./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-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 5b36d44f 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_1a-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 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:54:29,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:54:29,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:54:29,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:54:29,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:54:29,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:54:29,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:54:29,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:54:29,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:54:29,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:54:29,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:54:29,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:54:29,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:54:29,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:54:29,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:54:29,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:54:29,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:54:29,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:54:29,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:54:29,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:54:29,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:54:29,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:54:29,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:54:29,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:54:29,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:54:29,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:54:29,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:54:29,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:54:29,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:54:29,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:54:29,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:54:29,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:54:29,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:54:29,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:54:29,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:54:29,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:54:29,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:54:29,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:54:29,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:54:29,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:54:29,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:54:29,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:54:29,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:54:29,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:54:29,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:54:29,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:54:29,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:54:29,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:54:29,753 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:54:29,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:54:29,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:54:29,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:54:29,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:54:29,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:54:29,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:54:29,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:54:29,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:54:29,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:54:29,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:54:29,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:54:29,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:54:29,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:54:29,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:54:29,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:54:29,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:54:29,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:54:29,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:54:29,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:54:29,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:54:29,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:54:29,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:54:29,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2021-11-07 13:54:29,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:54:29,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:54:29,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:54:29,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:54:29,990 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:54:29,992 INFO L432 ainManager$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_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:54:30,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919a80a9c/d47d3abcd4ee4fca80fc6c9aa9c87fd6/FLAG21a6b22fa [2021-11-07 13:54:30,674 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:54:30,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:54:30,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919a80a9c/d47d3abcd4ee4fca80fc6c9aa9c87fd6/FLAG21a6b22fa [2021-11-07 13:54:31,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919a80a9c/d47d3abcd4ee4fca80fc6c9aa9c87fd6 [2021-11-07 13:54:31,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:54:31,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:54:31,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:54:31,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:54:31,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:54:31,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:31" (1/1) ... [2021-11-07 13:54:31,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f63e39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:31, skipping insertion in model container [2021-11-07 13:54:31,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:31" (1/1) ... [2021-11-07 13:54:31,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:54:31,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:54:32,271 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_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-07 13:54:32,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:54:32,334 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:54:32,601 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_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-07 13:54:32,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:54:32,710 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:54:32,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32 WrapperNode [2021-11-07 13:54:32,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:54:32,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:54:32,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:54:32,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:54:32,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:32,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:34,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:54:34,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:54:34,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:54:34,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:54:34,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:34,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:34,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:34,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:35,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:35,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:35,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:36,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:54:36,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:54:36,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:54:36,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:54:36,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (1/1) ... [2021-11-07 13:54:36,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:54:36,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:54:36,529 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) [2021-11-07 13:54:36,571 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 [2021-11-07 13:54:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:54:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:54:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-07 13:54:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-07 13:54:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 13:54:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 13:54:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-07 13:54:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-07 13:54:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-07 13:54:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-07 13:54:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-07 13:54:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-07 13:54:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-07 13:54:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-07 13:54:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:54:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-07 13:54:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-07 13:54:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:54:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-07 13:54:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-07 13:54:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-07 13:54:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-07 13:54:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-07 13:54:36,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-07 13:54:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:54:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:54:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-07 13:54:36,620 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-07 13:54:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-07 13:54:36,620 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-07 13:54:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:54:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-07 13:54:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-07 13:54:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:54:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-07 13:54:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-07 13:54:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:54:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-07 13:54:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-07 13:54:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:54:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-07 13:54:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-07 13:54:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:54:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:54:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:54:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:54:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-07 13:54:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-07 13:54:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-07 13:54:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-07 13:54:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-07 13:54:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-07 13:54:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-07 13:54:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:54:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 13:54:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:54:36,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:55:01,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:55:01,270 INFO L299 CfgBuilder]: Removed 14764 assume(true) statements. [2021-11-07 13:55:01,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:55:01 BoogieIcfgContainer [2021-11-07 13:55:01,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:55:01,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:55:01,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:55:01,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:55:01,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:54:31" (1/3) ... [2021-11-07 13:55:01,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41be513e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:55:01, skipping insertion in model container [2021-11-07 13:55:01,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:32" (2/3) ... [2021-11-07 13:55:01,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41be513e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:55:01, skipping insertion in model container [2021-11-07 13:55:01,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:55:01" (3/3) ... [2021-11-07 13:55:01,292 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:55:01,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:55:01,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 13:55:01,375 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:55:01,381 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 [2021-11-07 13:55:01,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 13:55:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 11120 states, 11055 states have (on average 1.4388964269561284) internal successors, (15907), 11066 states have internal predecessors, (15907), 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) [2021-11-07 13:55:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 13:55:01,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:01,550 INFO L514 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] [2021-11-07 13:55:01,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash -490614643, now seen corresponding path program 1 times [2021-11-07 13:55:01,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:01,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356640949] [2021-11-07 13:55:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:01,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:01,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:01,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356640949] [2021-11-07 13:55:01,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356640949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:01,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:01,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:55:01,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401718760] [2021-11-07 13:55:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:01,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 13:55:01,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 13:55:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:55:02,036 INFO L87 Difference]: Start difference. First operand has 11120 states, 11055 states have (on average 1.4388964269561284) internal successors, (15907), 11066 states have internal predecessors, (15907), 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) [2021-11-07 13:55:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:02,434 INFO L93 Difference]: Finished difference Result 22236 states and 32001 transitions. [2021-11-07 13:55:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 13:55:02,437 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 [2021-11-07 13:55:02,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:02,499 INFO L225 Difference]: With dead ends: 22236 [2021-11-07 13:55:02,500 INFO L226 Difference]: Without dead ends: 11103 [2021-11-07 13:55:02,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:55:02,544 INFO L933 BasicCegarLoop]: 15960 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15960 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:02,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15960 Invalid, 0 Unknown, 0 Unchecked, 40.35ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 13:55:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-11-07 13:55:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 11103. [2021-11-07 13:55:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11103 states, 11039 states have (on average 1.4358184618171936) internal successors, (15850), 11049 states have internal predecessors, (15850), 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) [2021-11-07 13:55:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11103 states to 11103 states and 15930 transitions. [2021-11-07 13:55:02,928 INFO L78 Accepts]: Start accepts. Automaton has 11103 states and 15930 transitions. Word has length 47 [2021-11-07 13:55:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:02,928 INFO L470 AbstractCegarLoop]: Abstraction has 11103 states and 15930 transitions. [2021-11-07 13:55:02,929 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) [2021-11-07 13:55:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 11103 states and 15930 transitions. [2021-11-07 13:55:02,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 13:55:02,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:02,932 INFO L514 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] [2021-11-07 13:55:02,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:55:02,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1635357639, now seen corresponding path program 1 times [2021-11-07 13:55:02,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:02,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434802014] [2021-11-07 13:55:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:02,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:03,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:03,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434802014] [2021-11-07 13:55:03,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434802014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:03,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:03,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:55:03,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151488167] [2021-11-07 13:55:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:03,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:55:03,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:03,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:55:03,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:03,167 INFO L87 Difference]: Start difference. First operand 11103 states and 15930 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) [2021-11-07 13:55:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:07,101 INFO L93 Difference]: Finished difference Result 33242 states and 47793 transitions. [2021-11-07 13:55:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:55:07,102 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 [2021-11-07 13:55:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:07,220 INFO L225 Difference]: With dead ends: 33242 [2021-11-07 13:55:07,220 INFO L226 Difference]: Without dead ends: 22167 [2021-11-07 13:55:07,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:07,256 INFO L933 BasicCegarLoop]: 15562 mSDtfsCounter, 15222 mSDsluCounter, 14603 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2340.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15222 SdHoareTripleChecker+Valid, 30165 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.39ms SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2882.75ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:07,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15222 Valid, 30165 Invalid, 2642 Unknown, 0 Unchecked, 69.39ms Time], IncrementalHoareTripleChecker [659 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 2882.75ms Time] [2021-11-07 13:55:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22167 states. [2021-11-07 13:55:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22167 to 22167. [2021-11-07 13:55:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22167 states, 22043 states have (on average 1.4064328811867712) internal successors, (31002), 22060 states have internal predecessors, (31002), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (112), 74 states have call predecessors, (112), 80 states have call successors, (112) [2021-11-07 13:55:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22167 states to 22167 states and 31194 transitions. [2021-11-07 13:55:07,786 INFO L78 Accepts]: Start accepts. Automaton has 22167 states and 31194 transitions. Word has length 47 [2021-11-07 13:55:07,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:07,787 INFO L470 AbstractCegarLoop]: Abstraction has 22167 states and 31194 transitions. [2021-11-07 13:55:07,787 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) [2021-11-07 13:55:07,787 INFO L276 IsEmpty]: Start isEmpty. Operand 22167 states and 31194 transitions. [2021-11-07 13:55:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 13:55:07,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:07,792 INFO L514 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] [2021-11-07 13:55:07,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:55:07,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:07,794 INFO L85 PathProgramCache]: Analyzing trace with hash -843473344, now seen corresponding path program 1 times [2021-11-07 13:55:07,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:07,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959677399] [2021-11-07 13:55:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:07,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:07,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:07,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959677399] [2021-11-07 13:55:07,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959677399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:07,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:07,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:55:07,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911999222] [2021-11-07 13:55:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:07,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:55:07,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:55:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:07,937 INFO L87 Difference]: Start difference. First operand 22167 states and 31194 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) [2021-11-07 13:55:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:10,080 INFO L93 Difference]: Finished difference Result 66127 states and 93206 transitions. [2021-11-07 13:55:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:55:10,081 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 [2021-11-07 13:55:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:10,214 INFO L225 Difference]: With dead ends: 66127 [2021-11-07 13:55:10,214 INFO L226 Difference]: Without dead ends: 43988 [2021-11-07 13:55:10,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:10,293 INFO L933 BasicCegarLoop]: 16281 mSDtfsCounter, 15344 mSDsluCounter, 15242 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 884.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15344 SdHoareTripleChecker+Valid, 31523 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 174.27ms SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1235.33ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:10,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15344 Valid, 31523 Invalid, 1305 Unknown, 0 Unchecked, 174.27ms Time], IncrementalHoareTripleChecker [326 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1235.33ms Time] [2021-11-07 13:55:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43988 states. [2021-11-07 13:55:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43988 to 43970. [2021-11-07 13:55:11,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43970 states, 43726 states have (on average 1.392169418652518) internal successors, (60874), 43757 states have internal predecessors, (60874), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 13:55:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43970 states to 43970 states and 61258 transitions. [2021-11-07 13:55:11,330 INFO L78 Accepts]: Start accepts. Automaton has 43970 states and 61258 transitions. Word has length 48 [2021-11-07 13:55:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:11,330 INFO L470 AbstractCegarLoop]: Abstraction has 43970 states and 61258 transitions. [2021-11-07 13:55:11,331 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) [2021-11-07 13:55:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 43970 states and 61258 transitions. [2021-11-07 13:55:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 13:55:11,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:11,334 INFO L514 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] [2021-11-07 13:55:11,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:55:11,334 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:11,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash -377822479, now seen corresponding path program 1 times [2021-11-07 13:55:11,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:11,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913599380] [2021-11-07 13:55:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:11,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:11,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:11,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913599380] [2021-11-07 13:55:11,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913599380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:11,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:11,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:55:11,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21415032] [2021-11-07 13:55:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:11,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:55:11,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:11,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:55:11,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:11,470 INFO L87 Difference]: Start difference. First operand 43970 states and 61258 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) [2021-11-07 13:55:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:12,104 INFO L93 Difference]: Finished difference Result 43970 states and 61258 transitions. [2021-11-07 13:55:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:55:12,105 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 [2021-11-07 13:55:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:12,211 INFO L225 Difference]: With dead ends: 43970 [2021-11-07 13:55:12,211 INFO L226 Difference]: Without dead ends: 43968 [2021-11-07 13:55:12,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:12,229 INFO L933 BasicCegarLoop]: 15927 mSDtfsCounter, 15881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15881 SdHoareTripleChecker+Valid, 15927 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.18ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:12,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15881 Valid, 15927 Invalid, 1 Unknown, 0 Unchecked, 15.29ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.18ms Time] [2021-11-07 13:55:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43968 states. [2021-11-07 13:55:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43968 to 43968. [2021-11-07 13:55:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43968 states, 43725 states have (on average 1.3921555174385363) internal successors, (60872), 43755 states have internal predecessors, (60872), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 13:55:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43968 states to 43968 states and 61256 transitions. [2021-11-07 13:55:13,149 INFO L78 Accepts]: Start accepts. Automaton has 43968 states and 61256 transitions. Word has length 49 [2021-11-07 13:55:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:13,151 INFO L470 AbstractCegarLoop]: Abstraction has 43968 states and 61256 transitions. [2021-11-07 13:55:13,151 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) [2021-11-07 13:55:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 43968 states and 61256 transitions. [2021-11-07 13:55:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 13:55:13,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:13,156 INFO L514 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] [2021-11-07 13:55:13,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:55:13,157 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:13,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1172452458, now seen corresponding path program 1 times [2021-11-07 13:55:13,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:13,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774200594] [2021-11-07 13:55:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:13,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:13,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:13,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774200594] [2021-11-07 13:55:13,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774200594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:13,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:13,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:55:13,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541032023] [2021-11-07 13:55:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:13,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:55:13,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:55:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:13,398 INFO L87 Difference]: Start difference. First operand 43968 states and 61256 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) [2021-11-07 13:55:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:14,019 INFO L93 Difference]: Finished difference Result 43968 states and 61256 transitions. [2021-11-07 13:55:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:55:14,019 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 [2021-11-07 13:55:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:14,123 INFO L225 Difference]: With dead ends: 43968 [2021-11-07 13:55:14,123 INFO L226 Difference]: Without dead ends: 37972 [2021-11-07 13:55:14,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:14,150 INFO L933 BasicCegarLoop]: 15926 mSDtfsCounter, 15878 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15878 SdHoareTripleChecker+Valid, 15926 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:14,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15878 Valid, 15926 Invalid, 0 Unknown, 0 Unchecked, 19.86ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 13:55:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37972 states. [2021-11-07 13:55:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37972 to 37972. [2021-11-07 13:55:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37972 states, 37730 states have (on average 1.4002915451895044) internal successors, (52833), 37759 states have internal predecessors, (52833), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 13:55:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37972 states to 37972 states and 53217 transitions. [2021-11-07 13:55:15,072 INFO L78 Accepts]: Start accepts. Automaton has 37972 states and 53217 transitions. Word has length 50 [2021-11-07 13:55:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:15,073 INFO L470 AbstractCegarLoop]: Abstraction has 37972 states and 53217 transitions. [2021-11-07 13:55:15,073 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) [2021-11-07 13:55:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 37972 states and 53217 transitions. [2021-11-07 13:55:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 13:55:15,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:15,088 INFO L514 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] [2021-11-07 13:55:15,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:55:15,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash 861531681, now seen corresponding path program 1 times [2021-11-07 13:55:15,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:15,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320662614] [2021-11-07 13:55:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:15,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:15,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:15,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320662614] [2021-11-07 13:55:15,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320662614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:15,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:15,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:55:15,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810999840] [2021-11-07 13:55:15,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:15,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:55:15,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:55:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:15,212 INFO L87 Difference]: Start difference. First operand 37972 states and 53217 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-07 13:55:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:16,546 INFO L93 Difference]: Finished difference Result 91243 states and 127894 transitions. [2021-11-07 13:55:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:55:16,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-07 13:55:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:16,725 INFO L225 Difference]: With dead ends: 91243 [2021-11-07 13:55:16,726 INFO L226 Difference]: Without dead ends: 53299 [2021-11-07 13:55:16,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:16,804 INFO L933 BasicCegarLoop]: 16254 mSDtfsCounter, 14137 mSDsluCounter, 7267 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14137 SdHoareTripleChecker+Valid, 23521 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.37ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.67ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:16,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14137 Valid, 23521 Invalid, 24 Unknown, 0 Unchecked, 26.37ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 58.67ms Time] [2021-11-07 13:55:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53299 states. [2021-11-07 13:55:17,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53299 to 53284. [2021-11-07 13:55:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53284 states, 52802 states have (on average 1.3999659103821824) internal successors, (73921), 52859 states have internal predecessors, (73921), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-07 13:55:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53284 states to 53284 states and 74689 transitions. [2021-11-07 13:55:18,254 INFO L78 Accepts]: Start accepts. Automaton has 53284 states and 74689 transitions. Word has length 73 [2021-11-07 13:55:18,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:18,254 INFO L470 AbstractCegarLoop]: Abstraction has 53284 states and 74689 transitions. [2021-11-07 13:55:18,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-07 13:55:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 53284 states and 74689 transitions. [2021-11-07 13:55:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 13:55:18,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:18,283 INFO L514 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] [2021-11-07 13:55:18,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:55:18,283 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash -901970140, now seen corresponding path program 1 times [2021-11-07 13:55:18,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:18,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091846281] [2021-11-07 13:55:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:18,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:55:18,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:18,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091846281] [2021-11-07 13:55:18,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091846281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:18,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:18,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:55:18,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223792771] [2021-11-07 13:55:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:18,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:55:18,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:55:18,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:55:18,427 INFO L87 Difference]: Start difference. First operand 53284 states and 74689 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-07 13:55:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:20,404 INFO L93 Difference]: Finished difference Result 129992 states and 182353 transitions. [2021-11-07 13:55:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:55:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 99 [2021-11-07 13:55:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:20,631 INFO L225 Difference]: With dead ends: 129992 [2021-11-07 13:55:20,632 INFO L226 Difference]: Without dead ends: 76736 [2021-11-07 13:55:20,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:55:20,743 INFO L933 BasicCegarLoop]: 16746 mSDtfsCounter, 34730 mSDsluCounter, 15939 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34730 SdHoareTripleChecker+Valid, 32685 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.50ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.87ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:20,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34730 Valid, 32685 Invalid, 35 Unknown, 0 Unchecked, 53.50ms Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 74.87ms Time] [2021-11-07 13:55:20,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76736 states. [2021-11-07 13:55:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76736 to 53298. [2021-11-07 13:55:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53298 states, 52816 states have (on average 1.3998598909421387) internal successors, (73935), 52873 states have internal predecessors, (73935), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-07 13:55:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53298 states to 53298 states and 74703 transitions. [2021-11-07 13:55:22,421 INFO L78 Accepts]: Start accepts. Automaton has 53298 states and 74703 transitions. Word has length 99 [2021-11-07 13:55:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:22,422 INFO L470 AbstractCegarLoop]: Abstraction has 53298 states and 74703 transitions. [2021-11-07 13:55:22,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-07 13:55:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 53298 states and 74703 transitions. [2021-11-07 13:55:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 13:55:22,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:22,453 INFO L514 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] [2021-11-07 13:55:22,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:55:22,454 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1847690109, now seen corresponding path program 1 times [2021-11-07 13:55:22,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:22,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935750711] [2021-11-07 13:55:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:22,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:55:22,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:22,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935750711] [2021-11-07 13:55:22,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935750711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:22,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:22,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:55:22,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874655841] [2021-11-07 13:55:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:22,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:55:22,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:22,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:55:22,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:22,602 INFO L87 Difference]: Start difference. First operand 53298 states and 74703 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-07 13:55:24,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:55:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:26,413 INFO L93 Difference]: Finished difference Result 121768 states and 170906 transitions. [2021-11-07 13:55:26,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:55:26,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 103 [2021-11-07 13:55:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:26,632 INFO L225 Difference]: With dead ends: 121768 [2021-11-07 13:55:26,632 INFO L226 Difference]: Without dead ends: 68498 [2021-11-07 13:55:26,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:26,743 INFO L933 BasicCegarLoop]: 18447 mSDtfsCounter, 11523 mSDsluCounter, 7304 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2035.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11523 SdHoareTripleChecker+Valid, 25751 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2157.62ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:26,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11523 Valid, 25751 Invalid, 15 Unknown, 0 Unchecked, 21.73ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2157.62ms Time] [2021-11-07 13:55:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68498 states. [2021-11-07 13:55:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68498 to 68498. [2021-11-07 13:55:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68498 states, 67536 states have (on average 1.4019337834636343) internal successors, (94681), 67649 states have internal predecessors, (94681), 640 states have call successors, (640), 320 states have call predecessors, (640), 320 states have return successors, (896), 592 states have call predecessors, (896), 640 states have call successors, (896) [2021-11-07 13:55:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68498 states to 68498 states and 96217 transitions. [2021-11-07 13:55:28,660 INFO L78 Accepts]: Start accepts. Automaton has 68498 states and 96217 transitions. Word has length 103 [2021-11-07 13:55:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:28,660 INFO L470 AbstractCegarLoop]: Abstraction has 68498 states and 96217 transitions. [2021-11-07 13:55:28,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-07 13:55:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 68498 states and 96217 transitions. [2021-11-07 13:55:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 13:55:28,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:28,720 INFO L514 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] [2021-11-07 13:55:28,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:55:28,720 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash 808525327, now seen corresponding path program 1 times [2021-11-07 13:55:28,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:28,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712368635] [2021-11-07 13:55:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:28,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:55:28,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:28,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712368635] [2021-11-07 13:55:28,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712368635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:28,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:28,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:55:28,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675107090] [2021-11-07 13:55:28,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:28,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:55:28,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:55:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:28,843 INFO L87 Difference]: Start difference. First operand 68498 states and 96217 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-07 13:55:30,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:55:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:32,578 INFO L93 Difference]: Finished difference Result 115361 states and 161881 transitions. [2021-11-07 13:55:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:55:32,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 118 [2021-11-07 13:55:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:32,694 INFO L225 Difference]: With dead ends: 115361 [2021-11-07 13:55:32,694 INFO L226 Difference]: Without dead ends: 46889 [2021-11-07 13:55:32,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:55:32,793 INFO L933 BasicCegarLoop]: 15827 mSDtfsCounter, 3 mSDsluCounter, 15822 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2023.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31649 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2164.96ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:32,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 31649 Invalid, 5 Unknown, 0 Unchecked, 16.70ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2164.96ms Time] [2021-11-07 13:55:32,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46889 states. [2021-11-07 13:55:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46889 to 46883. [2021-11-07 13:55:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46883 states, 46281 states have (on average 1.3984788574144897) internal successors, (64723), 46352 states have internal predecessors, (64723), 400 states have call successors, (400), 200 states have call predecessors, (400), 200 states have return successors, (560), 370 states have call predecessors, (560), 400 states have call successors, (560) [2021-11-07 13:55:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46883 states to 46883 states and 65683 transitions. [2021-11-07 13:55:33,909 INFO L78 Accepts]: Start accepts. Automaton has 46883 states and 65683 transitions. Word has length 118 [2021-11-07 13:55:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:33,909 INFO L470 AbstractCegarLoop]: Abstraction has 46883 states and 65683 transitions. [2021-11-07 13:55:33,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-07 13:55:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 46883 states and 65683 transitions. [2021-11-07 13:55:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 13:55:33,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:33,952 INFO L514 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, 1, 1] [2021-11-07 13:55:33,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 13:55:33,952 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1231452078, now seen corresponding path program 1 times [2021-11-07 13:55:33,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:33,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965547810] [2021-11-07 13:55:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:33,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-07 13:55:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-07 13:55:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-07 13:55:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 13:55:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:34,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:34,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965547810] [2021-11-07 13:55:34,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965547810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:34,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:34,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:55:34,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795728599] [2021-11-07 13:55:34,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:34,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:55:34,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:34,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:55:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:55:34,309 INFO L87 Difference]: Start difference. First operand 46883 states and 65683 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 13:55:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:55:51,819 INFO L93 Difference]: Finished difference Result 94568 states and 132891 transitions. [2021-11-07 13:55:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:55:51,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 135 [2021-11-07 13:55:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:55:51,933 INFO L225 Difference]: With dead ends: 94568 [2021-11-07 13:55:51,933 INFO L226 Difference]: Without dead ends: 47713 [2021-11-07 13:55:52,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.93ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:55:52,139 INFO L933 BasicCegarLoop]: 15686 mSDtfsCounter, 407 mSDsluCounter, 39538 mSDsCounter, 0 mSdLazyCounter, 7784 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14029.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 55224 SdHoareTripleChecker+Invalid, 7836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.32ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 7784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16075.52ms IncrementalHoareTripleChecker+Time [2021-11-07 13:55:52,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 55224 Invalid, 7836 Unknown, 0 Unchecked, 88.32ms Time], IncrementalHoareTripleChecker [52 Valid, 7784 Invalid, 0 Unknown, 0 Unchecked, 16075.52ms Time] [2021-11-07 13:55:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47713 states. [2021-11-07 13:55:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47713 to 47043. [2021-11-07 13:55:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47043 states, 46396 states have (on average 1.3975989309423227) internal successors, (64843), 46482 states have internal predecessors, (64843), 405 states have call successors, (405), 200 states have call predecessors, (405), 240 states have return successors, (635), 410 states have call predecessors, (635), 405 states have call successors, (635) [2021-11-07 13:55:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47043 states to 47043 states and 65883 transitions. [2021-11-07 13:55:53,241 INFO L78 Accepts]: Start accepts. Automaton has 47043 states and 65883 transitions. Word has length 135 [2021-11-07 13:55:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:55:53,242 INFO L470 AbstractCegarLoop]: Abstraction has 47043 states and 65883 transitions. [2021-11-07 13:55:53,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 13:55:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 47043 states and 65883 transitions. [2021-11-07 13:55:53,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 13:55:53,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:55:53,283 INFO L514 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] [2021-11-07 13:55:53,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 13:55:53,284 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:55:53,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:55:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 169280119, now seen corresponding path program 1 times [2021-11-07 13:55:53,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:55:53,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791177277] [2021-11-07 13:55:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:55:53,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:55:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-07 13:55:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-07 13:55:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-07 13:55:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 13:55:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:55:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:55:53,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:55:53,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791177277] [2021-11-07 13:55:53,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791177277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:55:53,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:55:53,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 13:55:53,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105918049] [2021-11-07 13:55:53,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:55:53,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 13:55:53,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:55:53,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 13:55:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:55:53,746 INFO L87 Difference]: Start difference. First operand 47043 states and 65883 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 13:55:55,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:56:12,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:56:12,337 INFO L93 Difference]: Finished difference Result 75085 states and 105925 transitions. [2021-11-07 13:56:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 13:56:12,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 132 [2021-11-07 13:56:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:56:12,440 INFO L225 Difference]: With dead ends: 75085 [2021-11-07 13:56:12,441 INFO L226 Difference]: Without dead ends: 48513 [2021-11-07 13:56:12,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 69.25ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 13:56:12,502 INFO L933 BasicCegarLoop]: 15708 mSDtfsCounter, 580 mSDsluCounter, 55229 mSDsCounter, 0 mSdLazyCounter, 7979 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15139.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 70937 SdHoareTripleChecker+Invalid, 8036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.79ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 7979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17264.72ms IncrementalHoareTripleChecker+Time [2021-11-07 13:56:12,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 70937 Invalid, 8036 Unknown, 0 Unchecked, 87.79ms Time], IncrementalHoareTripleChecker [57 Valid, 7979 Invalid, 0 Unknown, 0 Unchecked, 17264.72ms Time] [2021-11-07 13:56:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48513 states. [2021-11-07 13:56:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48513 to 47073. [2021-11-07 13:56:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47073 states, 46426 states have (on average 1.3973420066342135) internal successors, (64873), 46512 states have internal predecessors, (64873), 405 states have call successors, (405), 200 states have call predecessors, (405), 240 states have return successors, (635), 410 states have call predecessors, (635), 405 states have call successors, (635) [2021-11-07 13:56:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47073 states to 47073 states and 65913 transitions. [2021-11-07 13:56:13,630 INFO L78 Accepts]: Start accepts. Automaton has 47073 states and 65913 transitions. Word has length 132 [2021-11-07 13:56:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:56:13,630 INFO L470 AbstractCegarLoop]: Abstraction has 47073 states and 65913 transitions. [2021-11-07 13:56:13,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 13:56:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47073 states and 65913 transitions. [2021-11-07 13:56:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 13:56:13,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:56:13,669 INFO L514 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, 1, 1] [2021-11-07 13:56:13,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 13:56:13,669 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 13:56:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:56:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1771757657, now seen corresponding path program 1 times [2021-11-07 13:56:13,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:56:13,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245974766] [2021-11-07 13:56:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:56:13,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:56:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:56:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-07 13:56:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:56:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-07 13:56:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:56:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-07 13:56:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:56:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 13:56:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:56:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:56:13,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:56:13,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245974766] [2021-11-07 13:56:13,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245974766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:56:13,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:56:13,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:56:13,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879220904] [2021-11-07 13:56:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:56:13,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:56:13,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:56:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:56:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:56:13,894 INFO L87 Difference]: Start difference. First operand 47073 states and 65913 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-07 13:56:15,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []