/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:45:50,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:45:50,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:45:50,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:45:50,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:45:50,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:45:50,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:45:50,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:45:50,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:45:50,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:45:50,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:45:50,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:45:50,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:45:50,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:45:50,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:45:50,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:45:50,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:45:50,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:45:50,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:45:50,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:45:50,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:45:50,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:45:50,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:45:50,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:45:50,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 19:45:50,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 19:45:50,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 19:45:50,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 19:45:50,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 19:45:50,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 19:45:50,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:45:50,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:45:50,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:45:50,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:45:50,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:45:50,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:45:50,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:45:50,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:45:50,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:45:50,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:45:50,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:45:50,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 19:45:50,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:45:50,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:45:50,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:45:50,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:45:50,240 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:45:50,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:45:50,240 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:45:50,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:45:50,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:45:50,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:45:50,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:45:50,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:45:50,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:45:50,242 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:45:50,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:45:50,245 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:45:50,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:45:50,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:45:50,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:45:50,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:45:50,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:45:50,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:45:50,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:45:50,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:45:50,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:45:50,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:45:50,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:45:50,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:45:50,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:45:50,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:45:50,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:45:50,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:45:50,535 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:45:50,535 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:45:50,536 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2019-11-06 19:45:50,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd19d2329/bd8e6d4f06ea452ba6be338a78907763/FLAGac78128e6 [2019-11-06 19:45:51,401 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:45:51,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2019-11-06 19:45:51,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd19d2329/bd8e6d4f06ea452ba6be338a78907763/FLAGac78128e6 [2019-11-06 19:45:51,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd19d2329/bd8e6d4f06ea452ba6be338a78907763 [2019-11-06 19:45:51,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:45:51,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:45:51,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:45:51,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:45:51,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:45:51,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:45:51" (1/1) ... [2019-11-06 19:45:51,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e879d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:51, skipping insertion in model container [2019-11-06 19:45:51,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:45:51" (1/1) ... [2019-11-06 19:45:51,947 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:45:52,069 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:45:53,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:45:53,473 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:45:53,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:45:53,880 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:45:53,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53 WrapperNode [2019-11-06 19:45:53,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:45:53,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:45:53,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:45:53,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:45:53,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... [2019-11-06 19:45:53,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... [2019-11-06 19:45:53,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... [2019-11-06 19:45:53,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... [2019-11-06 19:45:54,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... [2019-11-06 19:45:54,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... [2019-11-06 19:45:54,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... [2019-11-06 19:45:54,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:45:54,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:45:54,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:45:54,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:45:54,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:45:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:45:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:45:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-06 19:45:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2019-11-06 19:45:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2019-11-06 19:45:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2019-11-06 19:45:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2019-11-06 19:45:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2019-11-06 19:45:54,294 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-11-06 19:45:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-11-06 19:45:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2019-11-06 19:45:54,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 19:45:54,296 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 19:45:54,297 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-06 19:45:54,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 19:45:54,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 19:45:54,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 19:45:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 19:45:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 19:45:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 19:45:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 19:45:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 19:45:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-06 19:45:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-11-06 19:45:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2019-11-06 19:45:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2019-11-06 19:45:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2019-11-06 19:45:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2019-11-06 19:45:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2019-11-06 19:45:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2019-11-06 19:45:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2019-11-06 19:45:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2019-11-06 19:45:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2019-11-06 19:45:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2019-11-06 19:45:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2019-11-06 19:45:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2019-11-06 19:45:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2019-11-06 19:45:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2019-11-06 19:45:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2019-11-06 19:45:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2019-11-06 19:45:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:45:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_2 [2019-11-06 19:45:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_3 [2019-11-06 19:45:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_4 [2019-11-06 19:45:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2019-11-06 19:45:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-11-06 19:45:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-11-06 19:45:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-11-06 19:45:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-11-06 19:45:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-11-06 19:45:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-11-06 19:45:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-11-06 19:45:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-11-06 19:45:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-11-06 19:45:54,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-11-06 19:45:54,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-11-06 19:45:54,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-11-06 19:45:54,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-11-06 19:45:54,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-11-06 19:45:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-11-06 19:45:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 19:45:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-11-06 19:45:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-11-06 19:45:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-11-06 19:45:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2019-11-06 19:45:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2019-11-06 19:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2019-11-06 19:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-11-06 19:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2019-11-06 19:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2019-11-06 19:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 19:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 19:45:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2019-11-06 19:45:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2019-11-06 19:45:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-11-06 19:45:54,312 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2019-11-06 19:45:54,312 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-11-06 19:45:54,312 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 19:45:54,312 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 19:45:54,312 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 19:45:54,312 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-06 19:45:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:45:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 19:45:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 19:45:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-11-06 19:45:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-11-06 19:45:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-11-06 19:45:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2019-11-06 19:45:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2019-11-06 19:45:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2019-11-06 19:45:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2019-11-06 19:45:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-06 19:45:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2019-11-06 19:45:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2019-11-06 19:45:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-06 19:45:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2019-11-06 19:45:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-11-06 19:45:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-11-06 19:45:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2019-11-06 19:45:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2019-11-06 19:45:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_2 [2019-11-06 19:45:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2019-11-06 19:45:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_3 [2019-11-06 19:45:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_4 [2019-11-06 19:45:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2019-11-06 19:45:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2019-11-06 19:45:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 19:45:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 19:45:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 19:45:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 19:45:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-06 19:45:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 19:45:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 19:45:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:45:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 19:45:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 19:45:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 19:45:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 19:45:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 19:45:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 19:45:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 19:45:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 19:45:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 19:45:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 19:45:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 19:45:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-06 19:45:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2019-11-06 19:45:54,328 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2019-11-06 19:45:54,328 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2019-11-06 19:45:54,328 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2019-11-06 19:45:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2019-11-06 19:45:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-11-06 19:45:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-11-06 19:45:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-11-06 19:45:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-11-06 19:45:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2019-11-06 19:45:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2019-11-06 19:45:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2019-11-06 19:45:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2019-11-06 19:45:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2019-11-06 19:45:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2019-11-06 19:45:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2019-11-06 19:45:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2019-11-06 19:45:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2019-11-06 19:45:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2019-11-06 19:45:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 19:45:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 19:45:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 19:45:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 19:45:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 19:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 19:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2019-11-06 19:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2019-11-06 19:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2019-11-06 19:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 19:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 19:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2019-11-06 19:45:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-11-06 19:45:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-11-06 19:45:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-11-06 19:45:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-11-06 19:45:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-11-06 19:45:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-11-06 19:45:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-11-06 19:45:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-11-06 19:45:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-06 19:45:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-11-06 19:45:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-11-06 19:45:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-11-06 19:45:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-11-06 19:45:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-11-06 19:45:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-11-06 19:45:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-11-06 19:45:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 19:45:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 19:45:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:45:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 19:45:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-06 19:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-06 19:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-06 19:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-06 19:45:55,180 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 19:45:57,582 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2019-11-06 19:45:57,900 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:45:57,901 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:45:57,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:57 BoogieIcfgContainer [2019-11-06 19:45:57,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:45:57,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:45:57,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:45:57,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:45:57,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:45:51" (1/3) ... [2019-11-06 19:45:57,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc1ca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:57, skipping insertion in model container [2019-11-06 19:45:57,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:53" (2/3) ... [2019-11-06 19:45:57,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc1ca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:57, skipping insertion in model container [2019-11-06 19:45:57,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:57" (3/3) ... [2019-11-06 19:45:57,915 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2019-11-06 19:45:57,925 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:45:57,939 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:45:57,951 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:45:57,988 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:45:57,989 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:45:57,989 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:45:57,989 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:45:57,989 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:45:57,989 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:45:57,989 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:45:57,989 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:45:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states. [2019-11-06 19:45:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-06 19:45:58,040 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:45:58,041 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:45:58,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:45:58,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:45:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash 352217831, now seen corresponding path program 1 times [2019-11-06 19:45:58,060 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:45:58,061 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720701427] [2019-11-06 19:45:58,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:45:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:00,570 WARN L191 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 556 [2019-11-06 19:46:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:46:00,666 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720701427] [2019-11-06 19:46:00,667 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:46:00,667 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 19:46:00,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285092727] [2019-11-06 19:46:00,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:46:00,673 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:46:00,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:46:00,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:46:00,690 INFO L87 Difference]: Start difference. First operand 602 states. Second operand 5 states. [2019-11-06 19:46:05,813 WARN L191 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 558 [2019-11-06 19:46:16,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:46:16,176 INFO L93 Difference]: Finished difference Result 1363 states and 1956 transitions. [2019-11-06 19:46:16,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:46:16,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-06 19:46:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:46:16,202 INFO L225 Difference]: With dead ends: 1363 [2019-11-06 19:46:16,203 INFO L226 Difference]: Without dead ends: 808 [2019-11-06 19:46:16,214 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:46:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2019-11-06 19:46:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 595. [2019-11-06 19:46:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-06 19:46:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 820 transitions. [2019-11-06 19:46:16,466 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 820 transitions. Word has length 26 [2019-11-06 19:46:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:46:16,467 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 820 transitions. [2019-11-06 19:46:16,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:46:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 820 transitions. [2019-11-06 19:46:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-06 19:46:16,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:46:16,471 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:46:16,471 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:46:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:46:16,472 INFO L82 PathProgramCache]: Analyzing trace with hash 597532555, now seen corresponding path program 1 times [2019-11-06 19:46:16,472 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:46:16,472 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789479943] [2019-11-06 19:46:16,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:46:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:18,305 WARN L191 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 556 [2019-11-06 19:46:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:46:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:46:18,597 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789479943] [2019-11-06 19:46:18,598 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:46:18,598 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:46:18,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31225818] [2019-11-06 19:46:18,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 19:46:18,607 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:46:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 19:46:18,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:46:18,608 INFO L87 Difference]: Start difference. First operand 595 states and 820 transitions. Second operand 7 states. [2019-11-06 19:46:20,188 WARN L191 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 559 [2019-11-06 19:46:26,705 WARN L191 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 561