./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 ff03de63 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-ff03de6 [2021-12-21 16:52:26,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:52:26,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:52:26,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:52:26,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:52:26,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:52:26,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:52:26,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:52:26,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:52:26,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:52:26,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:52:26,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:52:26,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:52:26,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:52:26,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:52:26,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:52:26,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:52:26,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:52:26,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:52:26,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:52:26,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:52:26,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:52:26,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:52:26,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:52:26,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:52:26,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:52:26,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:52:26,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:52:26,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:52:26,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:52:26,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:52:26,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:52:26,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:52:26,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:52:26,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:52:26,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:52:26,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:52:26,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:52:26,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:52:26,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:52:26,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:52:26,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:52:26,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:52:26,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:52:26,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:52:26,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:52:26,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:52:26,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:52:26,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:52:26,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:52:26,653 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:52:26,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:52:26,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:52:26,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:52:26,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:52:26,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:52:26,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:52:26,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:52:26,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:52:26,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:52:26,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:52:26,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:52:26,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:52:26,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:52:26,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:52:26,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:52:26,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:52:26,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:52:26,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:52:26,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:52:26,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:52:26,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:52:26,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:52:26,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41a06dba17575946a131560ceaa3b40649c8b00d9b30bc4696c27d89715c52b3 [2021-12-21 16:52:26,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:52:26,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:52:26,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:52:26,894 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:52:26,894 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:52:26,895 INFO L432 ainManager$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 [2021-12-21 16:52:26,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f8b88f73/163407219b3d49db854f63d324d6a1e2/FLAGa15cb5961 [2021-12-21 16:52:27,780 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:52:27,796 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 [2021-12-21 16:52:27,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f8b88f73/163407219b3d49db854f63d324d6a1e2/FLAGa15cb5961 [2021-12-21 16:52:27,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f8b88f73/163407219b3d49db854f63d324d6a1e2 [2021-12-21 16:52:27,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:52:27,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:52:27,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:52:27,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:52:28,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:52:28,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:52:27" (1/1) ... [2021-12-21 16:52:28,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eddc1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:28, skipping insertion in model container [2021-12-21 16:52:28,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:52:27" (1/1) ... [2021-12-21 16:52:28,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:52:28,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:52:30,365 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] [2021-12-21 16:52:30,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:52:30,490 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:52:30,778 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] [2021-12-21 16:52:30,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:52:30,843 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:52:30,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30 WrapperNode [2021-12-21 16:52:30,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:52:30,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:52:30,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:52:30,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:52:30,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:30,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,128 INFO L137 Inliner]: procedures = 267, calls = 2813, calls flagged for inlining = 120, calls inlined = 111, statements flattened = 6192 [2021-12-21 16:52:31,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:52:31,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:52:31,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:52:31,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:52:31,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:52:31,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:52:31,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:52:31,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:52:31,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (1/1) ... [2021-12-21 16:52:31,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:52:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:52:31,385 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) [2021-12-21 16:52:31,403 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 [2021-12-21 16:52:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-21 16:52:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-21 16:52:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-21 16:52:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-21 16:52:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-21 16:52:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-21 16:52:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_kick_command_queue [2021-12-21 16:52:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_kick_command_queue [2021-12-21 16:52:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:52:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:52:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:52:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:52:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_flush_input_fifo [2021-12-21 16:52:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_flush_input_fifo [2021-12-21 16:52:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:52:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:52:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-21 16:52:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-21 16:52:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_config [2021-12-21 16:52:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_config [2021-12-21 16:52:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-21 16:52:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-21 16:52:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-21 16:52:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-21 16:52:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-12-21 16:52:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-12-21 16:52:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:52:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:52:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-21 16:52:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-21 16:52:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:52:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:52:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-21 16:52:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-21 16:52:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:52:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:52:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_status_work [2021-12-21 16:52:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_status_work [2021-12-21 16:52:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_cancel_work [2021-12-21 16:52:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_cancel_work [2021-12-21 16:52:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:52:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 16:52:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 16:52:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-21 16:52:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-21 16:52:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-12-21 16:52:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-12-21 16:52:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_get_kref [2021-12-21 16:52:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_get_kref [2021-12-21 16:52:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:52:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-21 16:52:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-21 16:52:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-21 16:52:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2021-12-21 16:52:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2021-12-21 16:52:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_cancel_work [2021-12-21 16:52:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_cancel_work [2021-12-21 16:52:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:52:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2021-12-21 16:52:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2021-12-21 16:52:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:52:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_cancel_work [2021-12-21 16:52:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_cancel_work [2021-12-21 16:52:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-21 16:52:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-21 16:52:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-21 16:52:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-21 16:52:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:52:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:52:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_do_callback [2021-12-21 16:52:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_do_callback [2021-12-21 16:52:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_requeue_work [2021-12-21 16:52:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_requeue_work [2021-12-21 16:52:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:52:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:52:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_45 [2021-12-21 16:52:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_45 [2021-12-21 16:52:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_44 [2021-12-21 16:52:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_44 [2021-12-21 16:52:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-21 16:52:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-21 16:52:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_43 [2021-12-21 16:52:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_43 [2021-12-21 16:52:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-21 16:52:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-21 16:52:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-21 16:52:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-21 16:52:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_found_controller [2021-12-21 16:52:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_found_controller [2021-12-21 16:52:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_setup_controller [2021-12-21 16:52:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_setup_controller [2021-12-21 16:52:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_gone_away [2021-12-21 16:52:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_gone_away [2021-12-21 16:52:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_config [2021-12-21 16:52:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_config [2021-12-21 16:52:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_respond_work [2021-12-21 16:52:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_respond_work [2021-12-21 16:52:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:52:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_requeue_work [2021-12-21 16:52:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_requeue_work [2021-12-21 16:52:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-21 16:52:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-21 16:52:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-21 16:52:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-21 16:52:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:52:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-21 16:52:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-21 16:52:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_reg [2021-12-21 16:52:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_reg [2021-12-21 16:52:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_disconnect [2021-12-21 16:52:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_disconnect [2021-12-21 16:52:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_respond_queue_work [2021-12-21 16:52:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_respond_queue_work [2021-12-21 16:52:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write [2021-12-21 16:52:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write [2021-12-21 16:52:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:52:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:52:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-21 16:52:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-21 16:52:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_completions [2021-12-21 16:52:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_completions [2021-12-21 16:52:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-21 16:52:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-21 16:52:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:52:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-21 16:52:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-21 16:52:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:52:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:52:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_command_work [2021-12-21 16:52:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_command_work [2021-12-21 16:52:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:52:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:52:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_put_kref [2021-12-21 16:52:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_put_kref [2021-12-21 16:52:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_abandon_targets [2021-12-21 16:52:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_abandon_targets [2021-12-21 16:52:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:52:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_pcimem [2021-12-21 16:52:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_pcimem [2021-12-21 16:52:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-21 16:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-21 16:52:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-21 16:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-21 16:52:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:52:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-21 16:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-21 16:52:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:52:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_requeue_work [2021-12-21 16:52:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_requeue_work [2021-12-21 16:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:52:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_queue_work [2021-12-21 16:52:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_queue_work [2021-12-21 16:52:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 16:52:31,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 16:52:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_read_pcimem [2021-12-21 16:52:31,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_read_pcimem [2021-12-21 16:52:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-21 16:52:31,492 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-21 16:52:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-21 16:52:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-21 16:52:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-21 16:52:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-21 16:52:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 16:52:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 16:52:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-21 16:52:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-21 16:52:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_write_reg [2021-12-21 16:52:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_write_reg [2021-12-21 16:52:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-12-21 16:52:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-12-21 16:52:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:52:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:52:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:52:32,089 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:52:32,094 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:52:33,949 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:52:41,794 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:52:41,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:52:41,818 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:52:41,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:52:41 BoogieIcfgContainer [2021-12-21 16:52:41,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:52:41,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:52:41,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:52:41,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:52:41,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:52:27" (1/3) ... [2021-12-21 16:52:41,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb12a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:52:41, skipping insertion in model container [2021-12-21 16:52:41,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:30" (2/3) ... [2021-12-21 16:52:41,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb12a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:52:41, skipping insertion in model container [2021-12-21 16:52:41,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:52:41" (3/3) ... [2021-12-21 16:52:41,830 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-12-21 16:52:41,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:52:41,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:52:41,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:52:41,898 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 [2021-12-21 16:52:41,898 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:52:41,946 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) [2021-12-21 16:52:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-21 16:52:41,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:52:41,956 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] [2021-12-21 16:52:41,957 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:52:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:52:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -83664043, now seen corresponding path program 1 times [2021-12-21 16:52:41,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:52:41,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093022960] [2021-12-21 16:52:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:52:41,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:52:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:52:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:52:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:52:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:52:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:52:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:52:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:52:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 16:52:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 16:52:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-21 16:52:42,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:52:42,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093022960] [2021-12-21 16:52:42,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093022960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:52:42,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:52:42,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:52:42,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321400729] [2021-12-21 16:52:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:52:42,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:52:42,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:52:42,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:52:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:52:42,783 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) [2021-12-21 16:52:44,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:52,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:53,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:56,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:58,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:53:06,329 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 [] [2021-12-21 16:53:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:53:08,092 INFO L93 Difference]: Finished difference Result 3426 states and 5410 transitions. [2021-12-21 16:53:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:53:08,094 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 [2021-12-21 16:53:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:53:08,115 INFO L225 Difference]: With dead ends: 3426 [2021-12-21 16:53:08,115 INFO L226 Difference]: Without dead ends: 1848 [2021-12-21 16:53:08,136 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 [2021-12-21 16:53:08,140 INFO L933 BasicCegarLoop]: 2167 mSDtfsCounter, 873 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 1145 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:53:08,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 5057 Invalid, 3352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1145 Valid, 2204 Invalid, 3 Unknown, 0 Unchecked, 24.9s Time] [2021-12-21 16:53:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-12-21 16:53:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1549. [2021-12-21 16:53:08,318 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) [2021-12-21 16:53:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2306 transitions. [2021-12-21 16:53:08,334 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2306 transitions. Word has length 126 [2021-12-21 16:53:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:53:08,335 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2306 transitions. [2021-12-21 16:53:08,335 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) [2021-12-21 16:53:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2306 transitions. [2021-12-21 16:53:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-21 16:53:08,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:53:08,342 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] [2021-12-21 16:53:08,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:53:08,342 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:53:08,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:53:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash 956425439, now seen corresponding path program 1 times [2021-12-21 16:53:08,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:53:08,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305182168] [2021-12-21 16:53:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:53:08,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:53:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:53:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:53:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:53:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:53:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:53:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:53:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:53:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 16:53:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 16:53:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-21 16:53:08,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:53:08,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305182168] [2021-12-21 16:53:08,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305182168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:53:08,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:53:08,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:53:08,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275964358] [2021-12-21 16:53:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:53:08,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:53:08,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:53:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:53:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:53:08,782 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) [2021-12-21 16:53:14,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:53:17,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:53:23,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:53:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:53:25,422 INFO L93 Difference]: Finished difference Result 5003 states and 7806 transitions. [2021-12-21 16:53:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:53:25,423 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 [2021-12-21 16:53:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:53:25,483 INFO L225 Difference]: With dead ends: 5003 [2021-12-21 16:53:25,484 INFO L226 Difference]: Without dead ends: 3483 [2021-12-21 16:53:25,493 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 [2021-12-21 16:53:25,494 INFO L933 BasicCegarLoop]: 2464 mSDtfsCounter, 4623 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 3593 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4909 SdHoareTripleChecker+Valid, 5583 SdHoareTripleChecker+Invalid, 5513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3593 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:53:25,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4909 Valid, 5583 Invalid, 5513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3593 Valid, 1918 Invalid, 2 Unknown, 0 Unchecked, 16.3s Time] [2021-12-21 16:53:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2021-12-21 16:53:25,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 2992. [2021-12-21 16:53:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2061 states have (on average 1.41581756428918) internal successors, (2918), 2151 states have internal predecessors, (2918), 769 states have call successors, (769), 150 states have call predecessors, (769), 161 states have return successors, (852), 747 states have call predecessors, (852), 767 states have call successors, (852) [2021-12-21 16:53:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4539 transitions. [2021-12-21 16:53:25,734 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4539 transitions. Word has length 126 [2021-12-21 16:53:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:53:25,751 INFO L470 AbstractCegarLoop]: Abstraction has 2992 states and 4539 transitions. [2021-12-21 16:53:25,752 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) [2021-12-21 16:53:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4539 transitions. [2021-12-21 16:53:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 16:53:25,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:53:25,754 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] [2021-12-21 16:53:25,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:53:25,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:53:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:53:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2036529676, now seen corresponding path program 1 times [2021-12-21 16:53:25,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:53:25,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274411522] [2021-12-21 16:53:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:53:25,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:53:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:53:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:53:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:53:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:53:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:53:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:53:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:53:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 16:53:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 16:53:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-21 16:53:26,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:53:26,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274411522] [2021-12-21 16:53:26,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274411522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:53:26,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:53:26,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:53:26,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195103112] [2021-12-21 16:53:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:53:26,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:53:26,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:53:26,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:53:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:53:26,263 INFO L87 Difference]: Start difference. First operand 2992 states and 4539 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) [2021-12-21 16:53:28,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:53:30,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:53:36,722 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 []