./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.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 b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:47:38,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:47:38,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:47:38,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:47:38,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:47:38,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:47:38,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:47:38,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:47:38,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:47:38,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:47:38,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:47:38,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:47:38,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:47:38,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:47:38,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:47:38,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:47:38,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:47:38,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:47:38,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:47:38,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:47:38,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:47:38,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:47:38,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:47:38,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:47:38,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:47:38,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:47:38,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:47:38,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:47:38,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:47:38,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:47:38,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:47:38,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:47:38,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:47:38,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:47:38,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:47:38,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:47:38,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:47:38,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:47:38,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:47:38,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:47:38,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:47:38,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:47:38,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:47:38,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:47:38,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:47:38,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:47:38,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:47:38,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:47:38,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:47:38,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:47:38,599 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:47:38,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:47:38,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:47:38,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:47:38,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:47:38,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:47:38,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:47:38,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:47:38,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:47:38,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:47:38,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:47:38,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:47:38,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:47:38,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:47:38,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:47:38,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:47:38,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:47:38,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:47:38,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:47:38,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:47:38,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:47:38,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:47:38,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:47:38,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 [2021-12-14 17:47:38,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:47:38,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:47:38,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:47:38,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:47:38,857 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:47:38,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-12-14 17:47:38,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c8b40801/83d88f72f8c741af8fbd1bd36e273d66/FLAG27fe9a942 [2021-12-14 17:47:39,528 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:47:39,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-12-14 17:47:39,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c8b40801/83d88f72f8c741af8fbd1bd36e273d66/FLAG27fe9a942 [2021-12-14 17:47:39,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c8b40801/83d88f72f8c741af8fbd1bd36e273d66 [2021-12-14 17:47:39,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:47:39,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:47:39,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:47:39,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:47:39,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:47:39,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:39" (1/1) ... [2021-12-14 17:47:39,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad8026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:39, skipping insertion in model container [2021-12-14 17:47:39,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:39" (1/1) ... [2021-12-14 17:47:39,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:47:39,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:47:40,045 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-12-14 17:47:40,045 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-12-14 17:47:40,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-12-14 17:47:40,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:47:40,769 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:47:40,810 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-12-14 17:47:40,811 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-12-14 17:47:40,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-12-14 17:47:41,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:47:41,160 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:47:41,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41 WrapperNode [2021-12-14 17:47:41,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:47:41,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:47:41,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:47:41,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:47:41,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,382 INFO L137 Inliner]: procedures = 276, calls = 1927, calls flagged for inlining = 125, calls inlined = 123, statements flattened = 4524 [2021-12-14 17:47:41,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:47:41,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:47:41,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:47:41,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:47:41,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:47:41,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:47:41,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:47:41,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:47:41,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (1/1) ... [2021-12-14 17:47:41,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:47:41,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:47:41,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:47:41,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:47:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_clear_stall [2021-12-14 17:47:41,732 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_clear_stall [2021-12-14 17:47:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_bit_clr [2021-12-14 17:47:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_bit_clr [2021-12-14 17:47:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_ep_status [2021-12-14 17:47:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_ep_status [2021-12-14 17:47:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:47:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:47:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_init_setup_buff [2021-12-14 17:47:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_init_setup_buff [2021-12-14 17:47:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_bit_set [2021-12-14 17:47:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_bit_set [2021-12-14 17:47:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:47:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:47:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-12-14 17:47:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-12-14 17:47:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-12-14 17:47:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-12-14 17:47:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 17:47:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 17:47:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:47:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:47:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-14 17:47:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-14 17:47:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_shutdown [2021-12-14 17:47:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_shutdown [2021-12-14 17:47:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_dma [2021-12-14 17:47:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_dma [2021-12-14 17:47:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_csr_busy [2021-12-14 17:47:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_csr_busy [2021-12-14 17:47:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 17:47:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 17:47:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_stop [2021-12-14 17:47:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_stop [2021-12-14 17:47:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-14 17:47:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-14 17:47:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_writel [2021-12-14 17:47:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_writel [2021-12-14 17:47:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:47:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:47:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 17:47:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 17:47:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_svc_data_out [2021-12-14 17:47:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_svc_data_out [2021-12-14 17:47:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_free_dma_chain [2021-12-14 17:47:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_free_dma_chain [2021-12-14 17:47:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:47:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:47:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-12-14 17:47:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-12-14 17:47:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_readl [2021-12-14 17:47:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_readl [2021-12-14 17:47:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:47:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:47:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-14 17:47:41,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-14 17:47:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_ep_control [2021-12-14 17:47:41,743 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_ep_control [2021-12-14 17:47:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-14 17:47:41,743 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-14 17:47:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_rrdy [2021-12-14 17:47:41,743 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_rrdy [2021-12-14 17:47:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_reconnect [2021-12-14 17:47:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_reconnect [2021-12-14 17:47:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:47:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_readl [2021-12-14 17:47:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_readl [2021-12-14 17:47:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:47:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:47:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_postsvc_epinters [2021-12-14 17:47:41,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_postsvc_epinters [2021-12-14 17:47:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-12-14 17:47:41,746 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-12-14 17:47:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:47:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-14 17:47:41,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-14 17:47:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-12-14 17:47:41,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-12-14 17:47:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start_rxrequest [2021-12-14 17:47:41,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start_rxrequest [2021-12-14 17:47:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-14 17:47:41,747 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-14 17:47:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 17:47:41,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 17:47:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:47:41,747 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:47:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-14 17:47:41,748 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-14 17:47:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-12-14 17:47:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-12-14 17:47:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:47:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_maxpkt [2021-12-14 17:47:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_maxpkt [2021-12-14 17:47:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:47:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:47:41,750 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:47:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_fifo_flush [2021-12-14 17:47:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_fifo_flush [2021-12-14 17:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_disable_ep_interrupts [2021-12-14 17:47:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_disable_ep_interrupts [2021-12-14 17:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_set_dma [2021-12-14 17:47:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_set_dma [2021-12-14 17:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_get_value [2021-12-14 17:47:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_get_value [2021-12-14 17:47:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-14 17:47:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-14 17:47:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:47:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:47:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_wait_ep_stall [2021-12-14 17:47:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_wait_ep_stall [2021-12-14 17:47:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:47:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:47:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:47:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_write_ep_interrupts [2021-12-14 17:47:41,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_write_ep_interrupts [2021-12-14 17:47:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 17:47:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 17:47:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:47:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:47:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_fifo_flush [2021-12-14 17:47:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_fifo_flush [2021-12-14 17:47:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_clear_nak [2021-12-14 17:47:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_clear_nak [2021-12-14 17:47:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-14 17:47:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-14 17:47:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:47:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure complete_req [2021-12-14 17:47:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_req [2021-12-14 17:47:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_writel [2021-12-14 17:47:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_writel [2021-12-14 17:47:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure empty_req_queue [2021-12-14 17:47:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure empty_req_queue [2021-12-14 17:47:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:47:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 17:47:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 17:47:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_nak [2021-12-14 17:47:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_nak [2021-12-14 17:47:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-12-14 17:47:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-12-14 17:47:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_csr [2021-12-14 17:47:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_csr [2021-12-14 17:47:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:47:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:47:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start [2021-12-14 17:47:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start [2021-12-14 17:47:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 17:47:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 17:47:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_bit_set [2021-12-14 17:47:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_bit_set [2021-12-14 17:47:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_device_status [2021-12-14 17:47:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_device_status [2021-12-14 17:47:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:47:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:47:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:47:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:47:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_ddptr [2021-12-14 17:47:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_ddptr [2021-12-14 17:47:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:47:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 17:47:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 17:47:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 17:47:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 17:47:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:47:41,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:47:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_dequeue [2021-12-14 17:47:41,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_dequeue [2021-12-14 17:47:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_disable_interrupts [2021-12-14 17:47:41,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_disable_interrupts [2021-12-14 17:47:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_ep_control [2021-12-14 17:47:41,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_ep_control [2021-12-14 17:47:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_to_desc [2021-12-14 17:47:41,769 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_to_desc [2021-12-14 17:47:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_stall [2021-12-14 17:47:41,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_stall [2021-12-14 17:47:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:47:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_init [2021-12-14 17:47:41,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_init [2021-12-14 17:47:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-14 17:47:41,769 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-14 17:47:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start_next_txrequest [2021-12-14 17:47:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start_next_txrequest [2021-12-14 17:47:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:47:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-14 17:47:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-14 17:47:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_probe [2021-12-14 17:47:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_probe [2021-12-14 17:47:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 17:47:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 17:47:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:47:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 17:47:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 17:47:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:47:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:47:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_enable_ep_interrupts [2021-12-14 17:47:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_enable_ep_interrupts [2021-12-14 17:47:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-12-14 17:47:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-12-14 17:47:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_ep_status [2021-12-14 17:47:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_ep_status [2021-12-14 17:47:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_free_request [2021-12-14 17:47:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_free_request [2021-12-14 17:47:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_ep_enable [2021-12-14 17:47:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_ep_enable [2021-12-14 17:47:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_write_csr [2021-12-14 17:47:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_write_csr [2021-12-14 17:47:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-14 17:47:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-14 17:47:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_complete_transfer [2021-12-14 17:47:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_complete_transfer [2021-12-14 17:47:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_remove [2021-12-14 17:47:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_remove [2021-12-14 17:47:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-14 17:47:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-14 17:47:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_work_fall [2021-12-14 17:47:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_work_fall [2021-12-14 17:47:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-14 17:47:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-14 17:47:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-12-14 17:47:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-12-14 17:47:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_bit_clr [2021-12-14 17:47:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_bit_clr [2021-12-14 17:47:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:47:41,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:47:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:47:41,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:47:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_set_disconnect [2021-12-14 17:47:41,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_set_disconnect [2021-12-14 17:47:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:47:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_bufsz [2021-12-14 17:47:41,777 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_bufsz [2021-12-14 17:47:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:47:41,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:47:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_enable_interrupts [2021-12-14 17:47:41,777 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_enable_interrupts [2021-12-14 17:47:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-12-14 17:47:41,777 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-12-14 17:47:42,389 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:47:42,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:47:42,609 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:47:47,413 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:47:47,437 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:47:47,438 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-14 17:47:47,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:47:47 BoogieIcfgContainer [2021-12-14 17:47:47,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:47:47,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:47:47,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:47:47,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:47:47,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:47:39" (1/3) ... [2021-12-14 17:47:47,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5958bbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:47:47, skipping insertion in model container [2021-12-14 17:47:47,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:41" (2/3) ... [2021-12-14 17:47:47,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5958bbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:47:47, skipping insertion in model container [2021-12-14 17:47:47,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:47:47" (3/3) ... [2021-12-14 17:47:47,451 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-12-14 17:47:47,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:47:47,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:47:47,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:47:47,501 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:47:47,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:47:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 1795 states, 1184 states have (on average 1.3597972972972974) internal successors, (1610), 1255 states have internal predecessors, (1610), 505 states have call successors, (505), 110 states have call predecessors, (505), 109 states have return successors, (496), 482 states have call predecessors, (496), 496 states have call successors, (496) [2021-12-14 17:47:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 17:47:47,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:47,552 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-14 17:47:47,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1740150991, now seen corresponding path program 1 times [2021-12-14 17:47:47,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:47,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552634919] [2021-12-14 17:47:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:47,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:47:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 17:47:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:48,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:47:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 17:47:48,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:48,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552634919] [2021-12-14 17:47:48,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552634919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:48,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:48,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:47:48,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416589365] [2021-12-14 17:47:48,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:48,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:47:48,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:47:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:47:48,139 INFO L87 Difference]: Start difference. First operand has 1795 states, 1184 states have (on average 1.3597972972972974) internal successors, (1610), 1255 states have internal predecessors, (1610), 505 states have call successors, (505), 110 states have call predecessors, (505), 109 states have return successors, (496), 482 states have call predecessors, (496), 496 states have call successors, (496) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:47:51,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:54,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:59,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:01,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:48:03,546 INFO L93 Difference]: Finished difference Result 5435 states and 8077 transitions. [2021-12-14 17:48:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:48:03,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 48 [2021-12-14 17:48:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:48:03,582 INFO L225 Difference]: With dead ends: 5435 [2021-12-14 17:48:03,582 INFO L226 Difference]: Without dead ends: 3602 [2021-12-14 17:48:03,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:48:03,603 INFO L933 BasicCegarLoop]: 2688 mSDtfsCounter, 3985 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 2913 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 6247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2913 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:48:03,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4303 Valid, 6067 Invalid, 6247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2913 Valid, 3330 Invalid, 4 Unknown, 0 Unchecked, 14.9s Time] [2021-12-14 17:48:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-12-14 17:48:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3299. [2021-12-14 17:48:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2160 states have (on average 1.3388888888888888) internal successors, (2892), 2267 states have internal predecessors, (2892), 922 states have call successors, (922), 217 states have call predecessors, (922), 216 states have return successors, (921), 893 states have call predecessors, (921), 921 states have call successors, (921) [2021-12-14 17:48:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4735 transitions. [2021-12-14 17:48:03,897 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4735 transitions. Word has length 48 [2021-12-14 17:48:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:48:03,898 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4735 transitions. [2021-12-14 17:48:03,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:48:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4735 transitions. [2021-12-14 17:48:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 17:48:03,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:48:03,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-14 17:48:03,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:48:03,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:48:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:48:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash -701291158, now seen corresponding path program 1 times [2021-12-14 17:48:03,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:48:03,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631561772] [2021-12-14 17:48:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:48:03,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:48:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:48:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:48:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:48:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 17:48:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:48:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 17:48:04,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:48:04,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631561772] [2021-12-14 17:48:04,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631561772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:48:04,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:48:04,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:48:04,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561398863] [2021-12-14 17:48:04,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:48:04,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:48:04,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:48:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:48:04,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:48:04,131 INFO L87 Difference]: Start difference. First operand 3299 states and 4735 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:48:10,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:13,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:16,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:17,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:48:17,872 INFO L93 Difference]: Finished difference Result 10340 states and 14993 transitions. [2021-12-14 17:48:17,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:48:17,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-12-14 17:48:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:48:17,954 INFO L225 Difference]: With dead ends: 10340 [2021-12-14 17:48:17,954 INFO L226 Difference]: Without dead ends: 7054 [2021-12-14 17:48:17,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:48:17,973 INFO L933 BasicCegarLoop]: 3193 mSDtfsCounter, 3981 mSDsluCounter, 3786 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 2731 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4328 SdHoareTripleChecker+Valid, 6979 SdHoareTripleChecker+Invalid, 6347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2731 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:48:17,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4328 Valid, 6979 Invalid, 6347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2731 Valid, 3613 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2021-12-14 17:48:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2021-12-14 17:48:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 6451. [2021-12-14 17:48:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6451 states, 4218 states have (on average 1.3380749170222854) internal successors, (5644), 4433 states have internal predecessors, (5644), 1804 states have call successors, (1804), 429 states have call predecessors, (1804), 428 states have return successors, (1803), 1746 states have call predecessors, (1803), 1803 states have call successors, (1803) [2021-12-14 17:48:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 9251 transitions. [2021-12-14 17:48:18,245 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 9251 transitions. Word has length 50 [2021-12-14 17:48:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:48:18,246 INFO L470 AbstractCegarLoop]: Abstraction has 6451 states and 9251 transitions. [2021-12-14 17:48:18,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:48:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 9251 transitions. [2021-12-14 17:48:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 17:48:18,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:48:18,254 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-14 17:48:18,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:48:18,254 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:48:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:48:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -782389508, now seen corresponding path program 1 times [2021-12-14 17:48:18,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:48:18,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735057246] [2021-12-14 17:48:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:48:18,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:48:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:48:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:48:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:48:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 17:48:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:48:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:48:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:48:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:48:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:48:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:48:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 17:48:18,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:48:18,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735057246] [2021-12-14 17:48:18,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735057246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:48:18,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:48:18,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:48:18,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879489855] [2021-12-14 17:48:18,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:48:18,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:48:18,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:48:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:48:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:48:18,582 INFO L87 Difference]: Start difference. First operand 6451 states and 9251 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-14 17:48:24,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:26,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:48:27,874 INFO L93 Difference]: Finished difference Result 9787 states and 14056 transitions. [2021-12-14 17:48:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:48:27,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 93 [2021-12-14 17:48:27,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:48:27,937 INFO L225 Difference]: With dead ends: 9787 [2021-12-14 17:48:27,938 INFO L226 Difference]: Without dead ends: 9784 [2021-12-14 17:48:27,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:48:27,946 INFO L933 BasicCegarLoop]: 2441 mSDtfsCounter, 2898 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 2151 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2151 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:48:27,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 5613 Invalid, 4920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2151 Valid, 2767 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2021-12-14 17:48:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2021-12-14 17:48:28,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 8985. [2021-12-14 17:48:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8985 states, 5964 states have (on average 1.3335010060362174) internal successors, (7953), 6216 states have internal predecessors, (7953), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 663 states have return successors, (2396), 2288 states have call predecessors, (2396), 2356 states have call successors, (2396) [2021-12-14 17:48:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8985 states to 8985 states and 12706 transitions. [2021-12-14 17:48:28,343 INFO L78 Accepts]: Start accepts. Automaton has 8985 states and 12706 transitions. Word has length 93 [2021-12-14 17:48:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:48:28,344 INFO L470 AbstractCegarLoop]: Abstraction has 8985 states and 12706 transitions. [2021-12-14 17:48:28,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-14 17:48:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8985 states and 12706 transitions. [2021-12-14 17:48:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 17:48:28,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:48:28,358 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-12-14 17:48:28,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:48:28,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:48:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:48:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash -321111901, now seen corresponding path program 1 times [2021-12-14 17:48:28,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:48:28,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231976065] [2021-12-14 17:48:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:48:28,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:48:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:48:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:48:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:48:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 17:48:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:48:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:48:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:48:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:48:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:48:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:48:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:48:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 17:48:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 17:48:28,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:48:28,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231976065] [2021-12-14 17:48:28,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231976065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:48:28,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:48:28,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:48:28,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181957250] [2021-12-14 17:48:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:48:28,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:48:28,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:48:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:48:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:48:28,611 INFO L87 Difference]: Start difference. First operand 8985 states and 12706 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:48:34,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:48:36,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []