/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:40:06,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:40:06,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:40:06,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:40:06,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:40:06,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:40:06,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:40:06,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:40:06,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:40:06,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:40:06,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:40:06,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:40:06,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:40:06,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:40:06,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:40:06,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:40:06,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:40:06,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:40:06,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:40:06,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:40:06,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:40:06,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:40:06,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:40:06,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:40:06,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:40:06,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:40:06,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:40:06,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:40:06,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:40:06,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:40:06,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:40:06,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:40:06,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:40:06,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:40:06,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:40:06,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:40:06,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:40:06,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:40:06,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:40:06,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:40:06,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:40:06,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-19 01:40:06,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:40:06,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:40:06,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:40:06,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:40:06,905 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:40:06,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:40:06,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:40:06,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:40:06,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:40:06,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:40:06,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:40:06,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:40:06,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:40:06,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:40:06,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:40:06,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:40:06,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:40:06,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:40:06,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:40:06,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:40:06,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:40:06,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:40:06,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:40:06,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:40:06,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:40:06,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:40:06,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 01:40:06,911 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:40:07,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:40:07,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:40:07,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:40:07,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:40:07,284 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:40:07,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 01:40:07,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba90f232/914b958cea634bae96cebed898ff5a32/FLAG66735bfd9 [2020-08-19 01:40:08,239 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:40:08,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 01:40:08,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba90f232/914b958cea634bae96cebed898ff5a32/FLAG66735bfd9 [2020-08-19 01:40:08,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba90f232/914b958cea634bae96cebed898ff5a32 [2020-08-19 01:40:08,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:40:08,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:40:08,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:40:08,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:40:08,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:40:08,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:40:08" (1/1) ... [2020-08-19 01:40:08,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a304747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:08, skipping insertion in model container [2020-08-19 01:40:08,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:40:08" (1/1) ... [2020-08-19 01:40:08,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:40:08,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:40:10,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:40:10,131 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:40:10,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:40:10,614 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:40:10,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10 WrapperNode [2020-08-19 01:40:10,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:40:10,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:40:10,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:40:10,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:40:10,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... [2020-08-19 01:40:10,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... [2020-08-19 01:40:10,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... [2020-08-19 01:40:10,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... [2020-08-19 01:40:10,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... [2020-08-19 01:40:10,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... [2020-08-19 01:40:10,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... [2020-08-19 01:40:10,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:40:10,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:40:10,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:40:10,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:40:10,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 01:40:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:40:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:40:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-19 01:40:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-19 01:40:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-19 01:40:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-19 01:40:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-19 01:40:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-19 01:40:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 01:40:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 01:40:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 01:40:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 01:40:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-19 01:40:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-19 01:40:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-19 01:40:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 01:40:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-19 01:40:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 01:40:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 01:40:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 01:40:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 01:40:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 01:40:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 01:40:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 01:40:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 01:40:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 01:40:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 01:40:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-19 01:40:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-19 01:40:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-19 01:40:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-19 01:40:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-19 01:40:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-19 01:40:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-19 01:40:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-19 01:40:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-19 01:40:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-19 01:40:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-19 01:40:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-19 01:40:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-19 01:40:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-19 01:40:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-19 01:40:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-19 01:40:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-19 01:40:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:40:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 01:40:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 01:40:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 01:40:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 01:40:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 01:40:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-19 01:40:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-19 01:40:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 01:40:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 01:40:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 01:40:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 01:40:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 01:40:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 01:40:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 01:40:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 01:40:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 01:40:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 01:40:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 01:40:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 01:40:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 01:40:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 01:40:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 01:40:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 01:40:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 01:40:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 01:40:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-19 01:40:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-19 01:40:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 01:40:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-19 01:40:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-19 01:40:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 01:40:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-19 01:40:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 01:40:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 01:40:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 01:40:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-19 01:40:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-19 01:40:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-19 01:40:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-19 01:40:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-19 01:40:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-19 01:40:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-19 01:40:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-19 01:40:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-19 01:40:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-19 01:40:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-19 01:40:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-19 01:40:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-19 01:40:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-19 01:40:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 01:40:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 01:40:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 01:40:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-19 01:40:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:40:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 01:40:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-19 01:40:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-19 01:40:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-19 01:40:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:40:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-19 01:40:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-19 01:40:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-19 01:40:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-19 01:40:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 01:40:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-19 01:40:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 01:40:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 01:40:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:40:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 01:40:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 01:40:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 01:40:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 01:40:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 01:40:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 01:40:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-19 01:40:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 01:40:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:40:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 01:40:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-19 01:40:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-19 01:40:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:40:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-19 01:40:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 01:40:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 01:40:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 01:40:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 01:40:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-19 01:40:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-19 01:40:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 01:40:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:40:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 01:40:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:40:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 01:40:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:40:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 01:40:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 01:40:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:40:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 01:40:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 01:40:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 01:40:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 01:40:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 01:40:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 01:40:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 01:40:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-19 01:40:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-19 01:40:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 01:40:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 01:40:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-19 01:40:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-19 01:40:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-19 01:40:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-19 01:40:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-19 01:40:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-19 01:40:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-19 01:40:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-19 01:40:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-19 01:40:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-19 01:40:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-19 01:40:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-19 01:40:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-19 01:40:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-19 01:40:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-19 01:40:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-19 01:40:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-19 01:40:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-19 01:40:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:40:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-19 01:40:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-19 01:40:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-19 01:40:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-19 01:40:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:40:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-19 01:40:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-19 01:40:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-19 01:40:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 01:40:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 01:40:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 01:40:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:40:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 01:40:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 01:40:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 01:40:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 01:40:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 01:40:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 01:40:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 01:40:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 01:40:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 01:40:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 01:40:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 01:40:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 01:40:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 01:40:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 01:40:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 01:40:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 01:40:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:40:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 01:40:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:40:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 01:40:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:40:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-19 01:40:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:40:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-19 01:40:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-19 01:40:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-19 01:40:11,584 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 01:40:13,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:40:13,512 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 01:40:13,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:40:13 BoogieIcfgContainer [2020-08-19 01:40:13,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:40:13,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:40:13,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:40:13,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:40:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:40:08" (1/3) ... [2020-08-19 01:40:13,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265807e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:40:13, skipping insertion in model container [2020-08-19 01:40:13,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:10" (2/3) ... [2020-08-19 01:40:13,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265807e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:40:13, skipping insertion in model container [2020-08-19 01:40:13,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:40:13" (3/3) ... [2020-08-19 01:40:13,528 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 01:40:13,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:40:13,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:40:13,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:40:13,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:40:13,590 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:40:13,590 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:40:13,590 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:40:13,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:40:13,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:40:13,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:40:13,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:40:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-19 01:40:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 01:40:13,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:13,638 INFO L422 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] [2020-08-19 01:40:13,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:13,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:13,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-19 01:40:13,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:13,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830451957] [2020-08-19 01:40:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,462 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 01:40:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:40:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 01:40:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:40:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 01:40:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 01:40:14,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830451957] [2020-08-19 01:40:14,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:40:14,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:40:14,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483902472] [2020-08-19 01:40:14,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:40:14,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:40:14,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:40:14,712 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-19 01:40:18,608 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 01:40:18,952 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 01:40:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:24,110 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-19 01:40:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:40:24,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-19 01:40:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:24,148 INFO L225 Difference]: With dead ends: 1218 [2020-08-19 01:40:24,148 INFO L226 Difference]: Without dead ends: 705 [2020-08-19 01:40:24,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:40:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-19 01:40:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-19 01:40:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-19 01:40:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-19 01:40:24,343 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-19 01:40:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:24,344 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-19 01:40:24,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:40:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-19 01:40:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-19 01:40:24,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:24,350 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-19 01:40:24,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:40:24,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:24,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:24,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-19 01:40:24,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:24,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506778922] [2020-08-19 01:40:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,743 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 01:40:24,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:40:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:40:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:40:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 01:40:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:40:24,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506778922] [2020-08-19 01:40:24,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:40:24,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:40:24,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037617159] [2020-08-19 01:40:24,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:40:24,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:24,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:40:24,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:40:24,956 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-19 01:40:28,361 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 01:40:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:34,164 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-19 01:40:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:40:34,177 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-19 01:40:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:34,183 INFO L225 Difference]: With dead ends: 1183 [2020-08-19 01:40:34,183 INFO L226 Difference]: Without dead ends: 706 [2020-08-19 01:40:34,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:40:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-19 01:40:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-19 01:40:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-19 01:40:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-19 01:40:34,279 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-19 01:40:34,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:34,280 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-19 01:40:34,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:40:34,280 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-19 01:40:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 01:40:34,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:34,284 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-08-19 01:40:34,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:40:34,284 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-19 01:40:34,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:34,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547522495] [2020-08-19 01:40:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,711 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 01:40:34,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:40:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:40:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:40:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 01:40:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 01:40:34,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547522495] [2020-08-19 01:40:34,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:40:34,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:40:34,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275277396] [2020-08-19 01:40:34,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:40:34,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:34,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:40:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:40:34,922 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-19 01:40:39,678 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 01:40:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:45,559 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-19 01:40:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:40:45,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-19 01:40:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:45,564 INFO L225 Difference]: With dead ends: 1185 [2020-08-19 01:40:45,564 INFO L226 Difference]: Without dead ends: 707 [2020-08-19 01:40:45,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:40:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-19 01:40:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-19 01:40:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-19 01:40:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-19 01:40:45,622 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-19 01:40:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:45,622 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-19 01:40:45,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:40:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-19 01:40:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-19 01:40:45,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:45,625 INFO L422 BasicCegarLoop]: trace histogram [6, 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] [2020-08-19 01:40:45,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:40:45,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:45,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-19 01:40:45,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:45,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386318223] [2020-08-19 01:40:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:45,939 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 01:40:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:40:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:40:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:40:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 01:40:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 01:40:46,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386318223] [2020-08-19 01:40:46,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:40:46,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:40:46,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206213377] [2020-08-19 01:40:46,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:40:46,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:46,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:40:46,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:40:46,154 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-19 01:40:51,337 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 01:40:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:57,914 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-19 01:40:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:40:57,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-19 01:40:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:57,919 INFO L225 Difference]: With dead ends: 1187 [2020-08-19 01:40:57,920 INFO L226 Difference]: Without dead ends: 708 [2020-08-19 01:40:57,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:40:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-19 01:40:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-19 01:40:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-19 01:40:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-19 01:40:57,988 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-19 01:40:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:57,988 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-19 01:40:57,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:40:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-19 01:40:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 01:40:57,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:57,990 INFO L422 BasicCegarLoop]: trace histogram [8, 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] [2020-08-19 01:40:57,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:40:57,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:57,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-19 01:40:57,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:57,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064977682] [2020-08-19 01:40:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,361 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 01:40:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:40:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:40:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:40:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:40:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-19 01:40:58,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064977682] [2020-08-19 01:40:58,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:58,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:40:58,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395594429] [2020-08-19 01:40:58,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:40:58,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:58,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:40:58,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:40:58,546 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-19 01:41:03,709 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 01:41:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:41:13,315 INFO L93 Difference]: Finished difference Result 1780 states and 2339 transitions. [2020-08-19 01:41:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 01:41:13,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-19 01:41:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:41:13,325 INFO L225 Difference]: With dead ends: 1780 [2020-08-19 01:41:13,325 INFO L226 Difference]: Without dead ends: 1313 [2020-08-19 01:41:13,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:41:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-19 01:41:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 908. [2020-08-19 01:41:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-08-19 01:41:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1108 transitions. [2020-08-19 01:41:13,449 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1108 transitions. Word has length 74 [2020-08-19 01:41:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:41:13,450 INFO L479 AbstractCegarLoop]: Abstraction has 908 states and 1108 transitions. [2020-08-19 01:41:13,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:41:13,450 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1108 transitions. [2020-08-19 01:41:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 01:41:13,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:41:13,452 INFO L422 BasicCegarLoop]: trace histogram [8, 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] [2020-08-19 01:41:13,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:41:13,453 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:41:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:41:13,453 INFO L82 PathProgramCache]: Analyzing trace with hash 531947411, now seen corresponding path program 1 times [2020-08-19 01:41:13,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:41:13,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274179296] [2020-08-19 01:41:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY