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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:19:09,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:19:09,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:19:09,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:19:09,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:19:09,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:19:09,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:19:10,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:19:10,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:19:10,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:19:10,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:19:10,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:19:10,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:19:10,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:19:10,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:19:10,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:19:10,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:19:10,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:19:10,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:19:10,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:19:10,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:19:10,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:19:10,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:19:10,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:19:10,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:19:10,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:19:10,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:19:10,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:19:10,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:19:10,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:19:10,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:19:10,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:19:10,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:19:10,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:19:10,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:19:10,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:19:10,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:19:10,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:19:10,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:19:10,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:19:10,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:19:10,061 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 [2019-10-13 22:19:10,093 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:19:10,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:19:10,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:19:10,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:19:10,095 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:19:10,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:19:10,095 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:19:10,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:19:10,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:19:10,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:19:10,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:19:10,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:19:10,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:19:10,100 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:19:10,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:19:10,101 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:19:10,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:19:10,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:19:10,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:19:10,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:19:10,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:19:10,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:19:10,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:19:10,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:19:10,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:19:10,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:19:10,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:19:10,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:19:10,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:19:10,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:19:10,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:19:10,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:19:10,385 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:19:10,385 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:19:10,386 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-10-13 22:19:10,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820a5e75c/0a0e2eedbf7748dcab91f9cc8777d0a5/FLAG765d86bd9 [2019-10-13 22:19:11,282 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:19:11,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-10-13 22:19:11,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820a5e75c/0a0e2eedbf7748dcab91f9cc8777d0a5/FLAG765d86bd9 [2019-10-13 22:19:11,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820a5e75c/0a0e2eedbf7748dcab91f9cc8777d0a5 [2019-10-13 22:19:11,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:19:11,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:19:11,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:19:11,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:19:11,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:19:11,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:11" (1/1) ... [2019-10-13 22:19:11,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6063a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:11, skipping insertion in model container [2019-10-13 22:19:11,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:11" (1/1) ... [2019-10-13 22:19:11,827 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:19:11,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:19:13,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:19:13,305 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:19:13,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:19:13,689 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:19:13,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13 WrapperNode [2019-10-13 22:19:13,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:19:13,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:19:13,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:19:13,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:19:13,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (1/1) ... [2019-10-13 22:19:13,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (1/1) ... [2019-10-13 22:19:13,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (1/1) ... [2019-10-13 22:19:13,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (1/1) ... [2019-10-13 22:19:13,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (1/1) ... [2019-10-13 22:19:13,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (1/1) ... [2019-10-13 22:19:13,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (1/1) ... [2019-10-13 22:19:13,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:19:13,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:19:13,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:19:13,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:19:13,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (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 [2019-10-13 22:19:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:19:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:19:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:19:14,093 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:19:14,093 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:19:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-13 22:19:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:19:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:19:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:19:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:19:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:19:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:19:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:19:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:19:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:19:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2019-10-13 22:19:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-13 22:19:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_cmd [2019-10-13 22:19:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_bind [2019-10-13 22:19:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_unbind [2019-10-13 22:19:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_rx_fixup [2019-10-13 22:19:14,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_tx_fixup [2019-10-13 22:19:14,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_init [2019-10-13 22:19:14,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_exit [2019-10-13 22:19:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2019-10-13 22:19:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-13 22:19:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:19:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 22:19:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 22:19:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 22:19:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 22:19:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 22:19:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2019-10-13 22:19:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2019-10-13 22:19:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2019-10-13 22:19:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 22:19:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 22:19:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 22:19:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 22:19:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 22:19:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 22:19:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 22:19:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 22:19:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 22:19:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 22:19:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:19:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 22:19:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 22:19:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 22:19:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 22:19:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 22:19:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:19:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2019-10-13 22:19:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-13 22:19:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 22:19:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-10-13 22:19:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2019-10-13 22:19:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 22:19:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 22:19:14,111 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 22:19:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-10-13 22:19:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2019-10-13 22:19:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 22:19:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 22:19:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2019-10-13 22:19:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-10-13 22:19:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2019-10-13 22:19:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-10-13 22:19:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-10-13 22:19:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2019-10-13 22:19:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-10-13 22:19:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:19:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:19:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 22:19:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:19:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:19:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:19:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:19:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 22:19:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-10-13 22:19:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:19:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:19:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:19:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:19:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:19:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 22:19:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-13 22:19:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 22:19:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 22:19:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 22:19:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 22:19:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 22:19:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2019-10-13 22:19:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2019-10-13 22:19:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 22:19:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 22:19:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 22:19:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-13 22:19:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:19:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-10-13 22:19:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 22:19:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 22:19:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:19:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:19:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:19:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:19:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:19:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:19:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:19:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:19:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:19:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:19:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:19:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:19:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:19:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:19:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:19:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2019-10-13 22:19:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-13 22:19:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2019-10-13 22:19:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2019-10-13 22:19:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 22:19:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2019-10-13 22:19:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 22:19:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2019-10-13 22:19:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2019-10-13 22:19:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2019-10-13 22:19:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-13 22:19:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:19:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:19:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-10-13 22:19:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-10-13 22:19:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-10-13 22:19:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-10-13 22:19:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2019-10-13 22:19:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2019-10-13 22:19:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_cmd [2019-10-13 22:19:14,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:19:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:19:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:19:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:19:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_bind [2019-10-13 22:19:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_unbind [2019-10-13 22:19:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_rx_fixup [2019-10-13 22:19:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_tx_fixup [2019-10-13 22:19:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_init [2019-10-13 22:19:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_exit [2019-10-13 22:19:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-10-13 22:19:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:19:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:19:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:19:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 22:19:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 22:19:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 22:19:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:19:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 22:19:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 22:19:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 22:19:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 22:19:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 22:19:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 22:19:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 22:19:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 22:19:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 22:19:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 22:19:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 22:19:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:19:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:19:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:19:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:19:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:19:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:19:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:19:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:19:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:19:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:19:14,939 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:19:18,274 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:19:18,274 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:19:18,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:18 BoogieIcfgContainer [2019-10-13 22:19:18,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:19:18,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:19:18,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:19:18,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:19:18,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:11" (1/3) ... [2019-10-13 22:19:18,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118d899d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:18, skipping insertion in model container [2019-10-13 22:19:18,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:13" (2/3) ... [2019-10-13 22:19:18,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118d899d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:18, skipping insertion in model container [2019-10-13 22:19:18,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:18" (3/3) ... [2019-10-13 22:19:18,287 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-10-13 22:19:18,296 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:19:18,310 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:19:18,321 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:19:18,359 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:19:18,359 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:19:18,359 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:19:18,359 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:19:18,360 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:19:18,360 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:19:18,360 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:19:18,360 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:19:18,386 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states. [2019-10-13 22:19:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 22:19:18,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:18,403 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:19:18,407 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 708915959, now seen corresponding path program 1 times [2019-10-13 22:19:18,425 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:18,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104342508] [2019-10-13 22:19:18,427 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:18,427 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:18,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 22:19:18,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104342508] [2019-10-13 22:19:19,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:19,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:19,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289902762] [2019-10-13 22:19:19,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:19,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:19,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:19,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:19,023 INFO L87 Difference]: Start difference. First operand 361 states. Second operand 3 states. [2019-10-13 22:19:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:19,484 INFO L93 Difference]: Finished difference Result 968 states and 1280 transitions. [2019-10-13 22:19:19,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:19,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 22:19:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:19,519 INFO L225 Difference]: With dead ends: 968 [2019-10-13 22:19:19,520 INFO L226 Difference]: Without dead ends: 617 [2019-10-13 22:19:19,533 INFO L600 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 [2019-10-13 22:19:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-13 22:19:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2019-10-13 22:19:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-10-13 22:19:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 801 transitions. [2019-10-13 22:19:19,756 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 801 transitions. Word has length 53 [2019-10-13 22:19:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:19,757 INFO L462 AbstractCegarLoop]: Abstraction has 617 states and 801 transitions. [2019-10-13 22:19:19,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 801 transitions. [2019-10-13 22:19:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-13 22:19:19,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:19,771 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:19:19,772 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:19,774 INFO L82 PathProgramCache]: Analyzing trace with hash 135869433, now seen corresponding path program 1 times [2019-10-13 22:19:19,775 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:19,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829903428] [2019-10-13 22:19:19,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:19,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:19,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 22:19:20,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829903428] [2019-10-13 22:19:20,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:20,062 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:19:20,062 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518544315] [2019-10-13 22:19:20,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:19:20,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:20,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:19:20,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:19:20,071 INFO L87 Difference]: Start difference. First operand 617 states and 801 transitions. Second operand 6 states. [2019-10-13 22:19:20,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:20,832 INFO L93 Difference]: Finished difference Result 1218 states and 1593 transitions. [2019-10-13 22:19:20,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:19:20,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-10-13 22:19:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:20,842 INFO L225 Difference]: With dead ends: 1218 [2019-10-13 22:19:20,843 INFO L226 Difference]: Without dead ends: 1197 [2019-10-13 22:19:20,844 INFO L600 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 [2019-10-13 22:19:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2019-10-13 22:19:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2019-10-13 22:19:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-10-13 22:19:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1570 transitions. [2019-10-13 22:19:20,936 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1570 transitions. Word has length 67 [2019-10-13 22:19:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:20,937 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 1570 transitions. [2019-10-13 22:19:20,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:19:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1570 transitions. [2019-10-13 22:19:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 22:19:20,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:20,948 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-13 22:19:20,949 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:20,950 INFO L82 PathProgramCache]: Analyzing trace with hash 619420607, now seen corresponding path program 1 times [2019-10-13 22:19:20,950 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:20,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064607728] [2019-10-13 22:19:20,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:20,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:20,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 22:19:21,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064607728] [2019-10-13 22:19:21,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:21,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:21,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674609032] [2019-10-13 22:19:21,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:21,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:21,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:21,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:21,114 INFO L87 Difference]: Start difference. First operand 1197 states and 1570 transitions. Second operand 3 states. [2019-10-13 22:19:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:21,231 INFO L93 Difference]: Finished difference Result 2659 states and 3487 transitions. [2019-10-13 22:19:21,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:21,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-10-13 22:19:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:21,240 INFO L225 Difference]: With dead ends: 2659 [2019-10-13 22:19:21,240 INFO L226 Difference]: Without dead ends: 1482 [2019-10-13 22:19:21,244 INFO L600 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 [2019-10-13 22:19:21,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2019-10-13 22:19:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1461. [2019-10-13 22:19:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2019-10-13 22:19:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1916 transitions. [2019-10-13 22:19:21,311 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1916 transitions. Word has length 106 [2019-10-13 22:19:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:21,312 INFO L462 AbstractCegarLoop]: Abstraction has 1461 states and 1916 transitions. [2019-10-13 22:19:21,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1916 transitions. [2019-10-13 22:19:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 22:19:21,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:21,318 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2019-10-13 22:19:21,318 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:21,318 INFO L82 PathProgramCache]: Analyzing trace with hash -397243396, now seen corresponding path program 1 times [2019-10-13 22:19:21,319 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:21,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510516528] [2019-10-13 22:19:21,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:21,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:21,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 22:19:21,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510516528] [2019-10-13 22:19:21,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:21,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:21,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955188924] [2019-10-13 22:19:21,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:21,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:21,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:21,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:21,537 INFO L87 Difference]: Start difference. First operand 1461 states and 1916 transitions. Second operand 3 states. [2019-10-13 22:19:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:22,933 INFO L93 Difference]: Finished difference Result 3675 states and 4813 transitions. [2019-10-13 22:19:22,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:22,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-10-13 22:19:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:22,950 INFO L225 Difference]: With dead ends: 3675 [2019-10-13 22:19:22,950 INFO L226 Difference]: Without dead ends: 2242 [2019-10-13 22:19:22,959 INFO L600 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 [2019-10-13 22:19:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2019-10-13 22:19:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2221. [2019-10-13 22:19:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2019-10-13 22:19:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2880 transitions. [2019-10-13 22:19:23,066 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2880 transitions. Word has length 157 [2019-10-13 22:19:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:23,067 INFO L462 AbstractCegarLoop]: Abstraction has 2221 states and 2880 transitions. [2019-10-13 22:19:23,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2880 transitions. [2019-10-13 22:19:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 22:19:23,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:23,073 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2019-10-13 22:19:23,073 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:23,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1288270035, now seen corresponding path program 1 times [2019-10-13 22:19:23,074 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:23,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614952093] [2019-10-13 22:19:23,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:23,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:23,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 22:19:23,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614952093] [2019-10-13 22:19:23,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:23,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:19:23,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62035792] [2019-10-13 22:19:23,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:19:23,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:23,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:19:23,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:19:23,275 INFO L87 Difference]: Start difference. First operand 2221 states and 2880 transitions. Second operand 5 states. [2019-10-13 22:19:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:23,381 INFO L93 Difference]: Finished difference Result 4468 states and 5849 transitions. [2019-10-13 22:19:23,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:19:23,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-13 22:19:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:23,396 INFO L225 Difference]: With dead ends: 4468 [2019-10-13 22:19:23,397 INFO L226 Difference]: Without dead ends: 2275 [2019-10-13 22:19:23,404 INFO L600 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 [2019-10-13 22:19:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2019-10-13 22:19:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2261. [2019-10-13 22:19:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2019-10-13 22:19:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2930 transitions. [2019-10-13 22:19:23,531 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2930 transitions. Word has length 144 [2019-10-13 22:19:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:23,532 INFO L462 AbstractCegarLoop]: Abstraction has 2261 states and 2930 transitions. [2019-10-13 22:19:23,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:19:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2930 transitions. [2019-10-13 22:19:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 22:19:23,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:23,543 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 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] [2019-10-13 22:19:23,546 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:23,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:23,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1056262520, now seen corresponding path program 1 times [2019-10-13 22:19:23,548 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:23,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903221795] [2019-10-13 22:19:23,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:23,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:23,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 22:19:23,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903221795] [2019-10-13 22:19:23,809 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:23,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:19:23,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976481049] [2019-10-13 22:19:23,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:19:23,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:23,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:19:23,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:19:23,811 INFO L87 Difference]: Start difference. First operand 2261 states and 2930 transitions. Second operand 4 states. [2019-10-13 22:19:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:23,923 INFO L93 Difference]: Finished difference Result 4502 states and 5840 transitions. [2019-10-13 22:19:23,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:19:23,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-13 22:19:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:23,937 INFO L225 Difference]: With dead ends: 4502 [2019-10-13 22:19:23,937 INFO L226 Difference]: Without dead ends: 2262 [2019-10-13 22:19:23,944 INFO L600 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 [2019-10-13 22:19:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2019-10-13 22:19:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2262. [2019-10-13 22:19:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-13 22:19:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2931 transitions. [2019-10-13 22:19:24,057 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2931 transitions. Word has length 148 [2019-10-13 22:19:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:24,058 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 2931 transitions. [2019-10-13 22:19:24,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:19:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2931 transitions. [2019-10-13 22:19:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 22:19:24,065 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:24,065 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 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] [2019-10-13 22:19:24,065 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1615211683, now seen corresponding path program 1 times [2019-10-13 22:19:24,066 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:24,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570419430] [2019-10-13 22:19:24,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:24,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:24,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 22:19:24,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570419430] [2019-10-13 22:19:24,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863441796] [2019-10-13 22:19:24,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:19:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:24,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 22:19:24,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:19:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 22:19:24,823 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:19:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 22:19:25,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927161638] [2019-10-13 22:19:25,086 INFO L162 IcfgInterpreter]: Started Sifa with 131 locations of interest [2019-10-13 22:19:25,086 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:19:25,093 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:19:25,100 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:19:25,101 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs