/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 -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 11:51:04,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:51:04,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:51:04,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:51:04,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:51:04,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:51:04,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:51:04,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:51:04,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:51:04,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:51:04,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:51:04,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:51:04,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:51:04,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:51:04,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:51:04,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:51:04,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:51:04,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:51:04,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:51:04,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:51:04,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:51:04,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:51:04,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:51:04,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:51:04,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:51:04,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:51:04,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:51:04,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:51:04,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:51:04,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:51:04,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:51:04,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:51:04,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:51:04,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:51:04,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:51:04,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:51:04,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:51:04,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:51:04,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:51:04,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:51:04,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:51:04,679 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 11:51:04,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:51:04,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:51:04,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:51:04,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:51:04,705 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:51:04,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:51:04,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:51:04,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:51:04,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:51:04,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:51:04,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:51:04,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:51:04,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:51:04,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:51:04,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:51:04,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:51:04,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:51:04,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:51:04,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:51:04,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:51:04,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:51:04,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:51:04,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:51:04,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:51:04,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:51:04,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:51:04,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 11:51:04,710 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 [2020-08-18 11:51:04,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:51:05,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:51:05,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:51:05,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:51:05,013 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:51:05,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 11:51:05,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8910df48/f3c95b1916614325852a130b63be842e/FLAG94b58910c [2020-08-18 11:51:05,828 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:51:05,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 11:51:05,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8910df48/f3c95b1916614325852a130b63be842e/FLAG94b58910c [2020-08-18 11:51:06,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8910df48/f3c95b1916614325852a130b63be842e [2020-08-18 11:51:06,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:51:06,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:51:06,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:51:06,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:51:06,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:51:06,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:06,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794c6563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:06, skipping insertion in model container [2020-08-18 11:51:06,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:51:06" (1/1) ... [2020-08-18 11:51:06,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:51:06,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:51:08,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:51:08,075 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:51:08,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:51:08,369 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:51:08,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08 WrapperNode [2020-08-18 11:51:08,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:51:08,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:51:08,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:51:08,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:51:08,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (1/1) ... [2020-08-18 11:51:08,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (1/1) ... [2020-08-18 11:51:08,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (1/1) ... [2020-08-18 11:51:08,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (1/1) ... [2020-08-18 11:51:08,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (1/1) ... [2020-08-18 11:51:08,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (1/1) ... [2020-08-18 11:51:08,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (1/1) ... [2020-08-18 11:51:08,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:51:08,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:51:08,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:51:08,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:51:08,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (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 11:51:08,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:51:08,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:51:08,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-18 11:51:08,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-18 11:51:08,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-18 11:51:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-18 11:51:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-18 11:51:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-18 11:51:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 11:51:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 11:51:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 11:51:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 11:51:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-18 11:51:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-18 11:51:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-18 11:51:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 11:51:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-18 11:51:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:51:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 11:51:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 11:51:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 11:51:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 11:51:08,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 11:51:08,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 11:51:08,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 11:51:08,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 11:51:08,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 11:51:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-18 11:51:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-18 11:51:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-18 11:51:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-18 11:51:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-18 11:51:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-18 11:51:08,655 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-18 11:51:08,655 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-18 11:51:08,655 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-18 11:51:08,655 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-18 11:51:08,655 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-18 11:51:08,655 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-18 11:51:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-18 11:51:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-18 11:51:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-18 11:51:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-18 11:51:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-18 11:51:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:51:08,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 11:51:08,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 11:51:08,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 11:51:08,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 11:51:08,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 11:51:08,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-18 11:51:08,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-18 11:51:08,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 11:51:08,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 11:51:08,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 11:51:08,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 11:51:08,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 11:51:08,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 11:51:08,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 11:51:08,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 11:51:08,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 11:51:08,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 11:51:08,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 11:51:08,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 11:51:08,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 11:51:08,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 11:51:08,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 11:51:08,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 11:51:08,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 11:51:08,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 11:51:08,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-18 11:51:08,661 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-18 11:51:08,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 11:51:08,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-18 11:51:08,662 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-18 11:51:08,662 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 11:51:08,662 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-18 11:51:08,662 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 11:51:08,662 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 11:51:08,662 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 11:51:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-18 11:51:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-18 11:51:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-18 11:51:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-18 11:51:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-18 11:51:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-18 11:51:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-18 11:51:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-18 11:51:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-18 11:51:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-18 11:51:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-18 11:51:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-18 11:51:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-18 11:51:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-18 11:51:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 11:51:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 11:51:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 11:51:08,666 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-18 11:51:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:51:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 11:51:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-18 11:51:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-18 11:51:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-18 11:51:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:51:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-18 11:51:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-18 11:51:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-18 11:51:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-18 11:51:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 11:51:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-18 11:51:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 11:51:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 11:51:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:51:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 11:51:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 11:51:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 11:51:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 11:51:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 11:51:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 11:51:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-18 11:51:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 11:51:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:51:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 11:51:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-18 11:51:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-18 11:51:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:51:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-18 11:51:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 11:51:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 11:51:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 11:51:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 11:51:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-18 11:51:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-18 11:51:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 11:51:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:51:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 11:51:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:51:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 11:51:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:51:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:51:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 11:51:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:51:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 11:51:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 11:51:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 11:51:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 11:51:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 11:51:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 11:51:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 11:51:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-18 11:51:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-18 11:51:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 11:51:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 11:51:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-18 11:51:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-18 11:51:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-18 11:51:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-18 11:51:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-18 11:51:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-18 11:51:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-18 11:51:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-18 11:51:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-18 11:51:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-18 11:51:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-18 11:51:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-18 11:51:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-18 11:51:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-18 11:51:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-18 11:51:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-18 11:51:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-18 11:51:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-18 11:51:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-18 11:51:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-18 11:51:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-18 11:51:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-18 11:51:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-18 11:51:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-18 11:51:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-18 11:51:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-18 11:51:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-18 11:51:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:51:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-18 11:51:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-18 11:51:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-18 11:51:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-18 11:51:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:51:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-18 11:51:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-18 11:51:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-18 11:51:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 11:51:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 11:51:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 11:51:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:51:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 11:51:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 11:51:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 11:51:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 11:51:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 11:51:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 11:51:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 11:51:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 11:51:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 11:51:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 11:51:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 11:51:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 11:51:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 11:51:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 11:51:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 11:51:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 11:51:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:51:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 11:51:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:51:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 11:51:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:51:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 11:51:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:51:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 11:51:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 11:51:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 11:51:09,364 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 11:51:11,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:51:11,158 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 11:51:11,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:51:11 BoogieIcfgContainer [2020-08-18 11:51:11,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:51:11,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:51:11,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:51:11,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:51:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:51:06" (1/3) ... [2020-08-18 11:51:11,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba0155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:51:11, skipping insertion in model container [2020-08-18 11:51:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:08" (2/3) ... [2020-08-18 11:51:11,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba0155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:51:11, skipping insertion in model container [2020-08-18 11:51:11,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:51:11" (3/3) ... [2020-08-18 11:51:11,174 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 11:51:11,184 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:51:11,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:51:11,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:51:11,242 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:51:11,242 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:51:11,242 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:51:11,243 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:51:11,243 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:51:11,243 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:51:11,243 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:51:11,244 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:51:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-18 11:51:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 11:51:11,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:11,294 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 11:51:11,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:11,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-18 11:51:11,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:11,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686933531] [2020-08-18 11:51:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,151 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:51:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:51:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 11:51:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:51:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 11:51:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:12,504 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 11:51:12,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686933531] [2020-08-18 11:51:12,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:12,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 11:51:12,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839979375] [2020-08-18 11:51:12,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:51:12,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:12,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:51:12,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:51:12,533 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-18 11:51:17,973 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:51:18,277 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 11:51:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:23,638 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-18 11:51:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:51:23,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-18 11:51:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:23,671 INFO L225 Difference]: With dead ends: 1218 [2020-08-18 11:51:23,672 INFO L226 Difference]: Without dead ends: 705 [2020-08-18 11:51:23,680 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 11:51:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-18 11:51:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-18 11:51:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-18 11:51:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-18 11:51:23,845 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-18 11:51:23,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:23,846 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-18 11:51:23,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:51:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-18 11:51:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-18 11:51:23,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:23,852 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 11:51:23,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:51:23,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:23,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:23,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-18 11:51:23,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:23,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70576176] [2020-08-18 11:51:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,268 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:51:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:51:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:51:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:51:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 11:51:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:24,450 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 11:51:24,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70576176] [2020-08-18 11:51:24,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:24,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 11:51:24,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388421619] [2020-08-18 11:51:24,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:51:24,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:24,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:51:24,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:51:24,455 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-18 11:51:27,595 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:51:33,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:33,923 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-18 11:51:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:51:33,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-18 11:51:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:33,931 INFO L225 Difference]: With dead ends: 1183 [2020-08-18 11:51:33,932 INFO L226 Difference]: Without dead ends: 706 [2020-08-18 11:51:33,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:51:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-18 11:51:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-18 11:51:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-18 11:51:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-18 11:51:34,038 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-18 11:51:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:34,039 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-18 11:51:34,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:51:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-18 11:51:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 11:51:34,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:34,043 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 11:51:34,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:51:34,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:34,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-18 11:51:34,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:34,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663341827] [2020-08-18 11:51:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,409 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:51:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:51:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:51:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:51:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 11:51:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:34,608 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 11:51:34,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663341827] [2020-08-18 11:51:34,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:34,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 11:51:34,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644576464] [2020-08-18 11:51:34,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:51:34,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:34,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:51:34,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:34,611 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-18 11:51:41,367 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:51:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:47,649 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-18 11:51:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:51:47,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-18 11:51:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:47,658 INFO L225 Difference]: With dead ends: 1185 [2020-08-18 11:51:47,658 INFO L226 Difference]: Without dead ends: 707 [2020-08-18 11:51:47,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-08-18 11:51:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-18 11:51:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-18 11:51:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-18 11:51:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-18 11:51:47,768 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-18 11:51:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:47,768 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-18 11:51:47,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:51:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-18 11:51:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 11:51:47,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:47,772 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 11:51:47,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:51:47,772 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:47,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-18 11:51:47,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:47,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21267606] [2020-08-18 11:51:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,143 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:51:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:51:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:51:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:51:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:51:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,415 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 11:51:48,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21267606] [2020-08-18 11:51:48,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:48,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 11:51:48,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349042315] [2020-08-18 11:51:48,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:51:48,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:51:48,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:51:48,419 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-18 11:51:53,803 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 11:52:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:52:01,560 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-18 11:52:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:52:01,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-18 11:52:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:52:01,567 INFO L225 Difference]: With dead ends: 1187 [2020-08-18 11:52:01,567 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 11:52:01,570 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 [2020-08-18 11:52:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 11:52:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-18 11:52:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-18 11:52:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-18 11:52:01,647 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-18 11:52:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:52:01,647 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-18 11:52:01,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:52:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-18 11:52:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 11:52:01,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:52:01,650 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 11:52:01,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:52:01,650 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:52:01,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:52:01,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-18 11:52:01,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:52:01,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220771880] [2020-08-18 11:52:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:52:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,100 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 11:52:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:52:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:52:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:52:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:52:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:52:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 11:52:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:52:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:52:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:52:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:52:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 11:52:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:52:02,251 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 11:52:02,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220771880] [2020-08-18 11:52:02,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:52:02,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:52:02,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697299250] [2020-08-18 11:52:02,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:52:02,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:52:02,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:52:02,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:52:02,254 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-18 11:52:07,953 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 210