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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 11:02:49,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 11:02:49,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 11:02:49,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 11:02:49,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 11:02:49,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 11:02:49,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 11:02:49,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 11:02:49,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 11:02:49,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 11:02:49,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 11:02:49,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 11:02:49,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 11:02:49,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 11:02:49,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 11:02:49,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 11:02:49,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 11:02:49,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 11:02:49,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 11:02:49,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 11:02:49,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 11:02:49,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 11:02:49,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 11:02:49,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 11:02:49,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 11:02:49,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 11:02:49,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 11:02:49,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 11:02:49,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 11:02:49,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 11:02:49,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 11:02:49,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 11:02:49,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 11:02:49,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 11:02:49,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 11:02:49,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 11:02:49,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 11:02:49,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 11:02:49,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 11:02:49,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 11:02:49,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 11:02:49,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 11:02:49,403 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 11:02:49,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 11:02:49,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 11:02:49,404 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 11:02:49,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 11:02:49,405 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 11:02:49,405 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 11:02:49,406 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 11:02:49,406 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 11:02:49,406 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 11:02:49,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 11:02:49,408 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 11:02:49,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 11:02:49,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 11:02:49,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 11:02:49,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 11:02:49,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 11:02:49,410 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 11:02:49,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 11:02:49,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 11:02:49,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 11:02:49,411 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 11:02:49,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 11:02:49,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 11:02:49,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 11:02:49,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 11:02:49,412 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 11:02:49,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 11:02:49,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 11:02:49,413 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 11:02:49,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 11:02:49,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 11:02:49,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 11:02:49,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 11:02:49,490 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 11:02:49,491 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i [2019-09-10 11:02:49,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9fcad0e/78f1c63a5cb2491faacac649d3e30036/FLAG6df4fbd77 [2019-09-10 11:02:50,290 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 11:02:50,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i [2019-09-10 11:02:50,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9fcad0e/78f1c63a5cb2491faacac649d3e30036/FLAG6df4fbd77 [2019-09-10 11:02:50,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9fcad0e/78f1c63a5cb2491faacac649d3e30036 [2019-09-10 11:02:50,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 11:02:50,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 11:02:50,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 11:02:50,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 11:02:50,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 11:02:50,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:02:50" (1/1) ... [2019-09-10 11:02:50,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66015443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:50, skipping insertion in model container [2019-09-10 11:02:50,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:02:50" (1/1) ... [2019-09-10 11:02:50,426 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 11:02:50,561 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 11:02:51,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 11:02:51,934 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 11:02:52,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 11:02:52,346 INFO L192 MainTranslator]: Completed translation [2019-09-10 11:02:52,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52 WrapperNode [2019-09-10 11:02:52,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 11:02:52,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 11:02:52,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 11:02:52,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 11:02:52,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (1/1) ... [2019-09-10 11:02:52,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (1/1) ... [2019-09-10 11:02:52,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (1/1) ... [2019-09-10 11:02:52,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (1/1) ... [2019-09-10 11:02:52,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (1/1) ... [2019-09-10 11:02:52,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (1/1) ... [2019-09-10 11:02:52,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (1/1) ... [2019-09-10 11:02:52,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 11:02:52,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 11:02:52,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 11:02:52,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 11:02:52,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (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 [2019-09-10 11:02:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 11:02:52,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 11:02:52,624 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-09-10 11:02:52,624 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2019-09-10 11:02:52,624 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2019-09-10 11:02:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-09-10 11:02:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2019-09-10 11:02:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2019-09-10 11:02:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-09-10 11:02:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-09-10 11:02:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-09-10 11:02:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-09-10 11:02:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-09-10 11:02:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-09-10 11:02:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-09-10 11:02:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-09-10 11:02:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-09-10 11:02:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-09-10 11:02:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-09-10 11:02:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2019-09-10 11:02:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-09-10 11:02:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure genelink_rx_fixup [2019-09-10 11:02:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure genelink_tx_fixup [2019-09-10 11:02:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure genelink_bind [2019-09-10 11:02:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure gl620a_driver_init [2019-09-10 11:02:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure gl620a_driver_exit [2019-09-10 11:02:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2019-09-10 11:02:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-09-10 11:02:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 11:02:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-09-10 11:02:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-09-10 11:02:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-09-10 11:02:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-09-10 11:02:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-09-10 11:02:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2019-09-10 11:02:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_13 [2019-09-10 11:02:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_14 [2019-09-10 11:02:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-09-10 11:02:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-09-10 11:02:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-09-10 11:02:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-09-10 11:02:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-09-10 11:02:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-09-10 11:02:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-09-10 11:02:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-09-10 11:02:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-09-10 11:02:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-09-10 11:02:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-09-10 11:02:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-09-10 11:02:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-09-10 11:02:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-09-10 11:02:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-09-10 11:02:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-09-10 11:02:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-09-10 11:02:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2019-09-10 11:02:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2019-09-10 11:02:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2019-09-10 11:02:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-09-10 11:02:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2019-09-10 11:02:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-09-10 11:02:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-09-10 11:02:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-09-10 11:02:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-09-10 11:02:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-09-10 11:02:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-09-10 11:02:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-09-10 11:02:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-09-10 11:02:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2019-09-10 11:02:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-09-10 11:02:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-09-10 11:02:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-09-10 11:02:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-09-10 11:02:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-09-10 11:02:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-09-10 11:02:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2019-09-10 11:02:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 11:02:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-09-10 11:02:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2019-09-10 11:02:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-09-10 11:02:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2019-09-10 11:02:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-09-10 11:02:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 11:02:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-09-10 11:02:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-09-10 11:02:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-09-10 11:02:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-09-10 11:02:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-09-10 11:02:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2019-09-10 11:02:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2019-09-10 11:02:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2019-09-10 11:02:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 11:02:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2019-09-10 11:02:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-09-10 11:02:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2019-09-10 11:02:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 11:02:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2019-09-10 11:02:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-09-10 11:02:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-09-10 11:02:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-09-10 11:02:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-09-10 11:02:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-09-10 11:02:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-09-10 11:02:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-09-10 11:02:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 11:02:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 11:02:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 11:02:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-09-10 11:02:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-09-10 11:02:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 11:02:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-09-10 11:02:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 11:02:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-09-10 11:02:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-09-10 11:02:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-09-10 11:02:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-09-10 11:02:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-09-10 11:02:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-09-10 11:02:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-09-10 11:02:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-09-10 11:02:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2019-09-10 11:02:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-09-10 11:02:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2019-09-10 11:02:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2019-09-10 11:02:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-09-10 11:02:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_13 [2019-09-10 11:02:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-09-10 11:02:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_14 [2019-09-10 11:02:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-09-10 11:02:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-09-10 11:02:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-09-10 11:02:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-09-10 11:02:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-09-10 11:02:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-09-10 11:02:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2019-09-10 11:02:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure genelink_rx_fixup [2019-09-10 11:02:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 11:02:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-09-10 11:02:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 11:02:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 11:02:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure genelink_tx_fixup [2019-09-10 11:02:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2019-09-10 11:02:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure genelink_bind [2019-09-10 11:02:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure gl620a_driver_init [2019-09-10 11:02:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure gl620a_driver_exit [2019-09-10 11:02:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-09-10 11:02:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2019-09-10 11:02:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-09-10 11:02:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-09-10 11:02:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 11:02:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-09-10 11:02:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-09-10 11:02:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-09-10 11:02:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-09-10 11:02:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-09-10 11:02:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-09-10 11:02:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-09-10 11:02:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-09-10 11:02:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-09-10 11:02:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-09-10 11:02:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-09-10 11:02:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-09-10 11:02:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-09-10 11:02:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-09-10 11:02:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-09-10 11:02:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 11:02:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-09-10 11:02:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 11:02:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 11:02:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-10 11:02:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 11:02:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-09-10 11:02:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-09-10 11:02:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-09-10 11:02:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-09-10 11:02:53,229 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-09-10 11:02:54,455 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 11:02:54,455 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-10 11:02:54,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:02:54 BoogieIcfgContainer [2019-09-10 11:02:54,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 11:02:54,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 11:02:54,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 11:02:54,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 11:02:54,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:02:50" (1/3) ... [2019-09-10 11:02:54,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58697757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:02:54, skipping insertion in model container [2019-09-10 11:02:54,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:02:52" (2/3) ... [2019-09-10 11:02:54,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58697757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:02:54, skipping insertion in model container [2019-09-10 11:02:54,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:02:54" (3/3) ... [2019-09-10 11:02:54,471 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i [2019-09-10 11:02:54,484 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 11:02:54,502 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 11:02:54,524 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 11:02:54,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 11:02:54,559 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 11:02:54,559 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 11:02:54,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 11:02:54,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 11:02:54,559 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 11:02:54,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 11:02:54,560 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 11:02:54,643 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states. [2019-09-10 11:02:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 11:02:54,676 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:02:54,678 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 11:02:54,680 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:02:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:54,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1066215107, now seen corresponding path program 1 times [2019-09-10 11:02:54,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:02:54,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:54,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:02:54,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:54,776 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:02:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:02:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-10 11:02:55,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:02:55,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 11:02:55,301 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:02:55,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 11:02:55,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 11:02:55,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:02:55,332 INFO L87 Difference]: Start difference. First operand 376 states. Second operand 3 states. [2019-09-10 11:02:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:02:55,530 INFO L93 Difference]: Finished difference Result 645 states and 807 transitions. [2019-09-10 11:02:55,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 11:02:55,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 11:02:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:02:55,564 INFO L225 Difference]: With dead ends: 645 [2019-09-10 11:02:55,564 INFO L226 Difference]: Without dead ends: 628 [2019-09-10 11:02:55,571 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:02:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-09-10 11:02:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-09-10 11:02:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-09-10 11:02:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 782 transitions. [2019-09-10 11:02:55,740 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 782 transitions. Word has length 66 [2019-09-10 11:02:55,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:02:55,741 INFO L475 AbstractCegarLoop]: Abstraction has 628 states and 782 transitions. [2019-09-10 11:02:55,741 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 11:02:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 782 transitions. [2019-09-10 11:02:55,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-10 11:02:55,749 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:02:55,749 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 11:02:55,750 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:02:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:55,750 INFO L82 PathProgramCache]: Analyzing trace with hash 585963417, now seen corresponding path program 1 times [2019-09-10 11:02:55,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:02:55,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:55,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:02:55,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:55,757 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:02:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:02:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-10 11:02:56,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:02:56,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 11:02:56,032 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:02:56,034 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 11:02:56,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 11:02:56,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 11:02:56,035 INFO L87 Difference]: Start difference. First operand 628 states and 782 transitions. Second operand 6 states. [2019-09-10 11:02:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:02:56,511 INFO L93 Difference]: Finished difference Result 1232 states and 1544 transitions. [2019-09-10 11:02:56,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 11:02:56,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2019-09-10 11:02:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:02:56,535 INFO L225 Difference]: With dead ends: 1232 [2019-09-10 11:02:56,537 INFO L226 Difference]: Without dead ends: 1211 [2019-09-10 11:02:56,538 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 11:02:56,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2019-09-10 11:02:56,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2019-09-10 11:02:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2019-09-10 11:02:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1521 transitions. [2019-09-10 11:02:56,618 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1521 transitions. Word has length 82 [2019-09-10 11:02:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:02:56,628 INFO L475 AbstractCegarLoop]: Abstraction has 1211 states and 1521 transitions. [2019-09-10 11:02:56,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 11:02:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1521 transitions. [2019-09-10 11:02:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-10 11:02:56,642 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:02:56,642 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 11:02:56,642 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:02:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash 671450202, now seen corresponding path program 1 times [2019-09-10 11:02:56,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:02:56,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:56,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:02:56,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:56,654 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:02:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:02:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-09-10 11:02:56,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:02:56,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 11:02:56,971 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:02:56,973 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 11:02:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 11:02:56,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:02:56,974 INFO L87 Difference]: Start difference. First operand 1211 states and 1521 transitions. Second operand 3 states. [2019-09-10 11:02:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:02:57,055 INFO L93 Difference]: Finished difference Result 1549 states and 1959 transitions. [2019-09-10 11:02:57,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 11:02:57,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-09-10 11:02:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:02:57,067 INFO L225 Difference]: With dead ends: 1549 [2019-09-10 11:02:57,067 INFO L226 Difference]: Without dead ends: 1549 [2019-09-10 11:02:57,068 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:02:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2019-09-10 11:02:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1525. [2019-09-10 11:02:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2019-09-10 11:02:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1936 transitions. [2019-09-10 11:02:57,128 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1936 transitions. Word has length 159 [2019-09-10 11:02:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:02:57,129 INFO L475 AbstractCegarLoop]: Abstraction has 1525 states and 1936 transitions. [2019-09-10 11:02:57,129 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 11:02:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1936 transitions. [2019-09-10 11:02:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-09-10 11:02:57,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:02:57,136 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 11:02:57,137 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:02:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash -871647698, now seen corresponding path program 1 times [2019-09-10 11:02:57,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:02:57,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:57,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:02:57,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:57,141 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:02:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:02:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-09-10 11:02:57,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:02:57,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 11:02:57,372 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:02:57,372 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 11:02:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 11:02:57,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:02:57,373 INFO L87 Difference]: Start difference. First operand 1525 states and 1936 transitions. Second operand 3 states. [2019-09-10 11:02:57,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:02:57,488 INFO L93 Difference]: Finished difference Result 2589 states and 3245 transitions. [2019-09-10 11:02:57,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 11:02:57,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-09-10 11:02:57,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:02:57,503 INFO L225 Difference]: With dead ends: 2589 [2019-09-10 11:02:57,503 INFO L226 Difference]: Without dead ends: 2589 [2019-09-10 11:02:57,503 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:02:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2019-09-10 11:02:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2565. [2019-09-10 11:02:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2565 states. [2019-09-10 11:02:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3222 transitions. [2019-09-10 11:02:57,586 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3222 transitions. Word has length 194 [2019-09-10 11:02:57,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:02:57,586 INFO L475 AbstractCegarLoop]: Abstraction has 2565 states and 3222 transitions. [2019-09-10 11:02:57,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 11:02:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3222 transitions. [2019-09-10 11:02:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-09-10 11:02:57,594 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:02:57,594 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 11:02:57,594 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:02:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:57,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1042186454, now seen corresponding path program 1 times [2019-09-10 11:02:57,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:02:57,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:57,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:02:57,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:57,598 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:02:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:02:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-10 11:02:57,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:02:57,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 11:02:57,929 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:02:57,930 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 11:02:57,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 11:02:57,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 11:02:57,932 INFO L87 Difference]: Start difference. First operand 2565 states and 3222 transitions. Second operand 5 states. [2019-09-10 11:02:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:02:57,998 INFO L93 Difference]: Finished difference Result 2619 states and 3285 transitions. [2019-09-10 11:02:57,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 11:02:57,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2019-09-10 11:02:58,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:02:58,023 INFO L225 Difference]: With dead ends: 2619 [2019-09-10 11:02:58,024 INFO L226 Difference]: Without dead ends: 2619 [2019-09-10 11:02:58,024 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 11:02:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2019-09-10 11:02:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2605. [2019-09-10 11:02:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2019-09-10 11:02:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3270 transitions. [2019-09-10 11:02:58,116 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3270 transitions. Word has length 194 [2019-09-10 11:02:58,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:02:58,117 INFO L475 AbstractCegarLoop]: Abstraction has 2605 states and 3270 transitions. [2019-09-10 11:02:58,117 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 11:02:58,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3270 transitions. [2019-09-10 11:02:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-09-10 11:02:58,126 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:02:58,126 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 11:02:58,126 INFO L418 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:02:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash -338348745, now seen corresponding path program 1 times [2019-09-10 11:02:58,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:02:58,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:58,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:02:58,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:58,136 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:02:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:02:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-09-10 11:02:58,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:02:58,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 11:02:58,358 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:02:58,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 11:02:58,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 11:02:58,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 11:02:58,360 INFO L87 Difference]: Start difference. First operand 2605 states and 3270 transitions. Second operand 4 states. [2019-09-10 11:02:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:02:58,421 INFO L93 Difference]: Finished difference Result 2608 states and 3273 transitions. [2019-09-10 11:02:58,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 11:02:58,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2019-09-10 11:02:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:02:58,440 INFO L225 Difference]: With dead ends: 2608 [2019-09-10 11:02:58,440 INFO L226 Difference]: Without dead ends: 2606 [2019-09-10 11:02:58,441 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 11:02:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2019-09-10 11:02:58,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2606. [2019-09-10 11:02:58,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2606 states. [2019-09-10 11:02:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3271 transitions. [2019-09-10 11:02:58,536 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3271 transitions. Word has length 200 [2019-09-10 11:02:58,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:02:58,540 INFO L475 AbstractCegarLoop]: Abstraction has 2606 states and 3271 transitions. [2019-09-10 11:02:58,540 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 11:02:58,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3271 transitions. [2019-09-10 11:02:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-09-10 11:02:58,549 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:02:58,550 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 11:02:58,550 INFO L418 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:02:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash -986780509, now seen corresponding path program 1 times [2019-09-10 11:02:58,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:02:58,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:58,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:02:58,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:02:58,557 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:02:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:02:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-10 11:02:58,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 11:02:58,920 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 11:02:58,922 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2019-09-10 11:02:58,927 INFO L207 CegarAbsIntRunner]: [28], [29], [37], [38], [44], [45], [46], [47], [52], [53], [54], [56], [58], [59], [114], [116], [117], [123], [125], [126], [127], [129], [133], [135], [136], [157], [160], [162], [163], [166], [168], [169], [182], [186], [188], [189], [192], [193], [209], [211], [212], [217], [219], [221], [224], [226], [228], [345], [348], [351], [354], [357], [359], [363], [366], [369], [371], [374], [383], [402], [405], [408], [411], [414], [416], [426], [512], [521], [526], [538], [542], [545], [546], [601], [602], [650], [654], [667], [669], [671], [684], [686], [696], [698], [700], [704], [706], [708], [721], [722], [726], [779], [781], [783], [784], [789], [791], [796], [800], [803], [804], [806], [807], [813], [814], [817], [818], [819], [820], [829], [830], [833], [834], [835], [836], [837], [838], [841], [842], [843], [844], [855], [856], [857], [858], [859], [860], [861], [862], [863], [864], [865], [866], [881], [882], [883], [884], [885], [886], [889], [890], [905], [927], [928], [931], [932], [939], [940], [941], [942], [945], [946], [963], [964], [965], [966], [969], [970], [971], [973], [974], [975], [976], [977] [2019-09-10 11:02:58,987 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 11:02:58,987 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 11:02:59,107 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 11:02:59,109 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 103 root evaluator evaluations with a maximum evaluation depth of 0. Performed 103 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 190 variables. [2019-09-10 11:02:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:02:59,116 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 11:02:59,208 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 11:02:59,209 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 11:02:59,219 INFO L420 sIntCurrentIteration]: We unified 201 AI predicates to 201 [2019-09-10 11:02:59,219 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 11:02:59,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 11:02:59,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-10 11:02:59,220 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:02:59,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 11:02:59,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 11:02:59,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 11:02:59,222 INFO L87 Difference]: Start difference. First operand 2606 states and 3271 transitions. Second operand 2 states. [2019-09-10 11:02:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:02:59,223 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 11:02:59,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 11:02:59,223 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 202 [2019-09-10 11:02:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:02:59,224 INFO L225 Difference]: With dead ends: 2 [2019-09-10 11:02:59,224 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 11:02:59,224 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 11:02:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 11:02:59,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 11:02:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 11:02:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 11:02:59,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 202 [2019-09-10 11:02:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:02:59,226 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 11:02:59,226 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 11:02:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 11:02:59,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 11:02:59,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:02:59 BoogieIcfgContainer [2019-09-10 11:02:59,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 11:02:59,239 INFO L168 Benchmark]: Toolchain (without parser) took 8826.92 ms. Allocated memory was 131.6 MB in the beginning and 458.2 MB in the end (delta: 326.6 MB). Free memory was 79.5 MB in the beginning and 357.3 MB in the end (delta: -277.9 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2019-09-10 11:02:59,240 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-09-10 11:02:59,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1937.83 ms. Allocated memory was 131.6 MB in the beginning and 217.1 MB in the end (delta: 85.5 MB). Free memory was 79.2 MB in the beginning and 106.8 MB in the end (delta: -27.6 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2019-09-10 11:02:59,245 INFO L168 Benchmark]: Boogie Preprocessor took 206.78 ms. Allocated memory is still 217.1 MB. Free memory was 106.8 MB in the beginning and 98.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2019-09-10 11:02:59,247 INFO L168 Benchmark]: RCFGBuilder took 1902.50 ms. Allocated memory was 217.1 MB in the beginning and 267.4 MB in the end (delta: 50.3 MB). Free memory was 98.1 MB in the beginning and 68.1 MB in the end (delta: 30.0 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2019-09-10 11:02:59,249 INFO L168 Benchmark]: TraceAbstraction took 4774.57 ms. Allocated memory was 267.4 MB in the beginning and 458.2 MB in the end (delta: 190.8 MB). Free memory was 68.1 MB in the beginning and 357.3 MB in the end (delta: -289.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 11:02:59,258 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1937.83 ms. Allocated memory was 131.6 MB in the beginning and 217.1 MB in the end (delta: 85.5 MB). Free memory was 79.2 MB in the beginning and 106.8 MB in the end (delta: -27.6 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.78 ms. Allocated memory is still 217.1 MB. Free memory was 106.8 MB in the beginning and 98.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1902.50 ms. Allocated memory was 217.1 MB in the beginning and 267.4 MB in the end (delta: 50.3 MB). Free memory was 98.1 MB in the beginning and 68.1 MB in the end (delta: 30.0 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4774.57 ms. Allocated memory was 267.4 MB in the beginning and 458.2 MB in the end (delta: 190.8 MB). Free memory was 68.1 MB in the beginning and 357.3 MB in the end (delta: -289.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5634]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 75 procedures, 473 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3000 SDtfs, 1326 SDslu, 5138 SDs, 0 SdLazy, 241 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2606occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 2.1393034825870645 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 62 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1097 NumberOfCodeBlocks, 1097 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1090 ConstructedInterpolants, 0 QuantifiedInterpolants, 210507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 478/485 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...