/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -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 02:28:36,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:28:36,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:28:36,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:28:36,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:28:36,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:28:36,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:28:36,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:28:36,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:28:36,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:28:36,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:28:36,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:28:36,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:28:36,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:28:36,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:28:36,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:28:36,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:28:36,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:28:36,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:28:36,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:28:36,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:28:36,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:28:36,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:28:36,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:28:36,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:28:36,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:28:36,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:28:36,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:28:36,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:28:36,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:28:36,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:28:36,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:28:36,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:28:36,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:28:36,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:28:36,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:28:36,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:28:36,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:28:36,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:28:36,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:28:36,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:28:36,449 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 02:28:36,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:28:36,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:28:36,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:28:36,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:28:36,497 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:28:36,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:28:36,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:28:36,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:28:36,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:28:36,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:28:36,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:28:36,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:28:36,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:28:36,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:28:36,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:28:36,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:28:36,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:28:36,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:28:36,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:28:36,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:28:36,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:28:36,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:28:36,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:28:36,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:28:36,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:28:36,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:28:36,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 02:28:36,503 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 02:28:36,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:28:36,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:28:36,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:28:36,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:28:36,847 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:28:36,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 02:28:36,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5f1c8ca/1a65227491b04251a4eab5261d8ceced/FLAG9139ce928 [2020-08-19 02:28:37,655 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:28:37,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-19 02:28:37,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5f1c8ca/1a65227491b04251a4eab5261d8ceced/FLAG9139ce928 [2020-08-19 02:28:37,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5f1c8ca/1a65227491b04251a4eab5261d8ceced [2020-08-19 02:28:37,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:28:37,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:28:37,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:28:37,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:28:37,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:28:37,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427c53a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37, skipping insertion in model container [2020-08-19 02:28:37,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:28:37,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:28:39,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:28:39,382 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:28:39,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:28:39,780 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:28:39,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39 WrapperNode [2020-08-19 02:28:39,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:28:39,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:28:39,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:28:39,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:28:39,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (1/1) ... [2020-08-19 02:28:39,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (1/1) ... [2020-08-19 02:28:39,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (1/1) ... [2020-08-19 02:28:39,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (1/1) ... [2020-08-19 02:28:39,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (1/1) ... [2020-08-19 02:28:39,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (1/1) ... [2020-08-19 02:28:40,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (1/1) ... [2020-08-19 02:28:40,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:28:40,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:28:40,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:28:40,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:28:40,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (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 02:28:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:28:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:28:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-19 02:28:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-19 02:28:40,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-19 02:28:40,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-19 02:28:40,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-19 02:28:40,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-19 02:28:40,131 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 02:28:40,131 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 02:28:40,131 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 02:28:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 02:28:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-19 02:28:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-19 02:28:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-19 02:28:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 02:28:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-19 02:28:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:28:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 02:28:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 02:28:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 02:28:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 02:28:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 02:28:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 02:28:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 02:28:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 02:28:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 02:28:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-19 02:28:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-19 02:28:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-19 02:28:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-19 02:28:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-19 02:28:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-19 02:28:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-19 02:28:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-19 02:28:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-19 02:28:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-19 02:28:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-19 02:28:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-19 02:28:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-19 02:28:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-19 02:28:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-19 02:28:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-19 02:28:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-19 02:28:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:28:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 02:28:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 02:28:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 02:28:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 02:28:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 02:28:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-19 02:28:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-19 02:28:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 02:28:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 02:28:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 02:28:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 02:28:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 02:28:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 02:28:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 02:28:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 02:28:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 02:28:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 02:28:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 02:28:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 02:28:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 02:28:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 02:28:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 02:28:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 02:28:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 02:28:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 02:28:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-19 02:28:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-19 02:28:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 02:28:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-19 02:28:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-19 02:28:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 02:28:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-19 02:28:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 02:28:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 02:28:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 02:28:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-19 02:28:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-19 02:28:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-19 02:28:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-19 02:28:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-19 02:28:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-19 02:28:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-19 02:28:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-19 02:28:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-19 02:28:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-19 02:28:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-19 02:28:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-19 02:28:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-19 02:28:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-19 02:28:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 02:28:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 02:28:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 02:28:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-19 02:28:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:28:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 02:28:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-19 02:28:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-19 02:28:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-19 02:28:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:28:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-19 02:28:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-19 02:28:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-19 02:28:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-19 02:28:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 02:28:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-19 02:28:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 02:28:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 02:28:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:28:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 02:28:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 02:28:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 02:28:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 02:28:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 02:28:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 02:28:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-19 02:28:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 02:28:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:28:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 02:28:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-19 02:28:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-19 02:28:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:28:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-19 02:28:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 02:28:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 02:28:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 02:28:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 02:28:40,164 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-19 02:28:40,165 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-19 02:28:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 02:28:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:28:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 02:28:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:28:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 02:28:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:28:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:28:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 02:28:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:28:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 02:28:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 02:28:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 02:28:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 02:28:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 02:28:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 02:28:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 02:28:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-19 02:28:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-19 02:28:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-19 02:28:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-19 02:28:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-19 02:28:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-19 02:28:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-19 02:28:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-19 02:28:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-19 02:28:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-19 02:28:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-19 02:28:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-19 02:28:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-19 02:28:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-19 02:28:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-19 02:28:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-19 02:28:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:28:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-19 02:28:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-19 02:28:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-19 02:28:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-19 02:28:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:28:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-19 02:28:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-19 02:28:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-19 02:28:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 02:28:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 02:28:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 02:28:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 02:28:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 02:28:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 02:28:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 02:28:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 02:28:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 02:28:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 02:28:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 02:28:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 02:28:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 02:28:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:28:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 02:28:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:28:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 02:28:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:28:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-19 02:28:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:28:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-19 02:28:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-19 02:28:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-19 02:28:40,893 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 02:28:42,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:28:42,914 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 02:28:42,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:28:42 BoogieIcfgContainer [2020-08-19 02:28:42,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:28:42,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:28:42,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:28:42,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:28:42,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:28:37" (1/3) ... [2020-08-19 02:28:42,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a064ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:28:42, skipping insertion in model container [2020-08-19 02:28:42,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:39" (2/3) ... [2020-08-19 02:28:42,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a064ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:28:42, skipping insertion in model container [2020-08-19 02:28:42,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:28:42" (3/3) ... [2020-08-19 02:28:42,931 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 02:28:42,942 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:28:42,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:28:42,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:28:42,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:28:42,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:28:42,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:28:42,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:28:42,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:28:42,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:28:42,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:28:42,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:28:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-19 02:28:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 02:28:43,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:28:43,043 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 02:28:43,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:28:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:28:43,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-19 02:28:43,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:28:43,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988870348] [2020-08-19 02:28:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:28:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:43,968 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:28:43,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:28:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:28:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:28:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 02:28:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 02:28:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:28:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:28:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 02:28:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:44,338 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 02:28:44,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988870348] [2020-08-19 02:28:44,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:28:44,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:28:44,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862330186] [2020-08-19 02:28:44,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:28:44,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:28:44,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:28:44,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:28:44,368 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-19 02:28:49,946 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 02:28:50,276 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 02:28:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:28:55,764 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-19 02:28:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:28:55,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-19 02:28:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:28:55,789 INFO L225 Difference]: With dead ends: 1218 [2020-08-19 02:28:55,790 INFO L226 Difference]: Without dead ends: 705 [2020-08-19 02:28:55,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-08-19 02:28:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-19 02:28:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-19 02:28:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-19 02:28:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-19 02:28:55,961 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-19 02:28:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:28:55,962 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-19 02:28:55,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:28:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-19 02:28:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-19 02:28:55,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:28:55,968 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 02:28:55,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:28:55,968 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:28:55,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:28:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-19 02:28:55,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:28:55,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426751524] [2020-08-19 02:28:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:28:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,357 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:28:56,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:28:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:28:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:28:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 02:28:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:28:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:28:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:28:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 02:28:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:56,656 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 02:28:56,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426751524] [2020-08-19 02:28:56,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:28:56,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:28:56,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157749606] [2020-08-19 02:28:56,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:28:56,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:28:56,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:28:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:28:56,662 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-19 02:29:00,680 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 02:29:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:29:06,808 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-19 02:29:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:29:06,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-19 02:29:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:29:06,820 INFO L225 Difference]: With dead ends: 1183 [2020-08-19 02:29:06,820 INFO L226 Difference]: Without dead ends: 706 [2020-08-19 02:29:06,824 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 02:29:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-19 02:29:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-19 02:29:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-19 02:29:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-19 02:29:06,932 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-19 02:29:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:29:06,932 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-19 02:29:06,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:29:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-19 02:29:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 02:29:06,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:29:06,936 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 02:29:06,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:29:06,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:29:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:29:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-19 02:29:06,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:29:06,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709392932] [2020-08-19 02:29:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:29:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,293 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:29:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:29:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:29:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:29:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 02:29:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:29:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:29:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:29:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 02:29:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,594 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 02:29:07,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709392932] [2020-08-19 02:29:07,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:29:07,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:29:07,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170687294] [2020-08-19 02:29:07,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:29:07,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:29:07,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:29:07,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:29:07,599 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-19 02:29:13,580 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 02:29:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:29:19,665 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-19 02:29:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:29:19,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-19 02:29:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:29:19,672 INFO L225 Difference]: With dead ends: 1185 [2020-08-19 02:29:19,673 INFO L226 Difference]: Without dead ends: 707 [2020-08-19 02:29:19,675 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 [2020-08-19 02:29:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-19 02:29:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-19 02:29:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-19 02:29:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-19 02:29:19,796 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-19 02:29:19,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:29:19,796 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-19 02:29:19,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:29:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-19 02:29:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-19 02:29:19,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:29:19,799 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 02:29:19,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:29:19,799 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:29:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:29:19,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-19 02:29:19,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:29:19,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050145493] [2020-08-19 02:29:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:29:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,124 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:29:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:29:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:29:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:29:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 02:29:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:29:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:29:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:29:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 02:29:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:20,398 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 02:29:20,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050145493] [2020-08-19 02:29:20,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:29:20,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:29:20,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437445843] [2020-08-19 02:29:20,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:29:20,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:29:20,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:29:20,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:29:20,404 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-19 02:29:25,922 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 02:29:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:29:33,228 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-19 02:29:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:29:33,231 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-19 02:29:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:29:33,236 INFO L225 Difference]: With dead ends: 1187 [2020-08-19 02:29:33,236 INFO L226 Difference]: Without dead ends: 708 [2020-08-19 02:29:33,239 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 02:29:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-19 02:29:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-19 02:29:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-19 02:29:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-19 02:29:33,311 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-19 02:29:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:29:33,312 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-19 02:29:33,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:29:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-19 02:29:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 02:29:33,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:29:33,314 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 02:29:33,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:29:33,315 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:29:33,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:29:33,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-19 02:29:33,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:29:33,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156908388] [2020-08-19 02:29:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:29:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,677 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:29:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:29:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:29:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:29:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 02:29:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:29:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:29:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:29:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 02:29:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:33,900 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 02:29:33,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156908388] [2020-08-19 02:29:33,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:29:33,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:29:33,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534101590] [2020-08-19 02:29:33,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:29:33,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:29:33,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:29:33,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:29:33,904 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-19 02:29:38,580 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 210