./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.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 41a06dba17575946a131560ceaa3b40649c8b00d9b30bc4696c27d89715c52b3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 15:19:08,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:19:08,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:19:08,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:19:08,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:19:08,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:19:08,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:19:08,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:19:08,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:19:08,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:19:08,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:19:08,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:19:08,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:19:08,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:19:08,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:19:08,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:19:08,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:19:08,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:19:08,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:19:08,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:19:08,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:19:08,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:19:08,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:19:08,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:19:08,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:19:08,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:19:08,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:19:08,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:19:08,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:19:08,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:19:08,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:19:08,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:19:08,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:19:08,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:19:08,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:19:08,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:19:08,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:19:08,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:19:08,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:19:08,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:19:08,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:19:08,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:19:08,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:19:08,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:19:08,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:19:08,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:19:08,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:19:08,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:19:08,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:19:08,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:19:08,886 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:19:08,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:19:08,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:19:08,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:19:08,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:19:08,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:19:08,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:19:08,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:19:08,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:19:08,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:19:08,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:19:08,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:19:08,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:19:08,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:19:08,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:19:08,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:19:08,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:19:08,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:19:08,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:19:08,895 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:19:08,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:19:08,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:19:08,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:19:08,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41a06dba17575946a131560ceaa3b40649c8b00d9b30bc4696c27d89715c52b3 [2021-12-22 15:19:09,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:19:09,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:19:09,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:19:09,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:19:09,095 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:19:09,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-12-22 15:19:09,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbbc0463/aab75c1c93a94a7ebab30e6c7a7342c4/FLAGab1610a4a [2021-12-22 15:19:09,697 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:19:09,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-12-22 15:19:09,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbbc0463/aab75c1c93a94a7ebab30e6c7a7342c4/FLAGab1610a4a [2021-12-22 15:19:09,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbbc0463/aab75c1c93a94a7ebab30e6c7a7342c4 [2021-12-22 15:19:09,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:19:09,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:19:09,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:19:09,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:19:09,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:19:09,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:19:09" (1/1) ... [2021-12-22 15:19:09,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695afa4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:09, skipping insertion in model container [2021-12-22 15:19:09,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:19:09" (1/1) ... [2021-12-22 15:19:09,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:19:09,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:19:11,009 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[263943,263956] [2021-12-22 15:19:11,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:19:11,097 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:19:11,371 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[263943,263956] [2021-12-22 15:19:11,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:19:11,436 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:19:11,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11 WrapperNode [2021-12-22 15:19:11,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:19:11,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:19:11,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:19:11,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:19:11,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,649 INFO L137 Inliner]: procedures = 267, calls = 2813, calls flagged for inlining = 120, calls inlined = 111, statements flattened = 6192 [2021-12-22 15:19:11,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:19:11,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:19:11,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:19:11,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:19:11,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:19:11,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:19:11,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:19:11,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:19:11,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (1/1) ... [2021-12-22 15:19:11,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:19:11,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:19:11,900 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) [2021-12-22 15:19:11,907 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 [2021-12-22 15:19:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-22 15:19:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-22 15:19:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 15:19:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 15:19:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-22 15:19:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-22 15:19:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_kick_command_queue [2021-12-22 15:19:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_kick_command_queue [2021-12-22 15:19:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:19:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:19:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:19:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:19:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_flush_input_fifo [2021-12-22 15:19:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_flush_input_fifo [2021-12-22 15:19:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:19:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:19:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-22 15:19:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-22 15:19:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_config [2021-12-22 15:19:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_config [2021-12-22 15:19:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-22 15:19:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-22 15:19:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-22 15:19:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-22 15:19:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-12-22 15:19:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-12-22 15:19:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 15:19:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 15:19:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-22 15:19:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-22 15:19:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 15:19:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 15:19:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-22 15:19:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-22 15:19:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 15:19:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 15:19:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_status_work [2021-12-22 15:19:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_status_work [2021-12-22 15:19:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_cancel_work [2021-12-22 15:19:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_cancel_work [2021-12-22 15:19:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:19:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 15:19:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 15:19:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-22 15:19:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-22 15:19:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-12-22 15:19:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-12-22 15:19:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_get_kref [2021-12-22 15:19:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_get_kref [2021-12-22 15:19:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:19:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-22 15:19:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-22 15:19:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-22 15:19:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2021-12-22 15:19:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2021-12-22 15:19:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_cancel_work [2021-12-22 15:19:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_cancel_work [2021-12-22 15:19:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:19:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2021-12-22 15:19:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2021-12-22 15:19:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:19:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_cancel_work [2021-12-22 15:19:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_cancel_work [2021-12-22 15:19:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-22 15:19:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-22 15:19:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 15:19:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 15:19:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 15:19:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 15:19:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_do_callback [2021-12-22 15:19:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_do_callback [2021-12-22 15:19:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_requeue_work [2021-12-22 15:19:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_requeue_work [2021-12-22 15:19:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 15:19:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 15:19:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_45 [2021-12-22 15:19:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_45 [2021-12-22 15:19:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_44 [2021-12-22 15:19:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_44 [2021-12-22 15:19:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-22 15:19:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-22 15:19:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_43 [2021-12-22 15:19:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_43 [2021-12-22 15:19:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-22 15:19:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-22 15:19:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-22 15:19:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-22 15:19:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_found_controller [2021-12-22 15:19:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_found_controller [2021-12-22 15:19:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_setup_controller [2021-12-22 15:19:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_setup_controller [2021-12-22 15:19:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_gone_away [2021-12-22 15:19:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_gone_away [2021-12-22 15:19:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_config [2021-12-22 15:19:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_config [2021-12-22 15:19:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_respond_work [2021-12-22 15:19:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_respond_work [2021-12-22 15:19:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 15:19:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_requeue_work [2021-12-22 15:19:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_requeue_work [2021-12-22 15:19:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-22 15:19:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-22 15:19:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-22 15:19:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-22 15:19:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:19:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-22 15:19:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-22 15:19:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_reg [2021-12-22 15:19:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_reg [2021-12-22 15:19:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_disconnect [2021-12-22 15:19:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_disconnect [2021-12-22 15:19:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_respond_queue_work [2021-12-22 15:19:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_respond_queue_work [2021-12-22 15:19:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write [2021-12-22 15:19:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write [2021-12-22 15:19:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 15:19:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_completions [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_completions [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_command_work [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_command_work [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_put_kref [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_put_kref [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_targets [2021-12-22 15:19:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_targets [2021-12-22 15:19:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_pcimem [2021-12-22 15:19:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_pcimem [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 15:19:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-22 15:19:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-22 15:19:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_requeue_work [2021-12-22 15:19:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_requeue_work [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 15:19:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_queue_work [2021-12-22 15:19:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_queue_work [2021-12-22 15:19:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_pcimem [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_pcimem [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_reg [2021-12-22 15:19:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_reg [2021-12-22 15:19:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-12-22 15:19:11,991 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-12-22 15:19:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:19:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:19:11,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:19:12,600 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:19:12,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:19:14,346 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:19:21,326 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:19:21,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:19:21,343 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 15:19:21,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:19:21 BoogieIcfgContainer [2021-12-22 15:19:21,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:19:21,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:19:21,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:19:21,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:19:21,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:19:09" (1/3) ... [2021-12-22 15:19:21,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb3ecd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:19:21, skipping insertion in model container [2021-12-22 15:19:21,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:19:11" (2/3) ... [2021-12-22 15:19:21,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb3ecd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:19:21, skipping insertion in model container [2021-12-22 15:19:21,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:19:21" (3/3) ... [2021-12-22 15:19:21,353 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-12-22 15:19:21,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:19:21,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:19:21,413 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:19:21,424 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 [2021-12-22 15:19:21,425 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:19:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 1566 states, 1072 states have (on average 1.412313432835821) internal successors, (1514), 1124 states have internal predecessors, (1514), 413 states have call successors, (413), 80 states have call predecessors, (413), 79 states have return successors, (406), 392 states have call predecessors, (406), 406 states have call successors, (406) [2021-12-22 15:19:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-22 15:19:21,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:21,478 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:19:21,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash -83664043, now seen corresponding path program 1 times [2021-12-22 15:19:21,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252925475] [2021-12-22 15:19:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:21,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:19:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:19:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 15:19:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 15:19:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 15:19:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-22 15:19:22,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252925475] [2021-12-22 15:19:22,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252925475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:22,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:22,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 15:19:22,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926150070] [2021-12-22 15:19:22,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:22,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 15:19:22,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 15:19:22,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 15:19:22,147 INFO L87 Difference]: Start difference. First operand has 1566 states, 1072 states have (on average 1.412313432835821) internal successors, (1514), 1124 states have internal predecessors, (1514), 413 states have call successors, (413), 80 states have call predecessors, (413), 79 states have return successors, (406), 392 states have call predecessors, (406), 406 states have call successors, (406) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 15:19:30,683 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 [] [2021-12-22 15:19:32,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:38,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:19:40,334 INFO L93 Difference]: Finished difference Result 3426 states and 5410 transitions. [2021-12-22 15:19:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 15:19:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 126 [2021-12-22 15:19:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:19:40,357 INFO L225 Difference]: With dead ends: 3426 [2021-12-22 15:19:40,358 INFO L226 Difference]: Without dead ends: 1848 [2021-12-22 15:19:40,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:19:40,378 INFO L933 BasicCegarLoop]: 2174 mSDtfsCounter, 872 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 1141 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 5083 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-12-22 15:19:40,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 5083 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 2214 Invalid, 3 Unknown, 0 Unchecked, 17.9s Time] [2021-12-22 15:19:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-12-22 15:19:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1549. [2021-12-22 15:19:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1064 states have (on average 1.406015037593985) internal successors, (1496), 1108 states have internal predecessors, (1496), 406 states have call successors, (406), 79 states have call predecessors, (406), 78 states have return successors, (404), 390 states have call predecessors, (404), 404 states have call successors, (404) [2021-12-22 15:19:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2306 transitions. [2021-12-22 15:19:40,559 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2306 transitions. Word has length 126 [2021-12-22 15:19:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:19:40,560 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2306 transitions. [2021-12-22 15:19:40,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 15:19:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2306 transitions. [2021-12-22 15:19:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-22 15:19:40,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:40,567 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:19:40,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:19:40,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:40,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash 956425439, now seen corresponding path program 1 times [2021-12-22 15:19:40,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:40,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548143936] [2021-12-22 15:19:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:40,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:19:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:19:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 15:19:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 15:19:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 15:19:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-22 15:19:40,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:40,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548143936] [2021-12-22 15:19:40,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548143936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:40,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:40,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:19:40,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165430338] [2021-12-22 15:19:40,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:40,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:19:40,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:19:40,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:19:40,925 INFO L87 Difference]: Start difference. First operand 1549 states and 2306 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-22 15:19:43,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:50,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:55,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:19:58,138 INFO L93 Difference]: Finished difference Result 5015 states and 7818 transitions. [2021-12-22 15:19:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:19:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 126 [2021-12-22 15:19:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:19:58,156 INFO L225 Difference]: With dead ends: 5015 [2021-12-22 15:19:58,156 INFO L226 Difference]: Without dead ends: 3495 [2021-12-22 15:19:58,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:19:58,165 INFO L933 BasicCegarLoop]: 2459 mSDtfsCounter, 4643 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 3614 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4925 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 5536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3614 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-12-22 15:19:58,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4925 Valid, 5564 Invalid, 5536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3614 Valid, 1921 Invalid, 1 Unknown, 0 Unchecked, 16.9s Time] [2021-12-22 15:19:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2021-12-22 15:19:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 2899. [2021-12-22 15:19:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2000 states have (on average 1.4165) internal successors, (2833), 2085 states have internal predecessors, (2833), 749 states have call successors, (749), 150 states have call predecessors, (749), 149 states have return successors, (747), 719 states have call predecessors, (747), 747 states have call successors, (747) [2021-12-22 15:19:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4329 transitions. [2021-12-22 15:19:58,264 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4329 transitions. Word has length 126 [2021-12-22 15:19:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:19:58,266 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 4329 transitions. [2021-12-22 15:19:58,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-22 15:19:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4329 transitions. [2021-12-22 15:19:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 15:19:58,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:58,272 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:19:58,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 15:19:58,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2036529676, now seen corresponding path program 1 times [2021-12-22 15:19:58,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:58,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739063653] [2021-12-22 15:19:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:58,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:19:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:19:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:19:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:19:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:19:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 15:19:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 15:19:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 15:19:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-22 15:19:58,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:58,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739063653] [2021-12-22 15:19:58,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739063653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:58,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:58,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:19:58,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039972516] [2021-12-22 15:19:58,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:58,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:19:58,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:58,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:19:58,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:19:58,545 INFO L87 Difference]: Start difference. First operand 2899 states and 4329 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-22 15:20:00,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:02,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:03,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:07,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:10,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:20:15,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []