./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 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-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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:25:00,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:25:00,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:25:00,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:25:00,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:25:00,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:25:00,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:25:00,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:25:00,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:25:00,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:25:00,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:25:00,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:25:00,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:25:00,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:25:00,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:25:00,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:25:00,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:25:00,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:25:00,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:25:00,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:25:00,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:25:00,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:25:00,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:25:00,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:25:00,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:25:00,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:25:00,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:25:00,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:25:00,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:25:00,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:25:00,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:25:00,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:25:00,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:25:00,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:25:00,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:25:00,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:25:00,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:25:00,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:25:00,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:25:00,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:25:00,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:25:00,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:25:00,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:25:00,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:25:00,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:25:00,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:25:00,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:25:00,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:25:00,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:25:00,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:25:00,996 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:25:00,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:25:00,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:25:00,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:25:00,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:25:00,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:25:00,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:25:00,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:25:00,998 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:25:00,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:25:00,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:25:00,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:25:00,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:25:00,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:25:00,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:25:01,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:25:01,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:25:01,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:25:01,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:25:01,000 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:25:01,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:25:01,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:25:01,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:25:01,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41a06dba17575946a131560ceaa3b40649c8b00d9b30bc4696c27d89715c52b3 [2021-12-14 18:25:01,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:25:01,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:25:01,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:25:01,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:25:01,241 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:25:01,242 INFO L432 ainManager$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 [2021-12-14 18:25:01,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6a06fa4/5b8c57751e334de19d4ca700640bf829/FLAG2e4cc4c50 [2021-12-14 18:25:01,919 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:25:01,920 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 [2021-12-14 18:25:01,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6a06fa4/5b8c57751e334de19d4ca700640bf829/FLAG2e4cc4c50 [2021-12-14 18:25:02,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6a06fa4/5b8c57751e334de19d4ca700640bf829 [2021-12-14 18:25:02,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:25:02,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:25:02,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:25:02,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:25:02,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:25:02,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:25:02" (1/1) ... [2021-12-14 18:25:02,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e5dd97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:02, skipping insertion in model container [2021-12-14 18:25:02,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:25:02" (1/1) ... [2021-12-14 18:25:02,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:25:02,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:25:03,503 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] [2021-12-14 18:25:03,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:25:03,570 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:25:03,810 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] [2021-12-14 18:25:03,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:25:03,868 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:25:03,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03 WrapperNode [2021-12-14 18:25:03,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:25:03,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:25:03,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:25:03,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:25:03,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:03,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,148 INFO L137 Inliner]: procedures = 267, calls = 2813, calls flagged for inlining = 120, calls inlined = 111, statements flattened = 6192 [2021-12-14 18:25:04,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:25:04,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:25:04,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:25:04,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:25:04,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:25:04,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:25:04,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:25:04,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:25:04,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (1/1) ... [2021-12-14 18:25:04,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:25:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:25:04,425 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 18:25:04,447 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 18:25:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-14 18:25:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-14 18:25:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 18:25:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 18:25:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-14 18:25:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-14 18:25:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_kick_command_queue [2021-12-14 18:25:04,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_kick_command_queue [2021-12-14 18:25:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:25:04,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:25:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:25:04,460 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:25:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_flush_input_fifo [2021-12-14 18:25:04,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_flush_input_fifo [2021-12-14 18:25:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:25:04,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:25:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-14 18:25:04,462 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-14 18:25:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_config [2021-12-14 18:25:04,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_config [2021-12-14 18:25:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-14 18:25:04,462 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-14 18:25:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-14 18:25:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-14 18:25:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-12-14 18:25:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-12-14 18:25:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 18:25:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 18:25:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-14 18:25:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-14 18:25:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:25:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:25:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-14 18:25:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-14 18:25:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:25:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:25:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_status_work [2021-12-14 18:25:04,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_status_work [2021-12-14 18:25:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_cancel_work [2021-12-14 18:25:04,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_cancel_work [2021-12-14 18:25:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:25:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 18:25:04,466 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 18:25:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-14 18:25:04,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-14 18:25:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-12-14 18:25:04,466 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-12-14 18:25:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_get_kref [2021-12-14 18:25:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_get_kref [2021-12-14 18:25:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:25:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-14 18:25:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-14 18:25:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-14 18:25:04,468 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2021-12-14 18:25:04,468 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2021-12-14 18:25:04,468 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_cancel_work [2021-12-14 18:25:04,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_cancel_work [2021-12-14 18:25:04,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:25:04,469 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2021-12-14 18:25:04,470 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2021-12-14 18:25:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:25:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_cancel_work [2021-12-14 18:25:04,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_cancel_work [2021-12-14 18:25:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-14 18:25:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-14 18:25:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 18:25:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 18:25:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 18:25:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 18:25:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_do_callback [2021-12-14 18:25:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_do_callback [2021-12-14 18:25:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_requeue_work [2021-12-14 18:25:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_requeue_work [2021-12-14 18:25:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 18:25:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 18:25:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_45 [2021-12-14 18:25:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_45 [2021-12-14 18:25:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_44 [2021-12-14 18:25:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_44 [2021-12-14 18:25:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-14 18:25:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-14 18:25:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_43 [2021-12-14 18:25:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_43 [2021-12-14 18:25:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-14 18:25:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-14 18:25:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-14 18:25:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-14 18:25:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_found_controller [2021-12-14 18:25:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_found_controller [2021-12-14 18:25:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_setup_controller [2021-12-14 18:25:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_setup_controller [2021-12-14 18:25:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_gone_away [2021-12-14 18:25:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_gone_away [2021-12-14 18:25:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_config [2021-12-14 18:25:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_config [2021-12-14 18:25:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_respond_work [2021-12-14 18:25:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_respond_work [2021-12-14 18:25:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:25:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_requeue_work [2021-12-14 18:25:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_requeue_work [2021-12-14 18:25:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-14 18:25:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-14 18:25:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-14 18:25:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-14 18:25:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:25:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-14 18:25:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-14 18:25:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_reg [2021-12-14 18:25:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_reg [2021-12-14 18:25:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_disconnect [2021-12-14 18:25:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_disconnect [2021-12-14 18:25:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_respond_queue_work [2021-12-14 18:25:04,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_respond_queue_work [2021-12-14 18:25:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write [2021-12-14 18:25:04,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write [2021-12-14 18:25:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 18:25:04,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 18:25:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:25:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:25:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_completions [2021-12-14 18:25:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_completions [2021-12-14 18:25:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-14 18:25:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-14 18:25:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:25:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-14 18:25:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-14 18:25:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:25:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:25:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_command_work [2021-12-14 18:25:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_command_work [2021-12-14 18:25:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:25:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:25:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_put_kref [2021-12-14 18:25:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_put_kref [2021-12-14 18:25:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_targets [2021-12-14 18:25:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_targets [2021-12-14 18:25:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:25:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_pcimem [2021-12-14 18:25:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_pcimem [2021-12-14 18:25:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:25:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:25:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-14 18:25:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-14 18:25:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:25:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-14 18:25:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-14 18:25:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:25:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_requeue_work [2021-12-14 18:25:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_requeue_work [2021-12-14 18:25:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 18:25:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 18:25:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_queue_work [2021-12-14 18:25:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_queue_work [2021-12-14 18:25:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 18:25:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 18:25:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_pcimem [2021-12-14 18:25:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_pcimem [2021-12-14 18:25:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-14 18:25:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-14 18:25:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-14 18:25:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-14 18:25:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-14 18:25:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-14 18:25:04,494 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 18:25:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 18:25:04,494 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-14 18:25:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-14 18:25:04,494 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_reg [2021-12-14 18:25:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_reg [2021-12-14 18:25:04,494 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-12-14 18:25:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-12-14 18:25:04,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:25:04,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:25:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:25:05,056 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:25:05,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:25:06,899 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:25:13,499 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:25:13,520 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:25:13,520 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:25:13,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:25:13 BoogieIcfgContainer [2021-12-14 18:25:13,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:25:13,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:25:13,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:25:13,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:25:13,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:25:02" (1/3) ... [2021-12-14 18:25:13,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e58eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:25:13, skipping insertion in model container [2021-12-14 18:25:13,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:25:03" (2/3) ... [2021-12-14 18:25:13,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e58eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:25:13, skipping insertion in model container [2021-12-14 18:25:13,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:25:13" (3/3) ... [2021-12-14 18:25:13,529 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-12-14 18:25:13,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:25:13,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:25:13,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:25:13,594 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 18:25:13,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:25:13,635 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) [2021-12-14 18:25:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-14 18:25:13,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:13,644 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] [2021-12-14 18:25:13,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash -83664043, now seen corresponding path program 1 times [2021-12-14 18:25:13,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:13,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010058628] [2021-12-14 18:25:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:13,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:25:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:25:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:25:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:25:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:25:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 18:25:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 18:25:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 18:25:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-14 18:25:14,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:14,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010058628] [2021-12-14 18:25:14,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010058628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:14,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:14,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:25:14,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727083625] [2021-12-14 18:25:14,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:14,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:25:14,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:25:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:25:14,446 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) [2021-12-14 18:25:19,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:23,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:25,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:33,775 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 18:25:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:25:36,704 INFO L93 Difference]: Finished difference Result 3426 states and 5410 transitions. [2021-12-14 18:25:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:25:36,706 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 [2021-12-14 18:25:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:25:36,740 INFO L225 Difference]: With dead ends: 3426 [2021-12-14 18:25:36,741 INFO L226 Difference]: Without dead ends: 1848 [2021-12-14 18:25:36,761 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 [2021-12-14 18:25:36,763 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 873 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 1142 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1142 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:25:36,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 5068 Invalid, 3360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1142 Valid, 2215 Invalid, 3 Unknown, 0 Unchecked, 21.9s Time] [2021-12-14 18:25:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-12-14 18:25:36,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1549. [2021-12-14 18:25:36,910 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) [2021-12-14 18:25:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2306 transitions. [2021-12-14 18:25:36,922 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2306 transitions. Word has length 126 [2021-12-14 18:25:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:25:36,923 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2306 transitions. [2021-12-14 18:25:36,923 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) [2021-12-14 18:25:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2306 transitions. [2021-12-14 18:25:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-14 18:25:36,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:36,931 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] [2021-12-14 18:25:36,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:25:36,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 956425439, now seen corresponding path program 1 times [2021-12-14 18:25:36,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:36,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077490575] [2021-12-14 18:25:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:36,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:25:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:25:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:25:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:25:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:25:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 18:25:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 18:25:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 18:25:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-14 18:25:37,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:37,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077490575] [2021-12-14 18:25:37,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077490575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:37,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:37,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:25:37,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924855878] [2021-12-14 18:25:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:37,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:25:37,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:37,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:25:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:25:37,278 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) [2021-12-14 18:25:38,586 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 [] [2021-12-14 18:25:41,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:47,588 WARN L534 Checker$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 18:25:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:25:54,301 INFO L93 Difference]: Finished difference Result 5015 states and 7818 transitions. [2021-12-14 18:25:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:25:54,302 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 [2021-12-14 18:25:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:25:54,321 INFO L225 Difference]: With dead ends: 5015 [2021-12-14 18:25:54,321 INFO L226 Difference]: Without dead ends: 3495 [2021-12-14 18:25:54,329 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 [2021-12-14 18:25:54,330 INFO L933 BasicCegarLoop]: 2461 mSDtfsCounter, 4640 mSDsluCounter, 3106 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 3600 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4925 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 5539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3600 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:25:54,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4925 Valid, 5567 Invalid, 5539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3600 Valid, 1938 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2021-12-14 18:25:54,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2021-12-14 18:25:54,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 2899. [2021-12-14 18:25:54,420 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) [2021-12-14 18:25:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4329 transitions. [2021-12-14 18:25:54,436 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4329 transitions. Word has length 126 [2021-12-14 18:25:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:25:54,438 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 4329 transitions. [2021-12-14 18:25:54,438 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) [2021-12-14 18:25:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4329 transitions. [2021-12-14 18:25:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 18:25:54,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:54,440 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] [2021-12-14 18:25:54,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:25:54,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2036529676, now seen corresponding path program 1 times [2021-12-14 18:25:54,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:54,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589409715] [2021-12-14 18:25:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:54,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:25:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:25:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:25:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:25:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:25:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 18:25:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 18:25:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 18:25:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-14 18:25:54,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:54,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589409715] [2021-12-14 18:25:54,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589409715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:54,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:54,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:25:54,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30225296] [2021-12-14 18:25:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:54,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:25:54,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:25:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:25:54,792 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) [2021-12-14 18:26:00,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:26:07,336 WARN L534 Checker$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 18:26:09,991 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 []