/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=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 0.1.25-177f698 [2020-08-22 04:22:00,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:22:00,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:22:00,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:22:00,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:22:00,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:22:00,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:22:00,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:22:00,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:22:00,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:22:00,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:22:00,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:22:00,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:22:00,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:22:00,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:22:00,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:22:00,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:22:00,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:22:00,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:22:00,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:22:00,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:22:00,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:22:00,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:22:00,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:22:00,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:22:00,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:22:00,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:22:00,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:22:00,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:22:00,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:22:00,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:22:00,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:22:00,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:22:00,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:22:00,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:22:00,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:22:00,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:22:00,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:22:00,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:22:00,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:22:00,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:22:00,284 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 [2020-08-22 04:22:00,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:22:00,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:22:00,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:22:00,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:22:00,310 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:22:00,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:22:00,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:22:00,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:22:00,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:22:00,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:22:00,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:22:00,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:22:00,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:22:00,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:22:00,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:22:00,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:22:00,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:22:00,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:22:00,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:22:00,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:22:00,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:22:00,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:22:00,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:22:00,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:22:00,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:22:00,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:22:00,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 04:22:00,314 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 04:22:00,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:22:00,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:22:00,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:22:00,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:22:00,661 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:22:00,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-22 04:22:00,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5416bd2f6/3bf100a842834e7299763b3f918658f4/FLAGdf94f5b45 [2020-08-22 04:22:01,522 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:22:01,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_eem.ko-entry_point.cil.out.i [2020-08-22 04:22:01,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5416bd2f6/3bf100a842834e7299763b3f918658f4/FLAGdf94f5b45 [2020-08-22 04:22:02,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5416bd2f6/3bf100a842834e7299763b3f918658f4 [2020-08-22 04:22:02,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:22:02,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:22:02,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:22:02,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:22:02,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:22:02,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:22:02" (1/1) ... [2020-08-22 04:22:02,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b87509a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:02, skipping insertion in model container [2020-08-22 04:22:02,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:22:02" (1/1) ... [2020-08-22 04:22:02,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:22:02,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:22:03,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:22:03,545 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:22:03,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:22:04,163 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:22:04,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04 WrapperNode [2020-08-22 04:22:04,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:22:04,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:22:04,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:22:04,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:22:04,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (1/1) ... [2020-08-22 04:22:04,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (1/1) ... [2020-08-22 04:22:04,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (1/1) ... [2020-08-22 04:22:04,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (1/1) ... [2020-08-22 04:22:04,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (1/1) ... [2020-08-22 04:22:04,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (1/1) ... [2020-08-22 04:22:04,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (1/1) ... [2020-08-22 04:22:04,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:22:04,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:22:04,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:22:04,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:22:04,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (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 [2020-08-22 04:22:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:22:04,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:22:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2020-08-22 04:22:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2020-08-22 04:22:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2020-08-22 04:22:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2020-08-22 04:22:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2020-08-22 04:22:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2020-08-22 04:22:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-22 04:22:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-22 04:22:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-22 04:22:04,494 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-22 04:22:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2020-08-22 04:22:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2020-08-22 04:22:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2020-08-22 04:22:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-22 04:22:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2020-08-22 04:22:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:22:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 04:22:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 04:22:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 04:22:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 04:22:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 04:22:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 04:22:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 04:22:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 04:22:04,500 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-22 04:22:04,500 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2020-08-22 04:22:04,500 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2020-08-22 04:22:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2020-08-22 04:22:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2020-08-22 04:22:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2020-08-22 04:22:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2020-08-22 04:22:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-08-22 04:22:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_of [2020-08-22 04:22:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd_complete [2020-08-22 04:22:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_linkcmd [2020-08-22 04:22:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_bind [2020-08-22 04:22:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_tx_fixup [2020-08-22 04:22:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_rx_fixup [2020-08-22 04:22:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_init [2020-08-22 04:22:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure eem_driver_exit [2020-08-22 04:22:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2020-08-22 04:22:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2020-08-22 04:22:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:22:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-22 04:22:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-22 04:22:04,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-22 04:22:04,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-22 04:22:04,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-22 04:22:04,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_12 [2020-08-22 04:22:04,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2020-08-22 04:22:04,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-22 04:22:04,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-22 04:22:04,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-22 04:22:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-22 04:22:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-22 04:22:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-22 04:22:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-22 04:22:04,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-22 04:22:04,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-22 04:22:04,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-22 04:22:04,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 04:22:04,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-22 04:22:04,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-22 04:22:04,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-22 04:22:04,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-22 04:22:04,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-22 04:22:04,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 04:22:04,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-22 04:22:04,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2020-08-22 04:22:04,510 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2020-08-22 04:22:04,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-22 04:22:04,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2020-08-22 04:22:04,512 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2020-08-22 04:22:04,512 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-22 04:22:04,512 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2020-08-22 04:22:04,513 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-22 04:22:04,513 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-22 04:22:04,513 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-22 04:22:04,513 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2020-08-22 04:22:04,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-08-22 04:22:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-08-22 04:22:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2020-08-22 04:22:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-08-22 04:22:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-08-22 04:22:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-08-22 04:22:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_device_suggests_idle [2020-08-22 04:22:04,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2020-08-22 04:22:04,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2020-08-22 04:22:04,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2020-08-22 04:22:04,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2020-08-22 04:22:04,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2020-08-22 04:22:04,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2020-08-22 04:22:04,516 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 04:22:04,516 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-22 04:22:04,516 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 04:22:04,516 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2020-08-22 04:22:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:22:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 04:22:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2020-08-22 04:22:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2020-08-22 04:22:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2020-08-22 04:22:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:22:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2020-08-22 04:22:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2020-08-22 04:22:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2020-08-22 04:22:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2020-08-22 04:22:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-22 04:22:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-08-22 04:22:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-22 04:22:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-22 04:22:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:22:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-22 04:22:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-22 04:22:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-22 04:22:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-22 04:22:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-22 04:22:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-22 04:22:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2020-08-22 04:22:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-22 04:22:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:22:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-22 04:22:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2020-08-22 04:22:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2020-08-22 04:22:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:22:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2020-08-22 04:22:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-22 04:22:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-22 04:22:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-22 04:22:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-22 04:22:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2020-08-22 04:22:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2020-08-22 04:22:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-22 04:22:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:22:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 04:22:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:22:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 04:22:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:22:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:22:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 04:22:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:22:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 04:22:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 04:22:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 04:22:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 04:22:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 04:22:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 04:22:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 04:22:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2020-08-22 04:22:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2020-08-22 04:22:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-22 04:22:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-22 04:22:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2020-08-22 04:22:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2020-08-22 04:22:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2020-08-22 04:22:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2020-08-22 04:22:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2020-08-22 04:22:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2020-08-22 04:22:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2020-08-22 04:22:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2020-08-22 04:22:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-08-22 04:22:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_12 [2020-08-22 04:22:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-08-22 04:22:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2020-08-22 04:22:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-08-22 04:22:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-08-22 04:22:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-08-22 04:22:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-08-22 04:22:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2020-08-22 04:22:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure driver_of [2020-08-22 04:22:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2020-08-22 04:22:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2020-08-22 04:22:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2020-08-22 04:22:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2020-08-22 04:22:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_device_suggests_idle [2020-08-22 04:22:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2020-08-22 04:22:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2020-08-22 04:22:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd_complete [2020-08-22 04:22:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure eem_linkcmd [2020-08-22 04:22:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:22:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure eem_bind [2020-08-22 04:22:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure eem_tx_fixup [2020-08-22 04:22:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2020-08-22 04:22:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure eem_rx_fixup [2020-08-22 04:22:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:22:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_init [2020-08-22 04:22:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure eem_driver_exit [2020-08-22 04:22:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2020-08-22 04:22:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-22 04:22:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 04:22:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 04:22:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:22:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-22 04:22:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-22 04:22:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-22 04:22:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-22 04:22:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-22 04:22:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-22 04:22:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-22 04:22:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-22 04:22:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-22 04:22:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-22 04:22:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-22 04:22:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-22 04:22:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-22 04:22:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-22 04:22:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-22 04:22:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 04:22:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:22:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 04:22:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:22:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 04:22:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:22:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-22 04:22:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:22:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-22 04:22:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-22 04:22:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-22 04:22:05,228 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 04:22:07,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:22:07,359 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 04:22:07,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:22:07 BoogieIcfgContainer [2020-08-22 04:22:07,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:22:07,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:22:07,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:22:07,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:22:07,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:22:02" (1/3) ... [2020-08-22 04:22:07,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd7cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:22:07, skipping insertion in model container [2020-08-22 04:22:07,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:04" (2/3) ... [2020-08-22 04:22:07,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd7cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:22:07, skipping insertion in model container [2020-08-22 04:22:07,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:22:07" (3/3) ... [2020-08-22 04:22:07,386 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 [2020-08-22 04:22:07,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:22:07,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:22:07,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:22:07,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:22:07,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:22:07,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:22:07,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:22:07,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:22:07,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:22:07,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:22:07,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:22:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states. [2020-08-22 04:22:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 04:22:07,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:07,535 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] [2020-08-22 04:22:07,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:07,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1715961346, now seen corresponding path program 1 times [2020-08-22 04:22:07,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:07,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487849641] [2020-08-22 04:22:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,473 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:22:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:22:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 04:22:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:22:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 04:22:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 04:22:08,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487849641] [2020-08-22 04:22:08,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:22:08,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 04:22:08,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888766767] [2020-08-22 04:22:08,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:22:08,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:08,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:22:08,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:22:08,783 INFO L87 Difference]: Start difference. First operand 545 states. Second operand 9 states. [2020-08-22 04:22:13,239 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:22:13,535 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:22:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:19,040 INFO L93 Difference]: Finished difference Result 1218 states and 1633 transitions. [2020-08-22 04:22:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:22:19,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-08-22 04:22:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:19,079 INFO L225 Difference]: With dead ends: 1218 [2020-08-22 04:22:19,079 INFO L226 Difference]: Without dead ends: 705 [2020-08-22 04:22:19,087 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 [2020-08-22 04:22:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-08-22 04:22:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 493. [2020-08-22 04:22:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-22 04:22:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 598 transitions. [2020-08-22 04:22:19,243 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 598 transitions. Word has length 66 [2020-08-22 04:22:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:19,244 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 598 transitions. [2020-08-22 04:22:19,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:22:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 598 transitions. [2020-08-22 04:22:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-22 04:22:19,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:19,248 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] [2020-08-22 04:22:19,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:22:19,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1313680390, now seen corresponding path program 1 times [2020-08-22 04:22:19,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:19,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551766119] [2020-08-22 04:22:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,607 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:22:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:22:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:22:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:22:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 04:22:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 04:22:19,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551766119] [2020-08-22 04:22:19,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:22:19,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:22:19,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298058782] [2020-08-22 04:22:19,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:22:19,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:19,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:22:19,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:22:19,823 INFO L87 Difference]: Start difference. First operand 493 states and 598 transitions. Second operand 10 states. [2020-08-22 04:22:24,370 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:22:30,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:30,612 INFO L93 Difference]: Finished difference Result 1183 states and 1526 transitions. [2020-08-22 04:22:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:22:30,613 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-22 04:22:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:30,620 INFO L225 Difference]: With dead ends: 1183 [2020-08-22 04:22:30,621 INFO L226 Difference]: Without dead ends: 706 [2020-08-22 04:22:30,624 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 [2020-08-22 04:22:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-08-22 04:22:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 494. [2020-08-22 04:22:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-22 04:22:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 599 transitions. [2020-08-22 04:22:30,729 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 599 transitions. Word has length 68 [2020-08-22 04:22:30,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:30,730 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 599 transitions. [2020-08-22 04:22:30,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:22:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 599 transitions. [2020-08-22 04:22:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 04:22:30,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:30,733 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] [2020-08-22 04:22:30,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:22:30,733 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:30,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1981821054, now seen corresponding path program 2 times [2020-08-22 04:22:30,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:30,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914299101] [2020-08-22 04:22:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,147 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:22:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:22:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:22:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:22:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 04:22:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 04:22:31,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914299101] [2020-08-22 04:22:31,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:22:31,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 04:22:31,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569755121] [2020-08-22 04:22:31,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:22:31,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:31,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:22:31,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:22:31,352 INFO L87 Difference]: Start difference. First operand 494 states and 599 transitions. Second operand 11 states. [2020-08-22 04:22:37,416 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:22:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:43,715 INFO L93 Difference]: Finished difference Result 1185 states and 1528 transitions. [2020-08-22 04:22:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:22:43,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-22 04:22:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:43,726 INFO L225 Difference]: With dead ends: 1185 [2020-08-22 04:22:43,727 INFO L226 Difference]: Without dead ends: 707 [2020-08-22 04:22:43,729 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 [2020-08-22 04:22:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-22 04:22:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 495. [2020-08-22 04:22:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-22 04:22:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 600 transitions. [2020-08-22 04:22:43,831 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 600 transitions. Word has length 70 [2020-08-22 04:22:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:43,834 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 600 transitions. [2020-08-22 04:22:43,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:22:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 600 transitions. [2020-08-22 04:22:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 04:22:43,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:43,837 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] [2020-08-22 04:22:43,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:22:43,838 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:43,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:43,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1738197126, now seen corresponding path program 3 times [2020-08-22 04:22:43,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:43,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510852330] [2020-08-22 04:22:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,403 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:22:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:22:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:22:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:22:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 04:22:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 04:22:44,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510852330] [2020-08-22 04:22:44,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:22:44,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:22:44,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389577142] [2020-08-22 04:22:44,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:22:44,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:44,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:22:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:22:44,725 INFO L87 Difference]: Start difference. First operand 495 states and 600 transitions. Second operand 12 states. [2020-08-22 04:22:50,687 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:22:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:57,794 INFO L93 Difference]: Finished difference Result 1187 states and 1530 transitions. [2020-08-22 04:22:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:22:57,797 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-22 04:22:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:57,802 INFO L225 Difference]: With dead ends: 1187 [2020-08-22 04:22:57,802 INFO L226 Difference]: Without dead ends: 708 [2020-08-22 04:22:57,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-08-22 04:22:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-08-22 04:22:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 496. [2020-08-22 04:22:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-08-22 04:22:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 601 transitions. [2020-08-22 04:22:57,877 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 601 transitions. Word has length 72 [2020-08-22 04:22:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:57,877 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 601 transitions. [2020-08-22 04:22:57,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:22:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 601 transitions. [2020-08-22 04:22:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 04:22:57,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:57,879 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] [2020-08-22 04:22:57,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:22:57,880 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1118642434, now seen corresponding path program 4 times [2020-08-22 04:22:57,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:57,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851322833] [2020-08-22 04:22:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,296 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:22:58,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:22:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:22:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:22:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:22:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-22 04:22:58,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851322833] [2020-08-22 04:22:58,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:58,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:22:58,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594892766] [2020-08-22 04:22:58,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:22:58,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:22:58,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:22:58,501 INFO L87 Difference]: Start difference. First operand 496 states and 601 transitions. Second operand 8 states. [2020-08-22 04:23:03,947 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 210