/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 22:41:38,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:41:38,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:41:38,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:41:38,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:41:38,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:41:38,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:41:38,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:41:38,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:41:38,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:41:38,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:41:38,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:41:38,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:41:38,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:41:38,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:41:38,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:41:38,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:41:38,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:41:38,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:41:38,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:41:38,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:41:38,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:41:38,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:41:38,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:41:38,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:41:38,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:41:38,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:41:38,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:41:38,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:41:38,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:41:38,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:41:38,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:41:38,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:41:38,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:41:38,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:41:38,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:41:38,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:41:38,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:41:38,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:41:38,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:41:38,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:41:38,143 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 [2020-08-21 22:41:38,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:41:38,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:41:38,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:41:38,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:41:38,183 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:41:38,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:41:38,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:41:38,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:41:38,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:41:38,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:41:38,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:41:38,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:41:38,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:41:38,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:41:38,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:41:38,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:41:38,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:41:38,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:41:38,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:41:38,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:41:38,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:41:38,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:41:38,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:41:38,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:41:38,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:41:38,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:41:38,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 22:41:38,189 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:41:38,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:41:38,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:41:38,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:41:38,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:41:38,507 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:41:38,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-21 22:41:38,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d18c2d828/78180232865f42df9c2098c24219afca/FLAG6342b1548 [2020-08-21 22:41:39,342 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:41:39,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-21 22:41:39,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d18c2d828/78180232865f42df9c2098c24219afca/FLAG6342b1548 [2020-08-21 22:41:39,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d18c2d828/78180232865f42df9c2098c24219afca [2020-08-21 22:41:39,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:41:39,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:41:39,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:41:39,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:41:39,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:41:39,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:41:39" (1/1) ... [2020-08-21 22:41:39,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cea0b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:39, skipping insertion in model container [2020-08-21 22:41:39,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:41:39" (1/1) ... [2020-08-21 22:41:39,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:41:39,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:41:41,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:41:41,237 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:41:41,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:41:41,714 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:41:41,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41 WrapperNode [2020-08-21 22:41:41,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:41:41,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:41:41,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:41:41,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:41:41,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (1/1) ... [2020-08-21 22:41:41,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (1/1) ... [2020-08-21 22:41:41,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (1/1) ... [2020-08-21 22:41:41,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (1/1) ... [2020-08-21 22:41:41,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (1/1) ... [2020-08-21 22:41:41,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (1/1) ... [2020-08-21 22:41:41,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (1/1) ... [2020-08-21 22:41:41,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:41:41,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:41:41,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:41:41,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:41:41,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (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 [2020-08-21 22:41:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:41:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:41:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-21 22:41:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-21 22:41:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-21 22:41:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-21 22:41:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-21 22:41:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-21 22:41:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-21 22:41:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-21 22:41:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-21 22:41:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-21 22:41:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-21 22:41:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-21 22:41:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-21 22:41:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-21 22:41:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-21 22:41:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 22:41:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 22:41:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 22:41:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 22:41:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 22:41:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 22:41:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 22:41:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 22:41:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 22:41:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-21 22:41:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-21 22:41:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-21 22:41:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-21 22:41:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-21 22:41:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-21 22:41:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-21 22:41:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-21 22:41:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-21 22:41:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-21 22:41:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-21 22:41:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-21 22:41:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-21 22:41:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-21 22:41:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-21 22:41:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-21 22:41:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-21 22:41:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-21 22:41:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:41:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-21 22:41:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-21 22:41:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-21 22:41:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-21 22:41:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-21 22:41:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-21 22:41:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-21 22:41:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-21 22:41:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 22:41:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-21 22:41:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-21 22:41:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-21 22:41:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 22:41:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 22:41:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 22:41:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 22:41:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-21 22:41:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 22:41:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-21 22:41:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-21 22:41:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-21 22:41:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-21 22:41:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-21 22:41:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 22:41:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-21 22:41:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-21 22:41:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-21 22:41:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-21 22:41:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-21 22:41:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-21 22:41:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-21 22:41:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-21 22:41:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-21 22:41:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-21 22:41:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-21 22:41:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-21 22:41:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-21 22:41:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-21 22:41:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-21 22:41:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-21 22:41:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-21 22:41:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-21 22:41:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-21 22:41:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-21 22:41:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-21 22:41:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-21 22:41:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-21 22:41:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-21 22:41:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-21 22:41:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 22:41:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 22:41:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 22:41:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-21 22:41:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:41:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 22:41:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-21 22:41:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-21 22:41:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-21 22:41:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:41:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-21 22:41:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-21 22:41:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-21 22:41:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-21 22:41:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-21 22:41:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-21 22:41:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-21 22:41:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-21 22:41:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-21 22:41:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-21 22:41:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:41:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-21 22:41:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-21 22:41:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-21 22:41:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:41:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-21 22:41:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-21 22:41:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-21 22:41:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-21 22:41:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-21 22:41:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-21 22:41:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-21 22:41:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-21 22:41:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:41:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 22:41:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:41:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 22:41:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:41:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 22:41:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 22:41:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:41:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 22:41:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 22:41:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 22:41:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 22:41:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 22:41:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 22:41:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 22:41:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-21 22:41:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-21 22:41:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-21 22:41:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-21 22:41:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-21 22:41:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-21 22:41:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-21 22:41:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-21 22:41:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-21 22:41:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-21 22:41:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-21 22:41:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-21 22:41:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-21 22:41:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-21 22:41:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-21 22:41:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-21 22:41:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-21 22:41:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-21 22:41:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-21 22:41:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-21 22:41:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-21 22:41:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-21 22:41:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-21 22:41:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-21 22:41:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-21 22:41:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-21 22:41:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-21 22:41:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-21 22:41:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-21 22:41:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-21 22:41:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-21 22:41:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:41:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-21 22:41:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-21 22:41:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-21 22:41:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-21 22:41:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:41:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-21 22:41:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-21 22:41:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-21 22:41:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-21 22:41:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 22:41:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 22:41:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:41:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 22:41:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 22:41:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 22:41:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-21 22:41:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-21 22:41:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-21 22:41:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-21 22:41:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-21 22:41:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 22:41:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:41:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 22:41:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:41:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 22:41:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:41:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-21 22:41:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:41:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-21 22:41:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-21 22:41:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-21 22:41:42,591 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 22:41:44,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:41:44,993 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 22:41:45,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:41:45 BoogieIcfgContainer [2020-08-21 22:41:45,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:41:45,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:41:45,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:41:45,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:41:45,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:41:39" (1/3) ... [2020-08-21 22:41:45,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641ebb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:41:45, skipping insertion in model container [2020-08-21 22:41:45,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:41" (2/3) ... [2020-08-21 22:41:45,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641ebb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:41:45, skipping insertion in model container [2020-08-21 22:41:45,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:41:45" (3/3) ... [2020-08-21 22:41:45,015 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 [2020-08-21 22:41:45,029 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:41:45,041 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:41:45,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:41:45,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:41:45,096 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:41:45,096 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:41:45,096 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:41:45,096 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:41:45,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:41:45,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:41:45,097 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:41:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-21 22:41:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 22:41:45,143 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:41:45,144 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] [2020-08-21 22:41:45,145 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:41:45,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:41:45,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-21 22:41:45,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:41:45,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840084631] [2020-08-21 22:41:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:41:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,166 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 22:41:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:41:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:41:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:41:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:41:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:41:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:41:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 22:41:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:41:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:41:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:41:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 22:41:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 22:41:46,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840084631] [2020-08-21 22:41:46,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:41:46,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 22:41:46,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773182390] [2020-08-21 22:41:46,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:41:46,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:41:46,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:41:46,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:41:46,530 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-21 22:41:51,195 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:41:51,561 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 22:41:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:41:57,045 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-21 22:41:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:41:57,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-21 22:41:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:41:57,073 INFO L225 Difference]: With dead ends: 1218 [2020-08-21 22:41:57,073 INFO L226 Difference]: Without dead ends: 705 [2020-08-21 22:41:57,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:41:57,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-21 22:41:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-21 22:41:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-21 22:41:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-21 22:41:57,264 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-21 22:41:57,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:41:57,265 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-21 22:41:57,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:41:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-21 22:41:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-21 22:41:57,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:41:57,271 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] [2020-08-21 22:41:57,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:41:57,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:41:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:41:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-21 22:41:57,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:41:57,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512805121] [2020-08-21 22:41:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:41:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,684 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 22:41:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:41:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:41:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:41:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:41:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:41:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:41:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:41:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:41:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:41:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:41:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 22:41:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:41:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 22:41:57,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512805121] [2020-08-21 22:41:57,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:41:57,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:41:57,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006609550] [2020-08-21 22:41:57,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:41:57,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:41:57,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:41:57,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:41:57,902 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-21 22:42:01,276 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:42:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:07,606 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-21 22:42:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 22:42:07,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-21 22:42:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:07,620 INFO L225 Difference]: With dead ends: 1183 [2020-08-21 22:42:07,620 INFO L226 Difference]: Without dead ends: 706 [2020-08-21 22:42:07,626 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 [2020-08-21 22:42:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-21 22:42:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-21 22:42:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-21 22:42:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-21 22:42:07,742 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-21 22:42:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:07,743 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-21 22:42:07,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:42:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-21 22:42:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 22:42:07,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:07,746 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] [2020-08-21 22:42:07,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:42:07,755 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:07,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-21 22:42:07,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:07,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599966558] [2020-08-21 22:42:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,180 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 22:42:08,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:42:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:42:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:42:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:42:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 22:42:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 22:42:08,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599966558] [2020-08-21 22:42:08,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:42:08,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 22:42:08,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909856768] [2020-08-21 22:42:08,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:42:08,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:08,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:42:08,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:42:08,477 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-21 22:42:15,307 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:42:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:21,377 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-21 22:42:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:42:21,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-21 22:42:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:21,385 INFO L225 Difference]: With dead ends: 1185 [2020-08-21 22:42:21,385 INFO L226 Difference]: Without dead ends: 707 [2020-08-21 22:42:21,387 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 [2020-08-21 22:42:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-21 22:42:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-21 22:42:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-21 22:42:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-21 22:42:21,491 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-21 22:42:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:21,493 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-21 22:42:21,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:42:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-21 22:42:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-21 22:42:21,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:21,497 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] [2020-08-21 22:42:21,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:42:21,497 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:21,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:21,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-21 22:42:21,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:21,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172762023] [2020-08-21 22:42:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:21,892 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 22:42:21,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:21,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:42:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:42:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:42:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:42:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:22,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:22,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:42:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 22:42:22,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172762023] [2020-08-21 22:42:22,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:42:22,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:42:22,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702085325] [2020-08-21 22:42:22,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:42:22,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:22,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:42:22,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:42:22,133 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-21 22:42:27,736 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 22:42:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:34,754 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-21 22:42:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:42:34,755 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-21 22:42:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:34,760 INFO L225 Difference]: With dead ends: 1187 [2020-08-21 22:42:34,760 INFO L226 Difference]: Without dead ends: 708 [2020-08-21 22:42:34,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-08-21 22:42:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-21 22:42:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-21 22:42:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-21 22:42:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-21 22:42:34,879 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-21 22:42:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:34,880 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-21 22:42:34,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:42:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-21 22:42:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 22:42:34,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:34,884 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] [2020-08-21 22:42:34,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:42:34,884 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-21 22:42:34,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:34,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466966653] [2020-08-21 22:42:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,280 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 22:42:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:42:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:42:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:42:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:42:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:42:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-21 22:42:35,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466966653] [2020-08-21 22:42:35,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:42:35,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:42:35,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253450752] [2020-08-21 22:42:35,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:42:35,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:35,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:42:35,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:42:35,492 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-21 22:42:41,140 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 210