/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -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-c90d42b [2020-09-24 15:36:39,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:36:39,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:36:39,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:36:39,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:36:39,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:36:39,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:36:39,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:36:39,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:36:39,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:36:39,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:36:39,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:36:39,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:36:39,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:36:39,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:36:39,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:36:39,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:36:39,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:36:39,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:36:39,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:36:39,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:36:39,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:36:39,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:36:39,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:36:39,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:36:39,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:36:39,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:36:39,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:36:39,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:36:39,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:36:39,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:36:39,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:36:39,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:36:39,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:36:39,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:36:39,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:36:39,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:36:39,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:36:39,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:36:39,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:36:39,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:36:39,520 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 [2020-09-24 15:36:39,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:36:39,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:36:39,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:36:39,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:36:39,548 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:36:39,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:36:39,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:36:39,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:36:39,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:36:39,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:36:39,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:36:39,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:36:39,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:36:39,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:36:39,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:36:39,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:36:39,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:36:39,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:36:39,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:36:39,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:36:39,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:36:39,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:36:39,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:36:39,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:36:39,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:36:39,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:36:39,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-24 15:36:39,553 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:36:40,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:36:40,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:36:40,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:36:40,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:36:40,055 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:36:40,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-24 15:36:40,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/344f82b03/1f27b240cc1042af8e291d848e57ca3c/FLAGce7039c7e [2020-09-24 15:36:41,040 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:36:41,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-24 15:36:41,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/344f82b03/1f27b240cc1042af8e291d848e57ca3c/FLAGce7039c7e [2020-09-24 15:36:41,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/344f82b03/1f27b240cc1042af8e291d848e57ca3c [2020-09-24 15:36:41,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:36:41,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:36:41,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:36:41,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:36:41,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:36:41,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:36:41" (1/1) ... [2020-09-24 15:36:41,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c32aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:41, skipping insertion in model container [2020-09-24 15:36:41,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:36:41" (1/1) ... [2020-09-24 15:36:41,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:36:41,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:36:43,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:36:43,292 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:36:43,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:36:43,674 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:36:43,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43 WrapperNode [2020-09-24 15:36:43,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:36:43,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:36:43,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:36:43,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:36:43,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (1/1) ... [2020-09-24 15:36:43,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (1/1) ... [2020-09-24 15:36:43,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (1/1) ... [2020-09-24 15:36:43,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (1/1) ... [2020-09-24 15:36:43,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (1/1) ... [2020-09-24 15:36:43,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (1/1) ... [2020-09-24 15:36:43,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (1/1) ... [2020-09-24 15:36:43,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:36:43,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:36:43,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:36:43,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:36:43,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (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 [2020-09-24 15:36:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:36:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:36:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-09-24 15:36:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-09-24 15:36:44,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-09-24 15:36:44,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-09-24 15:36:44,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-09-24 15:36:44,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-09-24 15:36:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-09-24 15:36:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-24 15:36:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-09-24 15:36:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-09-24 15:36:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-09-24 15:36:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-09-24 15:36:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-09-24 15:36:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-09-24 15:36:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-09-24 15:36:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:36:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-24 15:36:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-24 15:36:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-24 15:36:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-24 15:36:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-24 15:36:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-24 15:36:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-24 15:36:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-24 15:36:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-09-24 15:36:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-09-24 15:36:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-09-24 15:36:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-09-24 15:36:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-09-24 15:36:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-09-24 15:36:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-09-24 15:36:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-09-24 15:36:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-09-24 15:36:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-09-24 15:36:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-09-24 15:36:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-09-24 15:36:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-09-24 15:36:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-09-24 15:36:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-09-24 15:36:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-09-24 15:36:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-09-24 15:36:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-09-24 15:36:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:36:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-09-24 15:36:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-09-24 15:36:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-09-24 15:36:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-09-24 15:36:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-09-24 15:36:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-09-24 15:36:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-09-24 15:36:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-09-24 15:36:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-24 15:36:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-09-24 15:36:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-09-24 15:36:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-09-24 15:36:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-24 15:36:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-24 15:36:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-24 15:36:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-24 15:36:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-09-24 15:36:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-24 15:36:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-09-24 15:36:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-09-24 15:36:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-09-24 15:36:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-09-24 15:36:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-09-24 15:36:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-24 15:36:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-09-24 15:36:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-09-24 15:36:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-09-24 15:36:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-24 15:36:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-09-24 15:36:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-09-24 15:36:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-09-24 15:36:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-09-24 15:36:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-09-24 15:36:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-09-24 15:36:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-09-24 15:36:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-09-24 15:36:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-09-24 15:36:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-09-24 15:36:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-09-24 15:36:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-09-24 15:36:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-09-24 15:36:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-09-24 15:36:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-09-24 15:36:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-09-24 15:36:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-09-24 15:36:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-09-24 15:36:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-09-24 15:36:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-09-24 15:36:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-09-24 15:36:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-24 15:36:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-24 15:36:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 15:36:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-09-24 15:36:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:36:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-24 15:36:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-09-24 15:36:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-09-24 15:36:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-09-24 15:36:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:36:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-09-24 15:36:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-09-24 15:36:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-09-24 15:36:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-09-24 15:36:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-24 15:36:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-09-24 15:36:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-09-24 15:36:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-24 15:36:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:36:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-09-24 15:36:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-09-24 15:36:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-09-24 15:36:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-09-24 15:36:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-09-24 15:36:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-09-24 15:36:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-09-24 15:36:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-09-24 15:36:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:36:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-09-24 15:36:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-09-24 15:36:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-09-24 15:36:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:36:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-09-24 15:36:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-09-24 15:36:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-09-24 15:36:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-09-24 15:36:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-09-24 15:36:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-09-24 15:36:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-09-24 15:36:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-09-24 15:36:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:36:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 15:36:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:36:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 15:36:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:36:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:36:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-24 15:36:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:36:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-24 15:36:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 15:36:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-24 15:36:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-24 15:36:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-24 15:36:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-24 15:36:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-24 15:36:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-09-24 15:36:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-09-24 15:36:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-09-24 15:36:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-09-24 15:36:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-09-24 15:36:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-09-24 15:36:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-09-24 15:36:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-09-24 15:36:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-09-24 15:36:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-09-24 15:36:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-09-24 15:36:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-09-24 15:36:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-09-24 15:36:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-09-24 15:36:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-09-24 15:36:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-09-24 15:36:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-09-24 15:36:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-09-24 15:36:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-09-24 15:36:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-09-24 15:36:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-09-24 15:36:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-09-24 15:36:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-09-24 15:36:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-09-24 15:36:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-09-24 15:36:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-09-24 15:36:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-09-24 15:36:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-09-24 15:36:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-09-24 15:36:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-09-24 15:36:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-09-24 15:36:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:36:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-09-24 15:36:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-09-24 15:36:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-09-24 15:36:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-09-24 15:36:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:36:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-09-24 15:36:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-09-24 15:36:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-09-24 15:36:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-24 15:36:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-24 15:36:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-24 15:36:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:36:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-24 15:36:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-09-24 15:36:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-24 15:36:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-09-24 15:36:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-09-24 15:36:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-09-24 15:36:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-24 15:36:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-24 15:36:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-24 15:36:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-24 15:36:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-09-24 15:36:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-09-24 15:36:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-09-24 15:36:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-09-24 15:36:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-09-24 15:36:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 15:36:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:36:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-24 15:36:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:36:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 15:36:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:36:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-24 15:36:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:36:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-24 15:36:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-24 15:36:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-24 15:36:44,706 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-24 15:36:46,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:36:46,257 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 15:36:46,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:36:46 BoogieIcfgContainer [2020-09-24 15:36:46,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:36:46,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:36:46,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:36:46,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:36:46,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:36:41" (1/3) ... [2020-09-24 15:36:46,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411a570e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:36:46, skipping insertion in model container [2020-09-24 15:36:46,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:43" (2/3) ... [2020-09-24 15:36:46,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411a570e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:36:46, skipping insertion in model container [2020-09-24 15:36:46,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:36:46" (3/3) ... [2020-09-24 15:36:46,280 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 [2020-09-24 15:36:46,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:36:46,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:36:46,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:36:46,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:36:46,364 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:36:46,364 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:36:46,364 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:36:46,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:36:46,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:36:46,365 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:36:46,365 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:36:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states. [2020-09-24 15:36:46,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 15:36:46,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:36:46,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:36:46,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:36:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:36:46,443 INFO L82 PathProgramCache]: Analyzing trace with hash -410682460, now seen corresponding path program 1 times [2020-09-24 15:36:46,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:36:46,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305791890] [2020-09-24 15:36:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:36:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:47,640 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 15:36:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:36:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:47,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:36:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:47,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:36:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-24 15:36:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:36:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 15:36:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-24 15:36:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:48,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-24 15:36:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:48,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:36:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:36:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-09-24 15:36:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 15:36:48,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305791890] [2020-09-24 15:36:48,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:36:48,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 15:36:48,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679035085] [2020-09-24 15:36:48,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:36:48,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:36:48,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:36:48,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:36:48,251 INFO L87 Difference]: Start difference. First operand 1198 states. Second operand 9 states. [2020-09-24 15:36:49,984 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 15:36:50,379 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 15:36:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:36:59,928 INFO L93 Difference]: Finished difference Result 2585 states and 3000 transitions. [2020-09-24 15:36:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:36:59,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-09-24 15:36:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:36:59,960 INFO L225 Difference]: With dead ends: 2585 [2020-09-24 15:36:59,960 INFO L226 Difference]: Without dead ends: 1559 [2020-09-24 15:36:59,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-24 15:36:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-09-24 15:37:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1125. [2020-09-24 15:37:00,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-09-24 15:37:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1230 transitions. [2020-09-24 15:37:00,172 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1230 transitions. Word has length 230 [2020-09-24 15:37:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:00,173 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 1230 transitions. [2020-09-24 15:37:00,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:37:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1230 transitions. [2020-09-24 15:37:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-24 15:37:00,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:00,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:00,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:37:00,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:00,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1201488600, now seen corresponding path program 1 times [2020-09-24 15:37:00,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:00,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575112707] [2020-09-24 15:37:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:00,766 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 15:37:00,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:00,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:37:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:37:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:00,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-24 15:37:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:00,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 15:37:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:01,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 15:37:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:01,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-24 15:37:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:37:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:01,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-24 15:37:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 15:37:01,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575112707] [2020-09-24 15:37:01,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:37:01,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 15:37:01,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014273393] [2020-09-24 15:37:01,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 15:37:01,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:01,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 15:37:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:37:01,221 INFO L87 Difference]: Start difference. First operand 1125 states and 1230 transitions. Second operand 10 states. [2020-09-24 15:37:02,507 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 15:37:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:11,686 INFO L93 Difference]: Finished difference Result 2537 states and 2880 transitions. [2020-09-24 15:37:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 15:37:11,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 238 [2020-09-24 15:37:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:11,699 INFO L225 Difference]: With dead ends: 2537 [2020-09-24 15:37:11,700 INFO L226 Difference]: Without dead ends: 1563 [2020-09-24 15:37:11,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:37:11,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-09-24 15:37:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1129. [2020-09-24 15:37:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-09-24 15:37:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1234 transitions. [2020-09-24 15:37:11,797 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1234 transitions. Word has length 238 [2020-09-24 15:37:11,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:11,798 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1234 transitions. [2020-09-24 15:37:11,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 15:37:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1234 transitions. [2020-09-24 15:37:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-24 15:37:11,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:11,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:11,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:37:11,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:11,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1936210604, now seen corresponding path program 2 times [2020-09-24 15:37:11,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:11,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068413020] [2020-09-24 15:37:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,349 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 15:37:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:37:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:37:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-24 15:37:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 15:37:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-24 15:37:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-24 15:37:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:37:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-09-24 15:37:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 15:37:12,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068413020] [2020-09-24 15:37:12,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:37:12,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:37:12,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819678043] [2020-09-24 15:37:12,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:37:12,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:12,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:37:12,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:37:12,863 INFO L87 Difference]: Start difference. First operand 1129 states and 1234 transitions. Second operand 11 states. [2020-09-24 15:37:13,996 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 15:37:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:23,629 INFO L93 Difference]: Finished difference Result 2545 states and 2888 transitions. [2020-09-24 15:37:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 15:37:23,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-09-24 15:37:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:23,640 INFO L225 Difference]: With dead ends: 2545 [2020-09-24 15:37:23,640 INFO L226 Difference]: Without dead ends: 1567 [2020-09-24 15:37:23,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-09-24 15:37:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2020-09-24 15:37:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1133. [2020-09-24 15:37:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-09-24 15:37:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1238 transitions. [2020-09-24 15:37:23,728 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1238 transitions. Word has length 246 [2020-09-24 15:37:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:23,729 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1238 transitions. [2020-09-24 15:37:23,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:37:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1238 transitions. [2020-09-24 15:37:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-24 15:37:23,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:23,733 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:23,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:37:23,734 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash 580514864, now seen corresponding path program 3 times [2020-09-24 15:37:23,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:23,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936151480] [2020-09-24 15:37:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,258 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 15:37:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:37:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:37:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-24 15:37:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 15:37:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 15:37:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-24 15:37:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:37:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-09-24 15:37:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 15:37:24,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936151480] [2020-09-24 15:37:24,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:37:24,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 15:37:24,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898451365] [2020-09-24 15:37:24,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:37:24,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:24,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:37:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:37:24,737 INFO L87 Difference]: Start difference. First operand 1133 states and 1238 transitions. Second operand 12 states. [2020-09-24 15:37:25,867 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 15:37:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:35,619 INFO L93 Difference]: Finished difference Result 2553 states and 2896 transitions. [2020-09-24 15:37:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:37:35,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2020-09-24 15:37:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:35,627 INFO L225 Difference]: With dead ends: 2553 [2020-09-24 15:37:35,627 INFO L226 Difference]: Without dead ends: 1571 [2020-09-24 15:37:35,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-24 15:37:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2020-09-24 15:37:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1137. [2020-09-24 15:37:35,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2020-09-24 15:37:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1242 transitions. [2020-09-24 15:37:35,713 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1242 transitions. Word has length 254 [2020-09-24 15:37:35,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:35,714 INFO L479 AbstractCegarLoop]: Abstraction has 1137 states and 1242 transitions. [2020-09-24 15:37:35,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:37:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1242 transitions. [2020-09-24 15:37:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-24 15:37:35,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:35,718 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:35,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:37:35,719 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:35,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:35,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1946424908, now seen corresponding path program 4 times [2020-09-24 15:37:35,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:35,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656098356] [2020-09-24 15:37:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat