/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:31:08,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:31:08,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:31:08,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:31:08,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:31:08,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:31:08,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:31:08,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:31:08,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:31:08,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:31:08,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:31:08,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:31:08,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:31:08,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:31:08,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:31:08,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:31:08,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:31:08,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:31:08,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:31:08,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:31:08,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:31:08,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:31:08,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:31:08,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:31:08,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:31:08,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:31:08,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:31:08,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:31:08,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:31:08,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:31:08,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:31:08,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:31:08,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:31:08,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:31:08,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:31:08,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:31:08,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:31:08,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:31:08,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:31:08,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:31:08,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:31:08,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-19 06:31:08,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:31:08,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:31:08,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:31:08,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:31:08,810 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:31:08,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:31:08,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:31:08,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:31:08,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:31:08,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:31:08,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:31:08,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:31:08,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:31:08,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:31:08,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:31:08,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:31:08,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:31:08,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:31:08,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:31:08,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:31:08,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:31:08,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:31:08,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:31:08,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:31:08,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:31:08,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:31:08,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 06:31:08,815 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:31:09,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:31:09,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:31:09,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:31:09,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:31:09,129 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:31:09,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 06:31:09,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2adbbd57/b9f1863808794173a0190a4826d0204a/FLAG2e67efddd [2020-08-19 06:31:09,956 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:31:09,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 06:31:09,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2adbbd57/b9f1863808794173a0190a4826d0204a/FLAG2e67efddd [2020-08-19 06:31:10,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2adbbd57/b9f1863808794173a0190a4826d0204a [2020-08-19 06:31:10,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:31:10,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:31:10,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:31:10,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:31:10,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:31:10,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:31:10" (1/1) ... [2020-08-19 06:31:10,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b92f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:10, skipping insertion in model container [2020-08-19 06:31:10,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:31:10" (1/1) ... [2020-08-19 06:31:10,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:31:10,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:31:12,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:31:12,157 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:31:12,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:31:12,491 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:31:12,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12 WrapperNode [2020-08-19 06:31:12,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:31:12,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:31:12,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:31:12,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:31:12,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... [2020-08-19 06:31:12,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... [2020-08-19 06:31:12,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... [2020-08-19 06:31:12,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... [2020-08-19 06:31:12,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... [2020-08-19 06:31:12,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... [2020-08-19 06:31:12,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... [2020-08-19 06:31:12,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:31:12,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:31:12,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:31:12,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:31:12,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:31:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:31:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:31:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-19 06:31:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-19 06:31:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-19 06:31:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-19 06:31:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-19 06:31:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-19 06:31:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 06:31:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 06:31:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 06:31:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 06:31:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-19 06:31:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-19 06:31:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-19 06:31:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 06:31:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-19 06:31:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:31:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 06:31:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 06:31:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 06:31:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 06:31:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 06:31:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 06:31:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 06:31:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 06:31:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 06:31:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-19 06:31:12,796 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-19 06:31:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-19 06:31:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-19 06:31:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-19 06:31:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-19 06:31:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-19 06:31:12,798 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-19 06:31:12,798 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-19 06:31:12,798 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-19 06:31:12,798 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-19 06:31:12,798 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-19 06:31:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-19 06:31:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-19 06:31:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-19 06:31:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-19 06:31:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-19 06:31:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:31:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 06:31:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 06:31:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 06:31:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 06:31:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 06:31:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-19 06:31:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-19 06:31:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 06:31:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 06:31:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 06:31:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 06:31:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 06:31:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 06:31:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 06:31:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 06:31:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 06:31:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 06:31:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 06:31:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 06:31:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 06:31:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 06:31:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 06:31:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 06:31:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 06:31:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 06:31:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-19 06:31:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-19 06:31:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 06:31:12,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-19 06:31:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-19 06:31:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 06:31:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-19 06:31:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 06:31:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 06:31:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 06:31:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-19 06:31:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-19 06:31:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-19 06:31:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-19 06:31:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-19 06:31:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-19 06:31:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-19 06:31:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-19 06:31:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-19 06:31:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-19 06:31:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-19 06:31:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-19 06:31:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-19 06:31:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-19 06:31:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 06:31:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 06:31:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 06:31:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 06:31:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-19 06:31:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 06:31:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 06:31:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:31:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 06:31:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 06:31:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 06:31:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 06:31:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 06:31:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 06:31:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-19 06:31:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 06:31:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:31:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 06:31:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-19 06:31:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-19 06:31:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:31:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-19 06:31:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 06:31:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 06:31:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 06:31:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 06:31:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-19 06:31:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-19 06:31:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 06:31:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:31:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 06:31:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:31:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 06:31:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:31:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:31:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 06:31:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:31:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 06:31:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 06:31:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 06:31:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 06:31:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 06:31:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 06:31:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 06:31:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-19 06:31:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-19 06:31:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 06:31:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 06:31:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-19 06:31:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-19 06:31:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-19 06:31:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-19 06:31:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-19 06:31:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-19 06:31:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-19 06:31:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-19 06:31:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-19 06:31:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-19 06:31:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-19 06:31:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-19 06:31:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-19 06:31:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-19 06:31:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-19 06:31:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-19 06:31:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-19 06:31:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-19 06:31:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-19 06:31:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-19 06:31:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-19 06:31:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-19 06:31:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-19 06:31:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-19 06:31:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-19 06:31:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-19 06:31:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-19 06:31:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:31:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-19 06:31:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-19 06:31:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-19 06:31:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-19 06:31:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:31:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-19 06:31:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-19 06:31:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-19 06:31:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 06:31:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 06:31:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 06:31:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:31:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 06:31:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 06:31:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 06:31:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 06:31:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 06:31:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 06:31:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 06:31:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 06:31:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 06:31:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 06:31:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 06:31:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 06:31:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 06:31:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 06:31:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 06:31:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 06:31:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:31:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 06:31:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:31:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 06:31:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:31:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-19 06:31:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:31:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-19 06:31:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-19 06:31:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-19 06:31:13,481 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 06:31:15,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:31:15,613 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 06:31:15,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:31:15 BoogieIcfgContainer [2020-08-19 06:31:15,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:31:15,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:31:15,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:31:15,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:31:15,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:31:10" (1/3) ... [2020-08-19 06:31:15,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a61720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:31:15, skipping insertion in model container [2020-08-19 06:31:15,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:12" (2/3) ... [2020-08-19 06:31:15,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a61720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:31:15, skipping insertion in model container [2020-08-19 06:31:15,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:31:15" (3/3) ... [2020-08-19 06:31:15,628 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 06:31:15,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:31:15,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:31:15,661 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:31:15,687 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:31:15,687 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:31:15,687 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:31:15,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:31:15,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:31:15,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:31:15,688 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:31:15,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:31:15,720 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-19 06:31:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 06:31:15,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:15,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:15,735 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-19 06:31:15,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:15,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745370369] [2020-08-19 06:31:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,519 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:31:16,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 06:31:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 06:31:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:31:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:31:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 06:31:16,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745370369] [2020-08-19 06:31:16,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:31:16,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 06:31:16,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727233433] [2020-08-19 06:31:16,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:31:16,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:31:16,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:31:16,786 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-19 06:31:20,773 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:31:21,072 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 06:31:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:26,219 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-19 06:31:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:31:26,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-19 06:31:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:26,242 INFO L225 Difference]: With dead ends: 1218 [2020-08-19 06:31:26,243 INFO L226 Difference]: Without dead ends: 705 [2020-08-19 06:31:26,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-08-19 06:31:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-19 06:31:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-19 06:31:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-19 06:31:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-19 06:31:26,412 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-19 06:31:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:26,413 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-19 06:31:26,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:31:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-19 06:31:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-19 06:31:26,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:26,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:26,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:31:26,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:26,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-19 06:31:26,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:26,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019163303] [2020-08-19 06:31:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,803 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:31:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 06:31:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:31:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:31:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:31:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 06:31:27,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019163303] [2020-08-19 06:31:27,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:31:27,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:31:27,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588310032] [2020-08-19 06:31:27,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:31:27,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:27,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:31:27,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:31:27,036 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-19 06:31:32,432 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:31:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:38,339 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-19 06:31:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:31:38,346 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-19 06:31:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:38,356 INFO L225 Difference]: With dead ends: 1183 [2020-08-19 06:31:38,356 INFO L226 Difference]: Without dead ends: 706 [2020-08-19 06:31:38,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:31:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-19 06:31:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-19 06:31:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-19 06:31:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-19 06:31:38,462 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-19 06:31:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:38,462 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-19 06:31:38,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:31:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-19 06:31:38,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 06:31:38,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:38,467 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:38,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:31:38,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:38,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:38,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-19 06:31:38,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:38,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920016385] [2020-08-19 06:31:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,871 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:31:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:38,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 06:31:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:39,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:31:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:39,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:31:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 06:31:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 06:31:39,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920016385] [2020-08-19 06:31:39,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:31:39,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 06:31:39,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851341749] [2020-08-19 06:31:39,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:31:39,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:39,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:31:39,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:31:39,084 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-19 06:31:43,596 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:31:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:31:49,380 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-19 06:31:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:31:49,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-19 06:31:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:31:49,388 INFO L225 Difference]: With dead ends: 1185 [2020-08-19 06:31:49,388 INFO L226 Difference]: Without dead ends: 707 [2020-08-19 06:31:49,390 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 [2020-08-19 06:31:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-19 06:31:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-19 06:31:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-19 06:31:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-19 06:31:49,504 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-19 06:31:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:31:49,504 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-19 06:31:49,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:31:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-19 06:31:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-19 06:31:49,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:31:49,507 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:31:49,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:31:49,508 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:31:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:31:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-19 06:31:49,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:31:49,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664176822] [2020-08-19 06:31:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:31:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:49,911 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:31:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:31:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:31:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:31:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 06:31:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:31:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 06:31:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:31:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:31:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:31:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:31:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 06:31:50,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664176822] [2020-08-19 06:31:50,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:31:50,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:31:50,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976432463] [2020-08-19 06:31:50,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:31:50,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:31:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:31:50,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:31:50,125 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-19 06:31:55,636 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:32:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:32:02,253 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-19 06:32:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:32:02,256 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-19 06:32:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:32:02,261 INFO L225 Difference]: With dead ends: 1187 [2020-08-19 06:32:02,261 INFO L226 Difference]: Without dead ends: 708 [2020-08-19 06:32:02,263 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 [2020-08-19 06:32:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-19 06:32:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-19 06:32:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-19 06:32:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-19 06:32:02,343 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-19 06:32:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:32:02,343 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-19 06:32:02,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:32:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-19 06:32:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 06:32:02,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:32:02,346 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:32:02,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:32:02,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:32:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:32:02,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-19 06:32:02,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:32:02,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777813057] [2020-08-19 06:32:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:32:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,760 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:32:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:32:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:32:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:32:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:32:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:32:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 06:32:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:32:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 06:32:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:32:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:32:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:32:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:32:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-19 06:32:02,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777813057] [2020-08-19 06:32:02,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:32:02,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:32:02,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858939422] [2020-08-19 06:32:02,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:32:02,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:32:02,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:32:02,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:32:02,898 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-19 06:32:07,149 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 210