/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 -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 16:47:25,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:47:25,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:47:25,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:47:25,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:47:25,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:47:25,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:47:25,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:47:25,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:47:25,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:47:25,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:47:25,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:47:25,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:47:25,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:47:25,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:47:25,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:47:25,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:47:25,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:47:25,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:47:25,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:47:25,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:47:25,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:47:25,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:47:25,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:47:25,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:47:25,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:47:25,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:47:25,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:47:25,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:47:25,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:47:25,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:47:25,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:47:25,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:47:25,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:47:25,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:47:25,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:47:25,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:47:25,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:47:25,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:47:25,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:47:25,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:47:25,598 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 16:47:25,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:47:25,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:47:25,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:47:25,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:47:25,622 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:47:25,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:47:25,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:47:25,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:47:25,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:47:25,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:47:25,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:47:25,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:47:25,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:47:25,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:47:25,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:47:25,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:47:25,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:47:25,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:47:25,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:47:25,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:47:25,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:47:25,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:47:25,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:47:25,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:47:25,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:47:25,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:47:25,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 16:47:25,627 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 [2020-08-18 16:47:25,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:47:25,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:47:25,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:47:25,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:47:25,939 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:47:25,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 16:47:26,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b287b52bc/6a031db9f434415f9ea3ef6182030915/FLAG875635a4b [2020-08-18 16:47:26,725 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:47:26,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-18 16:47:26,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b287b52bc/6a031db9f434415f9ea3ef6182030915/FLAG875635a4b [2020-08-18 16:47:26,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b287b52bc/6a031db9f434415f9ea3ef6182030915 [2020-08-18 16:47:26,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:47:26,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:47:26,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:47:26,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:47:26,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:47:26,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:47:26" (1/1) ... [2020-08-18 16:47:26,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35055a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:26, skipping insertion in model container [2020-08-18 16:47:26,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:47:26" (1/1) ... [2020-08-18 16:47:26,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:47:26,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:47:28,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:47:28,358 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:47:28,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:47:28,610 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:47:28,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28 WrapperNode [2020-08-18 16:47:28,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:47:28,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:47:28,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:47:28,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:47:28,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (1/1) ... [2020-08-18 16:47:28,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (1/1) ... [2020-08-18 16:47:28,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (1/1) ... [2020-08-18 16:47:28,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (1/1) ... [2020-08-18 16:47:28,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (1/1) ... [2020-08-18 16:47:28,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (1/1) ... [2020-08-18 16:47:28,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (1/1) ... [2020-08-18 16:47:28,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:47:28,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:47:28,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:47:28,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:47:28,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (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 16:47:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:47:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:47:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-18 16:47:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-18 16:47:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-18 16:47:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-18 16:47:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-18 16:47:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-18 16:47:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 16:47:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 16:47:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 16:47:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 16:47:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-18 16:47:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-18 16:47:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-18 16:47:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 16:47:28,936 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-18 16:47:28,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 16:47:28,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 16:47:28,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 16:47:28,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 16:47:28,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 16:47:28,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 16:47:28,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 16:47:28,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 16:47:28,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 16:47:28,939 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 16:47:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-18 16:47:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-18 16:47:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-18 16:47:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-18 16:47:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-18 16:47:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-18 16:47:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-18 16:47:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-18 16:47:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-18 16:47:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-18 16:47:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-18 16:47:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-18 16:47:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-18 16:47:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-18 16:47:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-18 16:47:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-18 16:47:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-18 16:47:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:47:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 16:47:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 16:47:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 16:47:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 16:47:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 16:47:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-18 16:47:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-18 16:47:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 16:47:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 16:47:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 16:47:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 16:47:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 16:47:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 16:47:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 16:47:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 16:47:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 16:47:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 16:47:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 16:47:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 16:47:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 16:47:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 16:47:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 16:47:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 16:47:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 16:47:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 16:47:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-18 16:47:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-18 16:47:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 16:47:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-18 16:47:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-18 16:47:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 16:47:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-18 16:47:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 16:47:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 16:47:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 16:47:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-18 16:47:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-18 16:47:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-18 16:47:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-18 16:47:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-18 16:47:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-18 16:47:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-18 16:47:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-18 16:47:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-18 16:47:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-18 16:47:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-18 16:47:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-18 16:47:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-18 16:47:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-18 16:47:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 16:47:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 16:47:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 16:47:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-18 16:47:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:47:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 16:47:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-18 16:47:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-18 16:47:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-18 16:47:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:47:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-18 16:47:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-18 16:47:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-18 16:47:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-18 16:47:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 16:47:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-18 16:47:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 16:47:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 16:47:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:47:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 16:47:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 16:47:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 16:47:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 16:47:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 16:47:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 16:47:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-18 16:47:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 16:47:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:47:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 16:47:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-18 16:47:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-18 16:47:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:47:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-18 16:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 16:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 16:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 16:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 16:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-18 16:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-18 16:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 16:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 16:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 16:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 16:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 16:47:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:47:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 16:47:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 16:47:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 16:47:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 16:47:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 16:47:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 16:47:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 16:47:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-18 16:47:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-18 16:47:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 16:47:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 16:47:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-18 16:47:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-18 16:47:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-18 16:47:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-18 16:47:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-18 16:47:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-18 16:47:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-18 16:47:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-18 16:47:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-18 16:47:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-18 16:47:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-18 16:47:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-18 16:47:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-18 16:47:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-18 16:47:28,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-18 16:47:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-18 16:47:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-18 16:47:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-18 16:47:28,983 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-18 16:47:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-18 16:47:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-18 16:47:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-18 16:47:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-18 16:47:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-18 16:47:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-18 16:47:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-18 16:47:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-18 16:47:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:47:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-18 16:47:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-18 16:47:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-18 16:47:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-18 16:47:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:47:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-18 16:47:28,987 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-18 16:47:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-18 16:47:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 16:47:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 16:47:28,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 16:47:28,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:47:28,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 16:47:28,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 16:47:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 16:47:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 16:47:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 16:47:28,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 16:47:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 16:47:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 16:47:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 16:47:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 16:47:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 16:47:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 16:47:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 16:47:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 16:47:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 16:47:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 16:47:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:47:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 16:47:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:47:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 16:47:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:47:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 16:47:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:47:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 16:47:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 16:47:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 16:47:29,774 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 16:47:31,607 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:47:31,607 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 16:47:31,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:47:31 BoogieIcfgContainer [2020-08-18 16:47:31,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:47:31,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:47:31,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:47:31,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:47:31,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:47:26" (1/3) ... [2020-08-18 16:47:31,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55793002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:47:31, skipping insertion in model container [2020-08-18 16:47:31,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:47:28" (2/3) ... [2020-08-18 16:47:31,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55793002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:47:31, skipping insertion in model container [2020-08-18 16:47:31,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:47:31" (3/3) ... [2020-08-18 16:47:31,623 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 16:47:31,633 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:47:31,641 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:47:31,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:47:31,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:47:31,681 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:47:31,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:47:31,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:47:31,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:47:31,682 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:47:31,682 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:47:31,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:47:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-18 16:47:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 16:47:31,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:47:31,723 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 16:47:31,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:47:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:47:31,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-18 16:47:31,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:47:31,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338863809] [2020-08-18 16:47:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:47:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,609 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 16:47:32,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:47:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:47:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:47:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 16:47:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 16:47:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:47:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:47:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 16:47:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:32,838 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 16:47:32,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338863809] [2020-08-18 16:47:32,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:47:32,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 16:47:32,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190933189] [2020-08-18 16:47:32,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:47:32,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:47:32,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:47:32,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:47:32,864 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-18 16:47:37,635 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 16:47:37,947 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 16:47:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:47:43,133 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-18 16:47:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:47:43,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-18 16:47:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:47:43,170 INFO L225 Difference]: With dead ends: 1218 [2020-08-18 16:47:43,170 INFO L226 Difference]: Without dead ends: 705 [2020-08-18 16:47:43,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-08-18 16:47:43,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-18 16:47:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-18 16:47:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-18 16:47:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-18 16:47:43,367 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-18 16:47:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:47:43,368 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-18 16:47:43,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:47:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-18 16:47:43,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-18 16:47:43,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:47:43,373 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 16:47:43,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:47:43,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:47:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:47:43,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-18 16:47:43,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:47:43,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551845384] [2020-08-18 16:47:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:47:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,778 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 16:47:43,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:47:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:47:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:47:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 16:47:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:47:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:47:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:47:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 16:47:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:43,976 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 16:47:43,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551845384] [2020-08-18 16:47:43,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:47:43,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:47:43,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939353757] [2020-08-18 16:47:43,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:47:43,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:47:43,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:47:43,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:47:43,980 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-18 16:47:49,218 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 16:47:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:47:54,899 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-18 16:47:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:47:54,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-18 16:47:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:47:54,910 INFO L225 Difference]: With dead ends: 1183 [2020-08-18 16:47:54,910 INFO L226 Difference]: Without dead ends: 706 [2020-08-18 16:47:54,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:47:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-18 16:47:54,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-18 16:47:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-18 16:47:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-18 16:47:54,990 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-18 16:47:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:47:54,991 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-18 16:47:54,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:47:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-18 16:47:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:47:54,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:47:54,994 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 16:47:54,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:47:54,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:47:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:47:54,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-18 16:47:54,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:47:54,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506989429] [2020-08-18 16:47:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:47:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,415 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 16:47:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:47:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:47:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:47:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 16:47:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:47:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:47:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:47:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:47:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 16:47:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:47:55,632 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 16:47:55,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506989429] [2020-08-18 16:47:55,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:47:55,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 16:47:55,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437645038] [2020-08-18 16:47:55,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:47:55,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:47:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:47:55,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:47:55,636 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-18 16:48:00,736 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 16:48:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:48:06,469 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-18 16:48:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:48:06,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-18 16:48:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:48:06,476 INFO L225 Difference]: With dead ends: 1185 [2020-08-18 16:48:06,476 INFO L226 Difference]: Without dead ends: 707 [2020-08-18 16:48:06,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-08-18 16:48:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-18 16:48:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-18 16:48:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-18 16:48:06,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-18 16:48:06,552 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-18 16:48:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:48:06,552 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-18 16:48:06,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:48:06,553 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-18 16:48:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 16:48:06,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:48:06,555 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 16:48:06,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:48:06,555 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:48:06,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:48:06,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-18 16:48:06,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:48:06,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913249755] [2020-08-18 16:48:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:48:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:06,856 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 16:48:06,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:48:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:48:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:48:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 16:48:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:48:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:07,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:48:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:07,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:48:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:48:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:07,119 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 16:48:07,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913249755] [2020-08-18 16:48:07,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:48:07,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:48:07,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404830404] [2020-08-18 16:48:07,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:48:07,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:48:07,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:48:07,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:48:07,124 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-18 16:48:12,918 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 16:48:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:48:19,728 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-18 16:48:19,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:48:19,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-18 16:48:19,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:48:19,735 INFO L225 Difference]: With dead ends: 1187 [2020-08-18 16:48:19,735 INFO L226 Difference]: Without dead ends: 708 [2020-08-18 16:48:19,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:48:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-18 16:48:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-18 16:48:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-18 16:48:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-18 16:48:19,809 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-18 16:48:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:48:19,809 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-18 16:48:19,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:48:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-18 16:48:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 16:48:19,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:48:19,811 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 16:48:19,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:48:19,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:48:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:48:19,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-18 16:48:19,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:48:19,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416825359] [2020-08-18 16:48:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:48:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,137 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 16:48:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:48:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:48:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:48:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 16:48:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:48:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:48:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:48:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:48:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:48:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:48:20,321 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 16:48:20,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416825359] [2020-08-18 16:48:20,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:48:20,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:48:20,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376019586] [2020-08-18 16:48:20,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:48:20,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:48:20,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:48:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:48:20,325 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-18 16:48:25,577 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 210