/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 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-eb0fd7c [2020-09-21 11:00:19,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:00:19,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:00:19,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:00:19,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:00:19,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:00:19,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:00:19,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:00:19,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:00:19,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:00:19,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:00:19,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:00:19,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:00:19,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:00:19,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:00:19,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:00:19,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:00:19,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:00:19,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:00:19,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:00:19,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:00:19,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:00:19,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:00:19,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:00:20,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:00:20,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:00:20,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:00:20,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:00:20,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:00:20,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:00:20,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:00:20,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:00:20,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:00:20,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:00:20,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:00:20,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:00:20,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:00:20,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:00:20,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:00:20,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:00:20,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:00:20,012 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 [2020-09-21 11:00:20,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:00:20,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:00:20,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:00:20,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:00:20,039 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:00:20,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:00:20,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:00:20,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:00:20,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:00:20,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:00:20,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:00:20,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:00:20,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:00:20,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:00:20,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:00:20,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:00:20,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:00:20,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:00:20,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:00:20,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:00:20,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:00:20,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:00:20,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:00:20,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:00:20,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:00:20,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:00:20,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 11:00:20,044 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 -> false [2020-09-21 11:00:20,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:00:20,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:00:20,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:00:20,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:00:20,520 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:00:20,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-21 11:00:20,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adfca4c9a/994680754a394143a79fead116bbba4d/FLAG5481a1a77 [2020-09-21 11:00:21,549 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:00:21,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-09-21 11:00:21,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adfca4c9a/994680754a394143a79fead116bbba4d/FLAG5481a1a77 [2020-09-21 11:00:21,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adfca4c9a/994680754a394143a79fead116bbba4d [2020-09-21 11:00:21,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:00:21,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:00:21,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:00:21,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:00:21,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:00:21,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:00:21" (1/1) ... [2020-09-21 11:00:21,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f94811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:21, skipping insertion in model container [2020-09-21 11:00:21,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:00:21" (1/1) ... [2020-09-21 11:00:21,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:00:22,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:00:23,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:00:23,705 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:00:23,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:00:24,026 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:00:24,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24 WrapperNode [2020-09-21 11:00:24,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:00:24,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:00:24,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:00:24,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:00:24,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (1/1) ... [2020-09-21 11:00:24,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (1/1) ... [2020-09-21 11:00:24,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (1/1) ... [2020-09-21 11:00:24,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (1/1) ... [2020-09-21 11:00:24,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (1/1) ... [2020-09-21 11:00:24,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (1/1) ... [2020-09-21 11:00:24,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (1/1) ... [2020-09-21 11:00:24,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:00:24,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:00:24,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:00:24,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:00:24,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (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 [2020-09-21 11:00:24,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:00:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:00:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-09-21 11:00:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-09-21 11:00:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-09-21 11:00:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-09-21 11:00:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-09-21 11:00:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-09-21 11:00:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-09-21 11:00:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-21 11:00:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-09-21 11:00:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-09-21 11:00:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-09-21 11:00:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-09-21 11:00:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-09-21 11:00:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-09-21 11:00:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-09-21 11:00:24,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:00:24,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 11:00:24,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 11:00:24,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 11:00:24,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 11:00:24,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 11:00:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 11:00:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 11:00:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 11:00:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-09-21 11:00:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-09-21 11:00:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-09-21 11:00:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-09-21 11:00:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-09-21 11:00:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-09-21 11:00:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-09-21 11:00:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-09-21 11:00:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-09-21 11:00:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-09-21 11:00:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-09-21 11:00:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-09-21 11:00:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-09-21 11:00:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-09-21 11:00:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-09-21 11:00:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-09-21 11:00:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-09-21 11:00:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-09-21 11:00:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:00:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-09-21 11:00:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-09-21 11:00:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-09-21 11:00:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-09-21 11:00:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-09-21 11:00:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-09-21 11:00:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-09-21 11:00:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-09-21 11:00:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-21 11:00:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-09-21 11:00:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-09-21 11:00:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-09-21 11:00:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-21 11:00:24,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-21 11:00:24,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-21 11:00:24,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-21 11:00:24,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-09-21 11:00:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 11:00:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-09-21 11:00:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-09-21 11:00:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-09-21 11:00:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-09-21 11:00:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-09-21 11:00:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 11:00:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-09-21 11:00:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-09-21 11:00:24,434 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-09-21 11:00:24,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-21 11:00:24,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-09-21 11:00:24,435 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-09-21 11:00:24,435 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-09-21 11:00:24,435 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-09-21 11:00:24,435 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-09-21 11:00:24,436 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-09-21 11:00:24,436 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-09-21 11:00:24,436 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-09-21 11:00:24,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-09-21 11:00:24,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-09-21 11:00:24,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-09-21 11:00:24,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-09-21 11:00:24,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-09-21 11:00:24,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-09-21 11:00:24,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-09-21 11:00:24,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-09-21 11:00:24,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-09-21 11:00:24,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-09-21 11:00:24,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-09-21 11:00:24,440 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-09-21 11:00:24,440 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-09-21 11:00:24,440 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 11:00:24,440 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-21 11:00:24,440 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 11:00:24,440 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-09-21 11:00:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:00:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 11:00:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-09-21 11:00:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-09-21 11:00:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-09-21 11:00:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:00:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-09-21 11:00:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-09-21 11:00:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-09-21 11:00:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-09-21 11:00:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-21 11:00:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-09-21 11:00:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-09-21 11:00:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-21 11:00:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:00:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-09-21 11:00:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-09-21 11:00:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-09-21 11:00:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-09-21 11:00:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-09-21 11:00:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-09-21 11:00:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-09-21 11:00:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-09-21 11:00:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:00:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-09-21 11:00:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-09-21 11:00:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-09-21 11:00:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:00:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-09-21 11:00:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-09-21 11:00:24,448 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-09-21 11:00:24,448 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-09-21 11:00:24,448 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-09-21 11:00:24,448 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-09-21 11:00:24,449 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-09-21 11:00:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-09-21 11:00:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:00:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:00:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:00:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 11:00:24,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:00:24,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:00:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 11:00:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:00:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 11:00:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 11:00:24,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 11:00:24,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 11:00:24,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 11:00:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 11:00:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 11:00:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-09-21 11:00:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-09-21 11:00:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-09-21 11:00:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-09-21 11:00:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-09-21 11:00:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-09-21 11:00:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-09-21 11:00:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-09-21 11:00:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-09-21 11:00:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-09-21 11:00:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-09-21 11:00:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-09-21 11:00:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-09-21 11:00:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-09-21 11:00:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-09-21 11:00:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-09-21 11:00:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-09-21 11:00:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-09-21 11:00:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-09-21 11:00:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-09-21 11:00:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-09-21 11:00:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-09-21 11:00:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-09-21 11:00:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-09-21 11:00:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-09-21 11:00:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-09-21 11:00:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-09-21 11:00:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-09-21 11:00:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-09-21 11:00:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-09-21 11:00:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-09-21 11:00:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:00:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-09-21 11:00:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-09-21 11:00:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-09-21 11:00:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-09-21 11:00:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:00:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-09-21 11:00:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-09-21 11:00:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-09-21 11:00:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-21 11:00:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 11:00:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 11:00:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:00:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-21 11:00:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-09-21 11:00:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-21 11:00:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-09-21 11:00:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-09-21 11:00:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-09-21 11:00:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-21 11:00:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-21 11:00:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-21 11:00:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-21 11:00:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-09-21 11:00:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-09-21 11:00:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-09-21 11:00:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-09-21 11:00:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-09-21 11:00:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-21 11:00:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:00:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 11:00:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:00:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 11:00:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:00:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-21 11:00:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:00:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-21 11:00:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-21 11:00:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-21 11:00:25,340 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 11:00:27,291 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:00:27,291 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 11:00:27,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:00:27 BoogieIcfgContainer [2020-09-21 11:00:27,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:00:27,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:00:27,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:00:27,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:00:27,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:00:21" (1/3) ... [2020-09-21 11:00:27,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6c837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:00:27, skipping insertion in model container [2020-09-21 11:00:27,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:24" (2/3) ... [2020-09-21 11:00:27,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6c837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:00:27, skipping insertion in model container [2020-09-21 11:00:27,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:00:27" (3/3) ... [2020-09-21 11:00:27,311 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 [2020-09-21 11:00:27,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:00:27,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:00:27,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:00:27,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:00:27,408 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:00:27,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:00:27,409 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:00:27,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:00:27,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:00:27,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:00:27,409 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:00:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-09-21 11:00:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 11:00:27,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:27,463 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] [2020-09-21 11:00:27,464 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:27,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-09-21 11:00:27,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:27,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259545413] [2020-09-21 11:00:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,518 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 11:00:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:00:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-21 11:00:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:00:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:00:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 11:00:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 11:00:28,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259545413] [2020-09-21 11:00:28,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:00:28,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:00:28,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777718215] [2020-09-21 11:00:28,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:00:28,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:28,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:00:28,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:00:28,938 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-09-21 11:00:34,376 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 11:00:34,768 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-21 11:00:41,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:00:41,386 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-09-21 11:00:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:00:41,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-09-21 11:00:41,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:00:41,415 INFO L225 Difference]: With dead ends: 1218 [2020-09-21 11:00:41,416 INFO L226 Difference]: Without dead ends: 705 [2020-09-21 11:00:41,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:00:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-21 11:00:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-09-21 11:00:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-09-21 11:00:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-09-21 11:00:41,584 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-09-21 11:00:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:00:41,585 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-09-21 11:00:41,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:00:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-09-21 11:00:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-21 11:00:41,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:41,591 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] [2020-09-21 11:00:41,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:00:41,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:41,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-09-21 11:00:41,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:41,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189115101] [2020-09-21 11:00:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,100 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 11:00:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:00:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:00:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:00:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:00:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-21 11:00:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:00:42,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189115101] [2020-09-21 11:00:42,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:00:42,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:00:42,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823651667] [2020-09-21 11:00:42,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:00:42,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:42,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:00:42,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:00:42,429 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-09-21 11:00:47,724 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 11:00:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:00:55,837 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-09-21 11:00:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:00:55,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-09-21 11:00:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:00:55,844 INFO L225 Difference]: With dead ends: 1183 [2020-09-21 11:00:55,844 INFO L226 Difference]: Without dead ends: 706 [2020-09-21 11:00:55,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:00:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-21 11:00:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-09-21 11:00:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-09-21 11:00:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-09-21 11:00:55,962 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-09-21 11:00:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:00:55,962 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-09-21 11:00:55,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:00:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-09-21 11:00:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 11:00:55,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:55,973 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] [2020-09-21 11:00:55,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:00:55,974 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:55,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-09-21 11:00:55,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:55,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290597212] [2020-09-21 11:00:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,662 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 11:00:56,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:00:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:00:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:00:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:00:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 11:00:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 11:00:56,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290597212] [2020-09-21 11:00:56,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:00:57,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 11:00:57,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958680859] [2020-09-21 11:00:57,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 11:00:57,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:57,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 11:00:57,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:00:57,002 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-09-21 11:01:02,904 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 11:01:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:01:10,772 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-09-21 11:01:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:01:10,774 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-09-21 11:01:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:01:10,779 INFO L225 Difference]: With dead ends: 1185 [2020-09-21 11:01:10,780 INFO L226 Difference]: Without dead ends: 707 [2020-09-21 11:01:10,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-09-21 11:01:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-21 11:01:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-09-21 11:01:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-09-21 11:01:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-09-21 11:01:10,885 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-09-21 11:01:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:01:10,886 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-09-21 11:01:10,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 11:01:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-09-21 11:01:10,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 11:01:10,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:01:10,888 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] [2020-09-21 11:01:10,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:01:10,889 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:01:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:01:10,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-09-21 11:01:10,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:01:10,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339077378] [2020-09-21 11:01:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:01:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,469 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 11:01:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:01:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:01:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:01:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:01:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 11:01:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:01:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:01:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:01:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 11:01:11,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339077378] [2020-09-21 11:01:11,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:01:11,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:01:11,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273831732] [2020-09-21 11:01:11,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:01:11,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:01:11,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:01:11,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:01:11,812 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-09-21 11:01:18,509 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 211