/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:35:42,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:35:42,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:35:42,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:35:42,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:35:42,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:35:42,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:35:42,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:35:42,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:35:42,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:35:42,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:35:42,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:35:42,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:35:42,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:35:42,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:35:42,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:35:42,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:35:42,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:35:42,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:35:42,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:35:42,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:35:42,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:35:42,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:35:42,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:35:42,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:35:42,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:35:42,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:35:42,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:35:42,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:35:42,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:35:42,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:35:42,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:35:42,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:35:42,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:35:42,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:35:42,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:35:42,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:35:42,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:35:42,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:35:42,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:35:42,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:35:42,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 17:35:42,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:35:42,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:35:42,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:35:42,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:35:42,604 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:35:42,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:35:42,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:35:42,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:35:42,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:35:42,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:35:42,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:35:42,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:35:42,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:35:42,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:35:42,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:35:42,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:35:42,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:35:42,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:35:42,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:35:42,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:35:42,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:35:42,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:35:42,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:35:42,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:35:42,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:35:42,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:35:42,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 17:35:42,609 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:35:42,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:35:42,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:35:42,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:35:42,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:35:42,933 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:35:42,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 17:35:43,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3990e75a/21d6399b33024c8a9c2dbada92c20bf0/FLAG7a42e3eda [2020-08-18 17:35:43,862 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:35:43,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 17:35:43,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3990e75a/21d6399b33024c8a9c2dbada92c20bf0/FLAG7a42e3eda [2020-08-18 17:35:44,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3990e75a/21d6399b33024c8a9c2dbada92c20bf0 [2020-08-18 17:35:44,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:35:44,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:35:44,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:35:44,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:35:44,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:35:44,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:35:44" (1/1) ... [2020-08-18 17:35:44,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3326bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:44, skipping insertion in model container [2020-08-18 17:35:44,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:35:44" (1/1) ... [2020-08-18 17:35:44,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:35:44,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:35:45,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:35:45,989 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:35:46,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:35:46,286 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:35:46,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46 WrapperNode [2020-08-18 17:35:46,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:35:46,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:35:46,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:35:46,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:35:46,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... [2020-08-18 17:35:46,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... [2020-08-18 17:35:46,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... [2020-08-18 17:35:46,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... [2020-08-18 17:35:46,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... [2020-08-18 17:35:46,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... [2020-08-18 17:35:46,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... [2020-08-18 17:35:46,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:35:46,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:35:46,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:35:46,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:35:46,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:35:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:35:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:35:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-18 17:35:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-18 17:35:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-18 17:35:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-18 17:35:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-18 17:35:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-18 17:35:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 17:35:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 17:35:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 17:35:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 17:35:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-18 17:35:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-18 17:35:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-18 17:35:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 17:35:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-18 17:35:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 17:35:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 17:35:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 17:35:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 17:35:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 17:35:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 17:35:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 17:35:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 17:35:46,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 17:35:46,562 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 17:35:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-18 17:35:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-18 17:35:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-18 17:35:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-18 17:35:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-18 17:35:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-18 17:35:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-18 17:35:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-18 17:35:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-18 17:35:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-18 17:35:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-18 17:35:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-18 17:35:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-18 17:35:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-18 17:35:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-18 17:35:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-18 17:35:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-18 17:35:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:35:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 17:35:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 17:35:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 17:35:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 17:35:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 17:35:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-18 17:35:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-18 17:35:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 17:35:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 17:35:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 17:35:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 17:35:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 17:35:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 17:35:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 17:35:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 17:35:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 17:35:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 17:35:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 17:35:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 17:35:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 17:35:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 17:35:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 17:35:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 17:35:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 17:35:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 17:35:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-18 17:35:46,573 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-18 17:35:46,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 17:35:46,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-18 17:35:46,574 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-18 17:35:46,574 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 17:35:46,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-18 17:35:46,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 17:35:46,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 17:35:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 17:35:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-18 17:35:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-18 17:35:46,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-18 17:35:46,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-18 17:35:46,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-18 17:35:46,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-18 17:35:46,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-18 17:35:46,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-18 17:35:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-18 17:35:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-18 17:35:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-18 17:35:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-18 17:35:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-18 17:35:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-18 17:35:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 17:35:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 17:35:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 17:35:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-18 17:35:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:35:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 17:35:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-18 17:35:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-18 17:35:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-18 17:35:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:35:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-18 17:35:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-18 17:35:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-18 17:35:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-18 17:35:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 17:35:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-18 17:35:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 17:35:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 17:35:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:35:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 17:35:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 17:35:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 17:35:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 17:35:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 17:35:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 17:35:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-18 17:35:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 17:35:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:35:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 17:35:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-18 17:35:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-18 17:35:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:35:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-18 17:35:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 17:35:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 17:35:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 17:35:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 17:35:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-18 17:35:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-18 17:35:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 17:35:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:35:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 17:35:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:35:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 17:35:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:35:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 17:35:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 17:35:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:35:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 17:35:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 17:35:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 17:35:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 17:35:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 17:35:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 17:35:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 17:35:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-18 17:35:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-18 17:35:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 17:35:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 17:35:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-18 17:35:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-18 17:35:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-18 17:35:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-18 17:35:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-18 17:35:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-18 17:35:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-18 17:35:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-18 17:35:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-18 17:35:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-18 17:35:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-18 17:35:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-18 17:35:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-18 17:35:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-18 17:35:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-18 17:35:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-18 17:35:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-18 17:35:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-18 17:35:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-18 17:35:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-18 17:35:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-18 17:35:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-18 17:35:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-18 17:35:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-18 17:35:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-18 17:35:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-18 17:35:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-18 17:35:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:35:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-18 17:35:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-18 17:35:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-18 17:35:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-18 17:35:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:35:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-18 17:35:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-18 17:35:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-18 17:35:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 17:35:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 17:35:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 17:35:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:35:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 17:35:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 17:35:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 17:35:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 17:35:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 17:35:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 17:35:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 17:35:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 17:35:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 17:35:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 17:35:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 17:35:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 17:35:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 17:35:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 17:35:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 17:35:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 17:35:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:35:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 17:35:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:35:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 17:35:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:35:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 17:35:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:35:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 17:35:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 17:35:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 17:35:47,301 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 17:35:49,614 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:35:49,614 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 17:35:49,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:35:49 BoogieIcfgContainer [2020-08-18 17:35:49,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:35:49,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:35:49,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:35:49,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:35:49,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:35:44" (1/3) ... [2020-08-18 17:35:49,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1b0909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:35:49, skipping insertion in model container [2020-08-18 17:35:49,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:46" (2/3) ... [2020-08-18 17:35:49,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1b0909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:35:49, skipping insertion in model container [2020-08-18 17:35:49,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:35:49" (3/3) ... [2020-08-18 17:35:49,633 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 17:35:49,647 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:35:49,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:35:49,673 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:35:49,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:35:49,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:35:49,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:35:49,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:35:49,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:35:49,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:35:49,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:35:49,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:35:49,737 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-18 17:35:49,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 17:35:49,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:35:49,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:35:49,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:35:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:35:49,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-18 17:35:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:35:49,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386485097] [2020-08-18 17:35:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:35:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,662 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 17:35:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:35:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:35:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:35:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:35:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:35:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 17:35:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 17:35:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:35:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:35:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:50,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:35:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:51,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 17:35:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 17:35:51,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386485097] [2020-08-18 17:35:51,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:35:51,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 17:35:51,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420077619] [2020-08-18 17:35:51,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:35:51,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:35:51,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:35:51,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:35:51,084 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-18 17:35:55,660 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 17:35:55,998 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 17:36:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:01,608 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-18 17:36:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:36:01,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-18 17:36:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:01,634 INFO L225 Difference]: With dead ends: 1218 [2020-08-18 17:36:01,635 INFO L226 Difference]: Without dead ends: 705 [2020-08-18 17:36:01,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-08-18 17:36:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-18 17:36:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-18 17:36:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-18 17:36:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-18 17:36:01,820 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-18 17:36:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:01,821 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-18 17:36:01,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:36:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-18 17:36:01,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-18 17:36:01,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:01,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:36:01,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:36:01,828 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:01,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-18 17:36:01,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:01,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053966577] [2020-08-18 17:36:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,278 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 17:36:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 17:36:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:36:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 17:36:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 17:36:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 17:36:02,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053966577] [2020-08-18 17:36:02,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:36:02,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:36:02,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965384046] [2020-08-18 17:36:02,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:36:02,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:36:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:36:02,508 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-18 17:36:07,405 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 17:36:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:13,731 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-18 17:36:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 17:36:13,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-18 17:36:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:13,744 INFO L225 Difference]: With dead ends: 1183 [2020-08-18 17:36:13,744 INFO L226 Difference]: Without dead ends: 706 [2020-08-18 17:36:13,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:36:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-18 17:36:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-18 17:36:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-18 17:36:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-18 17:36:13,831 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-18 17:36:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:13,832 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-18 17:36:13,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:36:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-18 17:36:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 17:36:13,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:13,836 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:36:13,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:36:13,837 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:13,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:13,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-18 17:36:13,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:13,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832800196] [2020-08-18 17:36:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,190 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 17:36:14,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 17:36:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:36:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:36:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 17:36:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 17:36:14,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832800196] [2020-08-18 17:36:14,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:36:14,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 17:36:14,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721570274] [2020-08-18 17:36:14,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:36:14,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:36:14,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:36:14,461 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-18 17:36:19,942 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 17:36:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:26,152 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-18 17:36:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:36:26,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-18 17:36:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:26,160 INFO L225 Difference]: With dead ends: 1185 [2020-08-18 17:36:26,161 INFO L226 Difference]: Without dead ends: 707 [2020-08-18 17:36:26,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-08-18 17:36:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-18 17:36:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-18 17:36:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-18 17:36:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-18 17:36:26,255 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-18 17:36:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:26,257 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-18 17:36:26,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:36:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-18 17:36:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 17:36:26,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:26,261 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:36:26,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:36:26,261 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-18 17:36:26,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:26,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280883087] [2020-08-18 17:36:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,653 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 17:36:26,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 17:36:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:36:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:36:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 17:36:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 17:36:26,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280883087] [2020-08-18 17:36:26,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:36:26,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 17:36:26,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489150571] [2020-08-18 17:36:26,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:36:26,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:26,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:36:26,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:36:26,932 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-18 17:36:32,115 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 17:36:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:39,553 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-18 17:36:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 17:36:39,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-18 17:36:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:39,560 INFO L225 Difference]: With dead ends: 1187 [2020-08-18 17:36:39,560 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 17:36:39,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-08-18 17:36:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 17:36:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-18 17:36:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-18 17:36:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-18 17:36:39,651 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-18 17:36:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:39,651 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-18 17:36:39,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:36:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-18 17:36:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 17:36:39,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:39,653 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:36:39,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:36:39,653 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:39,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:39,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-18 17:36:39,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:39,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100121844] [2020-08-18 17:36:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,037 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 17:36:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 17:36:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 17:36:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 17:36:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 17:36:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-18 17:36:40,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100121844] [2020-08-18 17:36:40,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:36:40,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:36:40,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447178001] [2020-08-18 17:36:40,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:36:40,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:40,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:36:40,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:36:40,254 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-18 17:36:46,347 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 210