12,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:12,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586932731] [2021-11-06 15:24:12,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586932731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:12,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:12,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:24:12,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133233967] [2021-11-06 15:24:12,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:24:12,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:12,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:24:12,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:12,923 INFO L87 Difference]: Start difference. First operand 38320 states and 53984 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:13,773 INFO L93 Difference]: Finished difference Result 38320 states and 53984 transitions. [2021-11-06 15:24:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:24:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-06 15:24:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:13,888 INFO L225 Difference]: With dead ends: 38320 [2021-11-06 15:24:13,889 INFO L226 Difference]: Without dead ends: 38318 [2021-11-06 15:24:13,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38318 states. [2021-11-06 15:24:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38318 to 38318. [2021-11-06 15:24:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38318 states, 38074 states have (on average 1.4016389136943845) internal successors, (53366), 38097 states have internal predecessors, (53366), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:24:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38318 states to 38318 states and 53982 transitions. [2021-11-06 15:24:14,931 INFO L78 Accepts]: Start accepts. Automaton has 38318 states and 53982 transitions. Word has length 50 [2021-11-06 15:24:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:14,933 INFO L470 AbstractCegarLoop]: Abstraction has 38318 states and 53982 transitions. [2021-11-06 15:24:14,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 38318 states and 53982 transitions. [2021-11-06 15:24:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 15:24:14,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:14,940 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:14,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:24:14,940 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:14,941 INFO L85 PathProgramCache]: Analyzing trace with hash -979356853, now seen corresponding path program 1 times [2021-11-06 15:24:14,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:14,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142334975] [2021-11-06 15:24:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:14,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:24:15,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:15,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142334975] [2021-11-06 15:24:15,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142334975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:15,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:15,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:24:15,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938277392] [2021-11-06 15:24:15,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:24:15,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:15,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:24:15,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:15,103 INFO L87 Difference]: Start difference. First operand 38318 states and 53982 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:16,032 INFO L93 Difference]: Finished difference Result 38318 states and 53982 transitions. [2021-11-06 15:24:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:24:16,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 15:24:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:16,138 INFO L225 Difference]: With dead ends: 38318 [2021-11-06 15:24:16,138 INFO L226 Difference]: Without dead ends: 33281 [2021-11-06 15:24:16,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33281 states. [2021-11-06 15:24:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33281 to 33281. [2021-11-06 15:24:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33281 states, 33038 states have (on average 1.3951813063744778) internal successors, (46094), 33060 states have internal predecessors, (46094), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (456), 148 states have call predecessors, (456), 160 states have call successors, (456) [2021-11-06 15:24:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33281 states to 33281 states and 46710 transitions. [2021-11-06 15:24:17,171 INFO L78 Accepts]: Start accepts. Automaton has 33281 states and 46710 transitions. Word has length 51 [2021-11-06 15:24:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:17,172 INFO L470 AbstractCegarLoop]: Abstraction has 33281 states and 46710 transitions. [2021-11-06 15:24:17,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 33281 states and 46710 transitions. [2021-11-06 15:24:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 15:24:17,191 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:17,191 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:17,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:24:17,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2132834545, now seen corresponding path program 1 times [2021-11-06 15:24:17,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:17,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470744655] [2021-11-06 15:24:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:17,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:24:17,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:17,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470744655] [2021-11-06 15:24:17,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470744655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:17,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:17,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:24:17,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552429401] [2021-11-06 15:24:17,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:24:17,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:24:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:17,333 INFO L87 Difference]: Start difference. First operand 33281 states and 46710 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:18,790 INFO L93 Difference]: Finished difference Result 79934 states and 112565 transitions. [2021-11-06 15:24:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:24:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 15:24:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:18,961 INFO L225 Difference]: With dead ends: 79934 [2021-11-06 15:24:18,961 INFO L226 Difference]: Without dead ends: 46681 [2021-11-06 15:24:19,039 INFO L786 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 [2021-11-06 15:24:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46681 states. [2021-11-06 15:24:20,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46681 to 46663. [2021-11-06 15:24:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46663 states, 46180 states have (on average 1.3995669120831529) internal successors, (64632), 46222 states have internal predecessors, (64632), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (912), 296 states have call predecessors, (912), 320 states have call successors, (912) [2021-11-06 15:24:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46663 states to 46663 states and 65864 transitions. [2021-11-06 15:24:20,516 INFO L78 Accepts]: Start accepts. Automaton has 46663 states and 65864 transitions. Word has length 79 [2021-11-06 15:24:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:20,517 INFO L470 AbstractCegarLoop]: Abstraction has 46663 states and 65864 transitions. [2021-11-06 15:24:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 46663 states and 65864 transitions. [2021-11-06 15:24:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 15:24:20,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:20,555 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:20,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:24:20,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2068525833, now seen corresponding path program 1 times [2021-11-06 15:24:20,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:20,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297337988] [2021-11-06 15:24:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:20,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:24:20,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:20,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297337988] [2021-11-06 15:24:20,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297337988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:20,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:20,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:24:20,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168490836] [2021-11-06 15:24:20,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:24:20,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:24:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:24:20,731 INFO L87 Difference]: Start difference. First operand 46663 states and 65864 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:22,904 INFO L93 Difference]: Finished difference Result 113992 states and 160623 transitions. [2021-11-06 15:24:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:24:22,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-06 15:24:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:23,147 INFO L225 Difference]: With dead ends: 113992 [2021-11-06 15:24:23,148 INFO L226 Difference]: Without dead ends: 67357 [2021-11-06 15:24:23,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:24:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67357 states. [2021-11-06 15:24:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67357 to 46677. [2021-11-06 15:24:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46677 states, 46194 states have (on average 1.3994458154738711) internal successors, (64646), 46236 states have internal predecessors, (64646), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (912), 296 states have call predecessors, (912), 320 states have call successors, (912) [2021-11-06 15:24:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46677 states to 46677 states and 65878 transitions. [2021-11-06 15:24:25,249 INFO L78 Accepts]: Start accepts. Automaton has 46677 states and 65878 transitions. Word has length 105 [2021-11-06 15:24:25,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:25,249 INFO L470 AbstractCegarLoop]: Abstraction has 46677 states and 65878 transitions. [2021-11-06 15:24:25,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:25,249 INFO L276 IsEmpty]: Start isEmpty. Operand 46677 states and 65878 transitions. [2021-11-06 15:24:25,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 15:24:25,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:25,280 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:25,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:24:25,280 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:25,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1959600286, now seen corresponding path program 1 times [2021-11-06 15:24:25,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:25,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835034983] [2021-11-06 15:24:25,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:25,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:24:25,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:25,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835034983] [2021-11-06 15:24:25,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835034983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:25,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:25,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:24:25,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31654939] [2021-11-06 15:24:25,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:24:25,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:24:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:25,500 INFO L87 Difference]: Start difference. First operand 46677 states and 65878 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:29,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:29,148 INFO L93 Difference]: Finished difference Result 107278 states and 152108 transitions. [2021-11-06 15:24:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:24:29,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-06 15:24:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:29,358 INFO L225 Difference]: With dead ends: 107278 [2021-11-06 15:24:29,359 INFO L226 Difference]: Without dead ends: 60629 [2021-11-06 15:24:29,465 INFO L786 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 [2021-11-06 15:24:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60629 states. [2021-11-06 15:24:31,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60629 to 60629. [2021-11-06 15:24:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60629 states, 59666 states have (on average 1.4041497670365033) internal successors, (83780), 59748 states have internal predecessors, (83780), 640 states have call successors, (640), 320 states have call predecessors, (640), 320 states have return successors, (1824), 592 states have call predecessors, (1824), 640 states have call successors, (1824) [2021-11-06 15:24:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60629 states to 60629 states and 86244 transitions. [2021-11-06 15:24:31,509 INFO L78 Accepts]: Start accepts. Automaton has 60629 states and 86244 transitions. Word has length 109 [2021-11-06 15:24:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:31,509 INFO L470 AbstractCegarLoop]: Abstraction has 60629 states and 86244 transitions. [2021-11-06 15:24:31,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 60629 states and 86244 transitions. [2021-11-06 15:24:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 15:24:31,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:31,579 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:24:31,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:24:31,579 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 198181199, now seen corresponding path program 1 times [2021-11-06 15:24:31,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:31,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485058757] [2021-11-06 15:24:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:31,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:24:31,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:31,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485058757] [2021-11-06 15:24:31,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485058757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:31,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:31,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:24:31,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310373490] [2021-11-06 15:24:31,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:24:31,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:24:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:24:31,723 INFO L87 Difference]: Start difference. First operand 60629 states and 86244 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:24:35,321 INFO L93 Difference]: Finished difference Result 101727 states and 144146 transitions. [2021-11-06 15:24:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:24:35,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 15:24:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:24:35,426 INFO L225 Difference]: With dead ends: 101727 [2021-11-06 15:24:35,426 INFO L226 Difference]: Without dead ends: 41124 [2021-11-06 15:24:35,514 INFO L786 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 [2021-11-06 15:24:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41124 states. [2021-11-06 15:24:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41124 to 41118. [2021-11-06 15:24:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41118 states, 40515 states have (on average 1.3934838948537578) internal successors, (56457), 40567 states have internal predecessors, (56457), 400 states have call successors, (400), 200 states have call predecessors, (400), 200 states have return successors, (1064), 370 states have call predecessors, (1064), 400 states have call successors, (1064) [2021-11-06 15:24:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41118 states to 41118 states and 57921 transitions. [2021-11-06 15:24:36,629 INFO L78 Accepts]: Start accepts. Automaton has 41118 states and 57921 transitions. Word has length 124 [2021-11-06 15:24:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:24:36,629 INFO L470 AbstractCegarLoop]: Abstraction has 41118 states and 57921 transitions. [2021-11-06 15:24:36,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:24:36,630 INFO L276 IsEmpty]: Start isEmpty. Operand 41118 states and 57921 transitions. [2021-11-06 15:24:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 15:24:36,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:24:36,680 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:24:36,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:24:36,681 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:24:36,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:24:36,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1019380039, now seen corresponding path program 1 times [2021-11-06 15:24:36,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:24:36,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752621357] [2021-11-06 15:24:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:24:36,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:24:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-06 15:24:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:36,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 15:24:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-06 15:24:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-06 15:24:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:24:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:24:37,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:24:37,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752621357] [2021-11-06 15:24:37,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752621357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:24:37,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:24:37,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:24:37,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012175686] [2021-11-06 15:24:37,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:24:37,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:24:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:24:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:24:37,004 INFO L87 Difference]: Start difference. First operand 41118 states and 57921 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:25:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:25:16,278 INFO L93 Difference]: Finished difference Result 82804 states and 116533 transitions. [2021-11-06 15:25:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:25:16,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 131 [2021-11-06 15:25:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:25:16,411 INFO L225 Difference]: With dead ends: 82804 [2021-11-06 15:25:16,412 INFO L226 Difference]: Without dead ends: 41714 [2021-11-06 15:25:16,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:25:16,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41714 states. [2021-11-06 15:25:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41714 to 41376. [2021-11-06 15:25:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41376 states, 40689 states have (on average 1.3918012239180122) internal successors, (56631), 40778 states have internal predecessors, (56631), 390 states have call successors, (390), 200 states have call predecessors, (390), 294 states have return successors, (1187), 427 states have call predecessors, (1187), 390 states have call successors, (1187) [2021-11-06 15:25:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41376 states to 41376 states and 58208 transitions. [2021-11-06 15:25:17,922 INFO L78 Accepts]: Start accepts. Automaton has 41376 states and 58208 transitions. Word has length 131 [2021-11-06 15:25:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:25:17,922 INFO L470 AbstractCegarLoop]: Abstraction has 41376 states and 58208 transitions. [2021-11-06 15:25:17,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 15:25:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 41376 states and 58208 transitions. [2021-11-06 15:25:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 15:25:17,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:25:17,982 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:25:17,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 15:25:17,982 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:25:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:25:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1209558456, now seen corresponding path program 1 times [2021-11-06 15:25:17,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:25:17,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632003813] [2021-11-06 15:25:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:25:17,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:25:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-06 15:25:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-06 15:25:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-06 15:25:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-06 15:25:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:25:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:25:18,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:25:18,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632003813] [2021-11-06 15:25:18,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632003813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:25:18,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:25:18,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:25:18,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808904307] [2021-11-06 15:25:18,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:25:18,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:25:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:25:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:25:18,268 INFO L87 Difference]: Start difference. First operand 41376 states and 58208 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)