./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 ae007674 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-ae00767 [2021-12-28 04:37:19,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:37:19,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:37:19,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:37:19,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:37:19,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:37:19,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:37:19,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:37:19,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:37:19,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:37:19,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:37:19,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:37:19,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:37:19,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:37:19,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:37:19,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:37:19,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:37:19,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:37:19,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:37:19,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:37:19,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:37:19,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:37:19,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:37:19,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:37:19,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:37:19,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:37:19,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:37:19,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:37:19,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:37:19,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:37:19,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:37:19,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:37:19,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:37:19,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:37:19,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:37:19,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:37:19,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:37:19,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:37:19,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:37:19,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:37:19,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:37:19,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:37:19,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:37:19,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:37:19,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:37:19,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:37:19,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:37:19,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:37:19,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:37:19,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:37:19,245 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:37:19,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:37:19,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:37:19,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:37:19,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:37:19,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:37:19,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:37:19,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:37:19,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:37:19,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:37:19,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:37:19,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:37:19,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:37:19,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:37:19,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:37:19,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:37:19,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:37:19,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:37:19,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:37:19,249 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:37:19,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:37:19,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:37:19,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41a06dba17575946a131560ceaa3b40649c8b00d9b30bc4696c27d89715c52b3 [2021-12-28 04:37:19,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:37:19,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:37:19,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:37:19,571 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:37:19,572 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:37:19,573 INFO L432 ainManager$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 [2021-12-28 04:37:19,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a400e22/ca1982e454e44c8280fe54ebfb65173a/FLAGab4fe6472 [2021-12-28 04:37:20,288 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:37:20,288 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 [2021-12-28 04:37:20,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a400e22/ca1982e454e44c8280fe54ebfb65173a/FLAGab4fe6472 [2021-12-28 04:37:20,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a400e22/ca1982e454e44c8280fe54ebfb65173a [2021-12-28 04:37:20,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:37:20,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:37:20,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:37:20,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:37:20,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:37:20,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:37:20" (1/1) ... [2021-12-28 04:37:20,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a49d4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:20, skipping insertion in model container [2021-12-28 04:37:20,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:37:20" (1/1) ... [2021-12-28 04:37:20,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:37:20,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:37:21,861 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] [2021-12-28 04:37:21,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:37:21,945 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:37:22,219 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] [2021-12-28 04:37:22,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:37:22,322 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:37:22,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22 WrapperNode [2021-12-28 04:37:22,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:37:22,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:37:22,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:37:22,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:37:22,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,558 INFO L137 Inliner]: procedures = 267, calls = 2813, calls flagged for inlining = 120, calls inlined = 111, statements flattened = 6192 [2021-12-28 04:37:22,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:37:22,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:37:22,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:37:22,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:37:22,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:37:22,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:37:22,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:37:22,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:37:22,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (1/1) ... [2021-12-28 04:37:22,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:37:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:37:22,768 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) [2021-12-28 04:37:22,831 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 [2021-12-28 04:37:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-28 04:37:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-28 04:37:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-28 04:37:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-28 04:37:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-28 04:37:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-28 04:37:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_kick_command_queue [2021-12-28 04:37:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_kick_command_queue [2021-12-28 04:37:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:37:22,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:37:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:37:22,840 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:37:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_flush_input_fifo [2021-12-28 04:37:22,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_flush_input_fifo [2021-12-28 04:37:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:37:22,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:37:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-28 04:37:22,840 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-28 04:37:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_config [2021-12-28 04:37:22,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_config [2021-12-28 04:37:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-28 04:37:22,841 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-28 04:37:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-28 04:37:22,841 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-28 04:37:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-12-28 04:37:22,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-12-28 04:37:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:37:22,842 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:37:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-28 04:37:22,842 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-28 04:37:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:37:22,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:37:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-28 04:37:22,842 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-28 04:37:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:37:22,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:37:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_status_work [2021-12-28 04:37:22,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_status_work [2021-12-28 04:37:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_cancel_work [2021-12-28 04:37:22,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_cancel_work [2021-12-28 04:37:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:37:22,844 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 04:37:22,844 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 04:37:22,844 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-28 04:37:22,844 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-28 04:37:22,844 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-12-28 04:37:22,844 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-12-28 04:37:22,844 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_get_kref [2021-12-28 04:37:22,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_get_kref [2021-12-28 04:37:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:37:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-28 04:37:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-28 04:37:22,845 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-28 04:37:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2021-12-28 04:37:22,845 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2021-12-28 04:37:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_cancel_work [2021-12-28 04:37:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_cancel_work [2021-12-28 04:37:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:37:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2021-12-28 04:37:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2021-12-28 04:37:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:37:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_cancel_work [2021-12-28 04:37:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_cancel_work [2021-12-28 04:37:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-28 04:37:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-28 04:37:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 04:37:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 04:37:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:37:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:37:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_do_callback [2021-12-28 04:37:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_do_callback [2021-12-28 04:37:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_requeue_work [2021-12-28 04:37:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_requeue_work [2021-12-28 04:37:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 04:37:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 04:37:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_45 [2021-12-28 04:37:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_45 [2021-12-28 04:37:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_44 [2021-12-28 04:37:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_44 [2021-12-28 04:37:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-28 04:37:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-28 04:37:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_43 [2021-12-28 04:37:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_43 [2021-12-28 04:37:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-28 04:37:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-28 04:37:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-28 04:37:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-28 04:37:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_found_controller [2021-12-28 04:37:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_found_controller [2021-12-28 04:37:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_setup_controller [2021-12-28 04:37:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_setup_controller [2021-12-28 04:37:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_gone_away [2021-12-28 04:37:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_gone_away [2021-12-28 04:37:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_config [2021-12-28 04:37:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_config [2021-12-28 04:37:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_respond_work [2021-12-28 04:37:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_respond_work [2021-12-28 04:37:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:37:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_requeue_work [2021-12-28 04:37:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_requeue_work [2021-12-28 04:37:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-28 04:37:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-28 04:37:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-28 04:37:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-28 04:37:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:37:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-28 04:37:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-28 04:37:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_reg [2021-12-28 04:37:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_reg [2021-12-28 04:37:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_disconnect [2021-12-28 04:37:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_disconnect [2021-12-28 04:37:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_respond_queue_work [2021-12-28 04:37:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_respond_queue_work [2021-12-28 04:37:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write [2021-12-28 04:37:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write [2021-12-28 04:37:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 04:37:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 04:37:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-28 04:37:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-28 04:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_completions [2021-12-28 04:37:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_completions [2021-12-28 04:37:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-28 04:37:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-28 04:37:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:37:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 04:37:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 04:37:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:37:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:37:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_command_work [2021-12-28 04:37:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_command_work [2021-12-28 04:37:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:37:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:37:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_put_kref [2021-12-28 04:37:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_put_kref [2021-12-28 04:37:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_targets [2021-12-28 04:37:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_targets [2021-12-28 04:37:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:37:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_pcimem [2021-12-28 04:37:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_pcimem [2021-12-28 04:37:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:37:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:37:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-28 04:37:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-28 04:37:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:37:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-28 04:37:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-28 04:37:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:37:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_requeue_work [2021-12-28 04:37:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_requeue_work [2021-12-28 04:37:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:37:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:37:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_queue_work [2021-12-28 04:37:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_queue_work [2021-12-28 04:37:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 04:37:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 04:37:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_pcimem [2021-12-28 04:37:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_pcimem [2021-12-28 04:37:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-28 04:37:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-28 04:37:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-28 04:37:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-28 04:37:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-28 04:37:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-28 04:37:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 04:37:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 04:37:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-28 04:37:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-28 04:37:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_reg [2021-12-28 04:37:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_reg [2021-12-28 04:37:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-12-28 04:37:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-12-28 04:37:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:37:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:37:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:37:23,477 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:37:23,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:37:25,335 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:37:32,332 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:37:32,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:37:32,346 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:37:32,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:37:32 BoogieIcfgContainer [2021-12-28 04:37:32,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:37:32,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:37:32,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:37:32,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:37:32,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:37:20" (1/3) ... [2021-12-28 04:37:32,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e530210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:37:32, skipping insertion in model container [2021-12-28 04:37:32,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:22" (2/3) ... [2021-12-28 04:37:32,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e530210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:37:32, skipping insertion in model container [2021-12-28 04:37:32,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:37:32" (3/3) ... [2021-12-28 04:37:32,354 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-12-28 04:37:32,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:37:32,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:37:32,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:37:32,397 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 [2021-12-28 04:37:32,397 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:37:32,429 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) [2021-12-28 04:37:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 04:37:32,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:32,437 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] [2021-12-28 04:37:32,438 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash -83664043, now seen corresponding path program 1 times [2021-12-28 04:37:32,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:32,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465531508] [2021-12-28 04:37:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:32,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:37:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:37:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:37:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:37:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:37:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:37:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 04:37:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 04:37:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-28 04:37:32,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:32,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465531508] [2021-12-28 04:37:32,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465531508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:32,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:32,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:37:32,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747991434] [2021-12-28 04:37:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:32,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:37:32,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:37:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:37:32,988 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) [2021-12-28 04:37:34,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:41,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:43,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:37:52,395 INFO L93 Difference]: Finished difference Result 3426 states and 5410 transitions. [2021-12-28 04:37:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:37:52,396 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 [2021-12-28 04:37:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:37:52,415 INFO L225 Difference]: With dead ends: 3426 [2021-12-28 04:37:52,416 INFO L226 Difference]: Without dead ends: 1848 [2021-12-28 04:37:52,428 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 [2021-12-28 04:37:52,430 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 873 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 1142 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1142 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:37:52,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 5068 Invalid, 3364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1142 Valid, 2220 Invalid, 2 Unknown, 0 Unchecked, 19.1s Time] [2021-12-28 04:37:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-12-28 04:37:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1549. [2021-12-28 04:37:52,569 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) [2021-12-28 04:37:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2306 transitions. [2021-12-28 04:37:52,584 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2306 transitions. Word has length 126 [2021-12-28 04:37:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:37:52,585 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2306 transitions. [2021-12-28 04:37:52,585 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) [2021-12-28 04:37:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2306 transitions. [2021-12-28 04:37:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 04:37:52,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:52,593 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] [2021-12-28 04:37:52,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:37:52,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash 956425439, now seen corresponding path program 1 times [2021-12-28 04:37:52,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:52,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765431671] [2021-12-28 04:37:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:52,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:37:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:37:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:37:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:37:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:37:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:37:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 04:37:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 04:37:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-28 04:37:52,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:52,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765431671] [2021-12-28 04:37:52,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765431671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:52,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:52,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:37:52,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304565257] [2021-12-28 04:37:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:52,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:37:52,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:37:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:37:52,949 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) [2021-12-28 04:37:54,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:56,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:57,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:01,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:05,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:09,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:38:13,529 INFO L93 Difference]: Finished difference Result 5015 states and 7818 transitions. [2021-12-28 04:38:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:38:13,530 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 [2021-12-28 04:38:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:38:13,550 INFO L225 Difference]: With dead ends: 5015 [2021-12-28 04:38:13,551 INFO L226 Difference]: Without dead ends: 3495 [2021-12-28 04:38:13,561 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 [2021-12-28 04:38:13,562 INFO L933 BasicCegarLoop]: 2456 mSDtfsCounter, 4641 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 3606 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 5348 SdHoareTripleChecker+Invalid, 5740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3606 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:38:13,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4929 Valid, 5348 Invalid, 5740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3606 Valid, 2132 Invalid, 2 Unknown, 0 Unchecked, 20.2s Time] [2021-12-28 04:38:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2021-12-28 04:38:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 2899. [2021-12-28 04:38:13,672 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) [2021-12-28 04:38:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4329 transitions. [2021-12-28 04:38:13,687 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4329 transitions. Word has length 126 [2021-12-28 04:38:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:38:13,687 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 4329 transitions. [2021-12-28 04:38:13,687 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) [2021-12-28 04:38:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4329 transitions. [2021-12-28 04:38:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 04:38:13,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:38:13,689 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] [2021-12-28 04:38:13,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:38:13,690 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:38:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:38:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2036529676, now seen corresponding path program 1 times [2021-12-28 04:38:13,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:38:13,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393977415] [2021-12-28 04:38:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:38:13,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:38:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:38:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:38:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:38:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:38:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:38:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:38:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:38:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 04:38:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 04:38:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-28 04:38:13,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:38:13,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393977415] [2021-12-28 04:38:13,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393977415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:38:13,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:38:13,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:38:13,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905959518] [2021-12-28 04:38:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:38:13,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:38:13,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:38:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:38:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:38:13,948 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) [2021-12-28 04:38:15,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:18,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:38:21,775 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 []