/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 false -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 [2020-08-18 11:02:49,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:02:49,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:02:49,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:02:49,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:02:49,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:02:49,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:02:49,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:02:49,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:02:49,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:02:49,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:02:49,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:02:49,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:02:49,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:02:49,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:02:49,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:02:49,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:02:49,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:02:49,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:02:49,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:02:49,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:02:49,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:02:49,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:02:49,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:02:49,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:02:49,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:02:49,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:02:49,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:02:49,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:02:49,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:02:49,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:02:49,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:02:49,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:02:49,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:02:49,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:02:49,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:02:49,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:02:49,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:02:49,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:02:49,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:02:49,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:02:49,900 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 [2020-08-18 11:02:49,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:02:49,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:02:49,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:02:49,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:02:49,924 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:02:49,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:02:49,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:02:49,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:02:49,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:02:49,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:02:49,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:02:49,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:02:49,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:02:49,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:02:49,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:02:49,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:02:49,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:02:49,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:02:49,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:02:49,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:02:49,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:02:49,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:02:49,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:02:49,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:02:49,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:02:49,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:02:49,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 11:02:49,928 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 -> false [2020-08-18 11:02:50,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:02:50,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:02:50,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:02:50,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:02:50,264 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:02:50,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 11:02:50,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/580b1496a/b87ea79865f44b03ba2c7393151a866e/FLAGe0d825907 [2020-08-18 11:02:51,158 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:02:51,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 11:02:51,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/580b1496a/b87ea79865f44b03ba2c7393151a866e/FLAGe0d825907 [2020-08-18 11:02:51,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/580b1496a/b87ea79865f44b03ba2c7393151a866e [2020-08-18 11:02:51,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:02:51,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:02:51,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:02:51,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:02:51,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:02:51,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:02:51" (1/1) ... [2020-08-18 11:02:51,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b92f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:51, skipping insertion in model container [2020-08-18 11:02:51,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:02:51" (1/1) ... [2020-08-18 11:02:51,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:02:51,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:02:53,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:02:53,314 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:02:53,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:02:53,588 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:02:53,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53 WrapperNode [2020-08-18 11:02:53,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:02:53,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:02:53,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:02:53,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:02:53,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (1/1) ... [2020-08-18 11:02:53,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (1/1) ... [2020-08-18 11:02:53,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (1/1) ... [2020-08-18 11:02:53,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (1/1) ... [2020-08-18 11:02:53,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (1/1) ... [2020-08-18 11:02:53,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (1/1) ... [2020-08-18 11:02:53,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (1/1) ... [2020-08-18 11:02:53,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:02:53,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:02:53,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:02:53,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:02:53,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (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 [2020-08-18 11:02:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:02:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:02:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-18 11:02:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-18 11:02:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-18 11:02:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-18 11:02:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-18 11:02:53,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-18 11:02:53,899 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 11:02:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 11:02:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 11:02:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 11:02:53,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-18 11:02:53,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-18 11:02:53,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-18 11:02:53,903 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 11:02:53,903 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-18 11:02:53,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:02:53,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 11:02:53,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 11:02:53,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 11:02:53,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 11:02:53,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 11:02:53,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 11:02:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 11:02:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 11:02:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 11:02:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-18 11:02:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-18 11:02:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-18 11:02:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-18 11:02:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-18 11:02:53,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-18 11:02:53,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-18 11:02:53,912 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-18 11:02:53,912 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-18 11:02:53,912 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-18 11:02:53,913 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-18 11:02:53,913 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-18 11:02:53,913 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-18 11:02:53,913 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-18 11:02:53,914 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-18 11:02:53,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-18 11:02:53,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-18 11:02:53,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:02:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 11:02:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 11:02:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 11:02:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 11:02:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 11:02:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-18 11:02:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-18 11:02:53,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 11:02:53,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 11:02:53,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 11:02:53,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 11:02:53,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 11:02:53,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 11:02:53,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 11:02:53,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 11:02:53,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 11:02:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 11:02:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 11:02:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 11:02:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 11:02:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 11:02:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 11:02:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 11:02:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 11:02:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 11:02:53,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-18 11:02:53,924 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-18 11:02:53,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 11:02:53,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-18 11:02:53,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-18 11:02:53,926 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 11:02:53,927 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-18 11:02:53,927 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 11:02:53,928 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 11:02:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 11:02:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-18 11:02:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-18 11:02:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-18 11:02:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-18 11:02:53,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-18 11:02:53,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-18 11:02:53,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-18 11:02:53,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-18 11:02:53,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-18 11:02:53,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-18 11:02:53,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-18 11:02:53,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-18 11:02:53,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-18 11:02:53,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-18 11:02:53,936 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 11:02:53,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 11:02:53,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 11:02:53,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-18 11:02:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:02:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 11:02:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-18 11:02:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-18 11:02:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-18 11:02:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:02:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-18 11:02:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-18 11:02:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-18 11:02:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-18 11:02:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 11:02:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-18 11:02:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 11:02:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 11:02:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 11:02:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 11:02:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 11:02:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-18 11:02:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 11:02:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:02:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 11:02:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-18 11:02:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-18 11:02:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:02:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-18 11:02:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 11:02:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 11:02:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 11:02:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 11:02:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-18 11:02:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-18 11:02:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 11:02:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:02:53,955 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 11:02:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:02:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 11:02:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:02:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:02:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 11:02:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:02:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 11:02:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 11:02:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 11:02:53,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 11:02:53,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 11:02:53,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 11:02:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 11:02:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-18 11:02:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-18 11:02:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 11:02:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 11:02:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-18 11:02:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-18 11:02:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-18 11:02:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-18 11:02:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-18 11:02:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-18 11:02:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-18 11:02:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-18 11:02:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-18 11:02:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-18 11:02:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-18 11:02:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-18 11:02:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-18 11:02:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-18 11:02:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-18 11:02:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-18 11:02:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-18 11:02:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-18 11:02:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-18 11:02:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-18 11:02:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-18 11:02:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-18 11:02:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-18 11:02:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-18 11:02:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-18 11:02:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-18 11:02:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-18 11:02:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:02:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-18 11:02:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-18 11:02:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-18 11:02:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-18 11:02:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:02:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-18 11:02:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-18 11:02:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-18 11:02:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 11:02:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 11:02:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 11:02:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:02:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 11:02:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 11:02:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 11:02:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 11:02:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 11:02:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 11:02:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 11:02:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 11:02:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 11:02:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 11:02:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 11:02:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 11:02:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 11:02:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 11:02:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 11:02:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 11:02:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:02:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 11:02:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:02:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 11:02:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:02:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 11:02:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:02:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 11:02:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 11:02:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 11:02:54,717 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 11:02:56,793 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:02:56,794 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 11:02:56,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:02:56 BoogieIcfgContainer [2020-08-18 11:02:56,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:02:56,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:02:56,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:02:56,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:02:56,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:02:51" (1/3) ... [2020-08-18 11:02:56,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a61720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:02:56, skipping insertion in model container [2020-08-18 11:02:56,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:53" (2/3) ... [2020-08-18 11:02:56,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a61720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:02:56, skipping insertion in model container [2020-08-18 11:02:56,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:02:56" (3/3) ... [2020-08-18 11:02:56,809 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 [2020-08-18 11:02:56,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:02:56,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:02:56,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:02:56,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:02:56,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:02:56,869 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:02:56,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:02:56,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:02:56,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:02:56,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:02:56,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:02:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-18 11:02:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 11:02:56,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:02:56,914 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] [2020-08-18 11:02:56,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:02:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:02:56,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-18 11:02:56,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:02:56,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745370369] [2020-08-18 11:02:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:02:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:57,898 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:02:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:02:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:02:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:02:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:02:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:02:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:02:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:02:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:02:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:02:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:02:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 11:02:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 11:02:58,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745370369] [2020-08-18 11:02:58,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:02:58,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 11:02:58,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973671422] [2020-08-18 11:02:58,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:02:58,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:02:58,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:02:58,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:02:58,259 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-18 11:03:02,578 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:03:02,928 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 11:03:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:08,639 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-18 11:03:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:03:08,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-18 11:03:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:08,664 INFO L225 Difference]: With dead ends: 1218 [2020-08-18 11:03:08,664 INFO L226 Difference]: Without dead ends: 705 [2020-08-18 11:03:08,674 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 [2020-08-18 11:03:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-18 11:03:08,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-18 11:03:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-18 11:03:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-18 11:03:08,837 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-18 11:03:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:08,838 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-18 11:03:08,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:03:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-18 11:03:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-18 11:03:08,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:08,844 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] [2020-08-18 11:03:08,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:03:08,844 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:08,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-18 11:03:08,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:08,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018213727] [2020-08-18 11:03:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,297 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:03:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:03:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:03:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:03:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 11:03:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 11:03:09,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018213727] [2020-08-18 11:03:09,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:09,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 11:03:09,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933067609] [2020-08-18 11:03:09,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:03:09,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:09,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:03:09,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:03:09,541 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-18 11:03:13,546 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:03:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:20,019 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-18 11:03:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:03:20,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-18 11:03:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:20,029 INFO L225 Difference]: With dead ends: 1183 [2020-08-18 11:03:20,029 INFO L226 Difference]: Without dead ends: 706 [2020-08-18 11:03:20,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:03:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-18 11:03:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-18 11:03:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-18 11:03:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-18 11:03:20,178 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-18 11:03:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:20,179 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-18 11:03:20,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:03:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-18 11:03:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 11:03:20,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:20,192 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] [2020-08-18 11:03:20,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:03:20,192 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-18 11:03:20,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:20,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516967212] [2020-08-18 11:03:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,556 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:03:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:03:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:03:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:03:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 11:03:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 11:03:20,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516967212] [2020-08-18 11:03:20,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:20,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 11:03:20,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759507907] [2020-08-18 11:03:20,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:03:20,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:03:20,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:20,798 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-18 11:03:26,711 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:03:33,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:33,019 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-18 11:03:33,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:03:33,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-18 11:03:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:33,027 INFO L225 Difference]: With dead ends: 1185 [2020-08-18 11:03:33,027 INFO L226 Difference]: Without dead ends: 707 [2020-08-18 11:03:33,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-08-18 11:03:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-18 11:03:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-18 11:03:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-18 11:03:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-18 11:03:33,115 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-18 11:03:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:33,117 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-18 11:03:33,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:03:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-18 11:03:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 11:03:33,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:33,120 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] [2020-08-18 11:03:33,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:03:33,122 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:33,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:33,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-18 11:03:33,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:33,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81647916] [2020-08-18 11:03:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,570 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:03:33,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:03:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:03:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:03:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:03:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 11:03:33,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81647916] [2020-08-18 11:03:33,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:03:33,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 11:03:33,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849446303] [2020-08-18 11:03:33,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:03:33,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:03:33,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:03:33,865 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-18 11:03:39,534 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:03:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:46,930 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-18 11:03:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:03:46,934 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-18 11:03:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:46,939 INFO L225 Difference]: With dead ends: 1187 [2020-08-18 11:03:46,940 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 11:03:46,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-08-18 11:03:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 11:03:47,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-18 11:03:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-18 11:03:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-18 11:03:47,010 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-18 11:03:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:47,011 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-18 11:03:47,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:03:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-18 11:03:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 11:03:47,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:47,016 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] [2020-08-18 11:03:47,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:03:47,016 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:47,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-18 11:03:47,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:47,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824277633] [2020-08-18 11:03:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,421 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:03:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:03:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:03:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:03:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 11:03:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-18 11:03:47,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824277633] [2020-08-18 11:03:47,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:47,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:03:47,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634116423] [2020-08-18 11:03:47,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:03:47,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:47,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:03:47,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:03:47,684 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-18 11:03:51,931 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 210