/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:51:08,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:51:08,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:51:08,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:51:08,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:51:08,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:51:08,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:51:08,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:51:08,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:51:08,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:51:08,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:51:08,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:51:08,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:51:08,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:51:08,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:51:08,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:51:08,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:51:08,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:51:08,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:51:08,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:51:08,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:51:08,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:51:08,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:51:08,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:51:08,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:51:08,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:51:08,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:51:08,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:51:08,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:51:08,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:51:08,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:51:08,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:51:08,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:51:08,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:51:08,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:51:08,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:51:08,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:51:08,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:51:08,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:51:08,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:51:08,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:51:08,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 17:51:08,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:51:08,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:51:08,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:51:08,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:51:08,627 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:51:08,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:51:08,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:51:08,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:51:08,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:51:08,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:51:08,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:51:08,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:51:08,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:51:08,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:51:08,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:51:08,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:51:08,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:51:08,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:51:08,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:51:08,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:51:08,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:51:08,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:51:08,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:51:08,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:51:08,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:51:08,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:51:08,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 17:51:08,632 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:51:08,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:51:08,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:51:08,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:51:08,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:51:08,954 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:51:08,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-21 17:51:09,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b93f86f13/462a7f2b17174e5981cd40b0918d0918/FLAGc50353831 [2020-08-21 17:51:09,867 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:51:09,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-21 17:51:09,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b93f86f13/462a7f2b17174e5981cd40b0918d0918/FLAGc50353831 [2020-08-21 17:51:10,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b93f86f13/462a7f2b17174e5981cd40b0918d0918 [2020-08-21 17:51:10,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:51:10,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:51:10,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:51:10,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:51:10,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:51:10,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:51:10" (1/1) ... [2020-08-21 17:51:10,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2437c53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:10, skipping insertion in model container [2020-08-21 17:51:10,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:51:10" (1/1) ... [2020-08-21 17:51:10,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:51:10,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:51:12,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:51:12,080 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:51:12,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:51:12,495 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:51:12,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12 WrapperNode [2020-08-21 17:51:12,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:51:12,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:51:12,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:51:12,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:51:12,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (1/1) ... [2020-08-21 17:51:12,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (1/1) ... [2020-08-21 17:51:12,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (1/1) ... [2020-08-21 17:51:12,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (1/1) ... [2020-08-21 17:51:12,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (1/1) ... [2020-08-21 17:51:12,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (1/1) ... [2020-08-21 17:51:12,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (1/1) ... [2020-08-21 17:51:12,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:51:12,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:51:12,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:51:12,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:51:12,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (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 [2020-08-21 17:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:51:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:51:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-21 17:51:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-21 17:51:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-21 17:51:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-21 17:51:12,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-21 17:51:12,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-21 17:51:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-21 17:51:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-21 17:51:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-21 17:51:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-21 17:51:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-21 17:51:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-21 17:51:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-21 17:51:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-21 17:51:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-21 17:51:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 17:51:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 17:51:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 17:51:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 17:51:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 17:51:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 17:51:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 17:51:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 17:51:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 17:51:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-21 17:51:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-21 17:51:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-21 17:51:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-21 17:51:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-21 17:51:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-21 17:51:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-21 17:51:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-21 17:51:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-21 17:51:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-21 17:51:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-21 17:51:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-21 17:51:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-21 17:51:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-21 17:51:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-21 17:51:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-21 17:51:12,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-21 17:51:12,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-21 17:51:12,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:51:12,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-21 17:51:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-21 17:51:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-21 17:51:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-21 17:51:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-21 17:51:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-21 17:51:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-21 17:51:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-21 17:51:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 17:51:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-21 17:51:12,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-21 17:51:12,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-21 17:51:12,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 17:51:12,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 17:51:12,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 17:51:12,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 17:51:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-21 17:51:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 17:51:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-21 17:51:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-21 17:51:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-21 17:51:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-21 17:51:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-21 17:51:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 17:51:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-21 17:51:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-21 17:51:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-21 17:51:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-21 17:51:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-21 17:51:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-21 17:51:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-21 17:51:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-21 17:51:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-21 17:51:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-21 17:51:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-21 17:51:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-21 17:51:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-21 17:51:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-21 17:51:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-21 17:51:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-21 17:51:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-21 17:51:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-21 17:51:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-21 17:51:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-21 17:51:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-21 17:51:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-21 17:51:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-21 17:51:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-21 17:51:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-21 17:51:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 17:51:12,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 17:51:12,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 17:51:12,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-21 17:51:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:51:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 17:51:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-21 17:51:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-21 17:51:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-21 17:51:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:51:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-21 17:51:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-21 17:51:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-21 17:51:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-21 17:51:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 17:51:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-21 17:51:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-21 17:51:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-21 17:51:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:51:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-21 17:51:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-21 17:51:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-21 17:51:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-21 17:51:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-21 17:51:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-21 17:51:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-21 17:51:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-21 17:51:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:51:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-21 17:51:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-21 17:51:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-21 17:51:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:51:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-21 17:51:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-21 17:51:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-21 17:51:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-21 17:51:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-21 17:51:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-21 17:51:12,937 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-21 17:51:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-21 17:51:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:51:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 17:51:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:51:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 17:51:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:51:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 17:51:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 17:51:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:51:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 17:51:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 17:51:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 17:51:12,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 17:51:12,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 17:51:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 17:51:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 17:51:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-21 17:51:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-21 17:51:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-21 17:51:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-21 17:51:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-21 17:51:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-21 17:51:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-21 17:51:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-21 17:51:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-21 17:51:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-21 17:51:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-21 17:51:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-21 17:51:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-21 17:51:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-21 17:51:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-21 17:51:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-21 17:51:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-21 17:51:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-21 17:51:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-21 17:51:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-21 17:51:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-21 17:51:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-21 17:51:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-21 17:51:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-21 17:51:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-21 17:51:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-21 17:51:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-21 17:51:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-21 17:51:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-21 17:51:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-21 17:51:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-21 17:51:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:51:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-21 17:51:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-21 17:51:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-21 17:51:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-21 17:51:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:51:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-21 17:51:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-21 17:51:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-21 17:51:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-21 17:51:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 17:51:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 17:51:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:51:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 17:51:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-21 17:51:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 17:51:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-21 17:51:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-21 17:51:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-21 17:51:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 17:51:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 17:51:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 17:51:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 17:51:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-21 17:51:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-21 17:51:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-21 17:51:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-21 17:51:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-21 17:51:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 17:51:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:51:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 17:51:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:51:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 17:51:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:51:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-21 17:51:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:51:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-21 17:51:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-21 17:51:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-21 17:51:13,699 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 17:51:15,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:51:15,791 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 17:51:15,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:51:15 BoogieIcfgContainer [2020-08-21 17:51:15,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:51:15,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:51:15,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:51:15,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:51:15,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:51:10" (1/3) ... [2020-08-21 17:51:15,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffd0d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:51:15, skipping insertion in model container [2020-08-21 17:51:15,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:12" (2/3) ... [2020-08-21 17:51:15,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffd0d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:51:15, skipping insertion in model container [2020-08-21 17:51:15,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:51:15" (3/3) ... [2020-08-21 17:51:15,808 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-21 17:51:15,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:51:15,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:51:15,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:51:15,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:51:15,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:51:15,869 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:51:15,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:51:15,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:51:15,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:51:15,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:51:15,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:51:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-21 17:51:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 17:51:15,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:15,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:51:15,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:15,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:15,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-21 17:51:15,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:15,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981301145] [2020-08-21 17:51:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:16,793 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 17:51:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:16,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:51:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:51:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:16,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:51:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 17:51:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:51:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:17,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:17,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:17,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:51:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 17:51:17,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981301145] [2020-08-21 17:51:17,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:51:17,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 17:51:17,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067931565] [2020-08-21 17:51:17,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:51:17,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:17,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:51:17,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:51:17,138 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-21 17:51:22,371 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 17:51:22,676 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 17:51:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:28,186 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-21 17:51:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:51:28,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-21 17:51:28,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:28,215 INFO L225 Difference]: With dead ends: 1218 [2020-08-21 17:51:28,215 INFO L226 Difference]: Without dead ends: 705 [2020-08-21 17:51:28,223 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 [2020-08-21 17:51:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-21 17:51:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-21 17:51:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-21 17:51:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-21 17:51:28,374 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-21 17:51:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:28,375 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-21 17:51:28,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:51:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-21 17:51:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-21 17:51:28,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:28,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:51:28,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:51:28,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:28,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-21 17:51:28,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:28,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712190586] [2020-08-21 17:51:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,746 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 17:51:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:51:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:51:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:51:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:51:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:51:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:51:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 17:51:28,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712190586] [2020-08-21 17:51:28,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:51:28,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:51:28,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319964319] [2020-08-21 17:51:28,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:51:28,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:51:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:51:28,984 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-21 17:51:33,443 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 17:51:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:39,256 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-21 17:51:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:51:39,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-21 17:51:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:39,264 INFO L225 Difference]: With dead ends: 1183 [2020-08-21 17:51:39,265 INFO L226 Difference]: Without dead ends: 706 [2020-08-21 17:51:39,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:51:39,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-21 17:51:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-21 17:51:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-21 17:51:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-21 17:51:39,352 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-21 17:51:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:39,352 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-21 17:51:39,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:51:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-21 17:51:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 17:51:39,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:39,356 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:51:39,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:51:39,357 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-21 17:51:39,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:39,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275277396] [2020-08-21 17:51:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,707 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 17:51:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:51:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:51:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:51:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:51:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:51:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 17:51:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 17:51:39,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275277396] [2020-08-21 17:51:39,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:51:39,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 17:51:39,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76729906] [2020-08-21 17:51:39,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:51:39,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:39,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:51:39,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:51:39,938 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-21 17:51:45,003 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 17:51:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:51,059 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-21 17:51:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:51:51,061 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-21 17:51:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:51,071 INFO L225 Difference]: With dead ends: 1185 [2020-08-21 17:51:51,071 INFO L226 Difference]: Without dead ends: 707 [2020-08-21 17:51:51,073 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 [2020-08-21 17:51:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-21 17:51:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-21 17:51:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-21 17:51:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-21 17:51:51,173 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-21 17:51:51,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:51,175 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-21 17:51:51,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:51:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-21 17:51:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-21 17:51:51,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:51,179 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:51:51,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:51:51,179 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:51,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-21 17:51:51,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:51,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731887426] [2020-08-21 17:51:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,554 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 17:51:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:51:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:51:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:51:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:51:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:51:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:51:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 17:51:51,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731887426] [2020-08-21 17:51:51,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:51:51,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:51:51,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628534680] [2020-08-21 17:51:51,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:51:51,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:51,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:51:51,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:51:51,785 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-21 17:51:56,641 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 17:52:03,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:52:03,782 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-21 17:52:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:52:03,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-21 17:52:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:52:03,790 INFO L225 Difference]: With dead ends: 1187 [2020-08-21 17:52:03,790 INFO L226 Difference]: Without dead ends: 708 [2020-08-21 17:52:03,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-08-21 17:52:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-21 17:52:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-21 17:52:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-21 17:52:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-21 17:52:03,875 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-21 17:52:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:52:03,876 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-21 17:52:03,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:52:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-21 17:52:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 17:52:03,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:52:03,881 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:52:03,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:52:03,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:52:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:52:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-21 17:52:03,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:52:03,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529039967] [2020-08-21 17:52:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:52:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,252 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 17:52:04,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:52:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:52:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:52:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:52:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:52:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:52:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:52:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:52:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:52:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 17:52:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-21 17:52:04,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529039967] [2020-08-21 17:52:04,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:52:04,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:52:04,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78313633] [2020-08-21 17:52:04,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:52:04,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:52:04,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:52:04,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:52:04,429 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-21 17:52:09,835 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 210