/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 13:06:49,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 13:06:49,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 13:06:49,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 13:06:49,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 13:06:49,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 13:06:49,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 13:06:49,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 13:06:49,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 13:06:49,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 13:06:49,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 13:06:49,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 13:06:49,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 13:06:49,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 13:06:49,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 13:06:49,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 13:06:49,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 13:06:49,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 13:06:49,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 13:06:49,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 13:06:49,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 13:06:49,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 13:06:49,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 13:06:49,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 13:06:49,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 13:06:49,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 13:06:49,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 13:06:49,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 13:06:49,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 13:06:49,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 13:06:49,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 13:06:49,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 13:06:49,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 13:06:49,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 13:06:49,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 13:06:49,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 13:06:49,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 13:06:49,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 13:06:49,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 13:06:49,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 13:06:49,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 13:06:49,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-09-21 13:06:49,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 13:06:49,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 13:06:49,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 13:06:49,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 13:06:49,514 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 13:06:49,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 13:06:49,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 13:06:49,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 13:06:49,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 13:06:49,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 13:06:49,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 13:06:49,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 13:06:49,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 13:06:49,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 13:06:49,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 13:06:49,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 13:06:49,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 13:06:49,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 13:06:49,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 13:06:49,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 13:06:49,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 13:06:49,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 13:06:49,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 13:06:49,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 13:06:49,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 13:06:49,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 13:06:49,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 13:06:49,520 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 13:06:49,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 13:06:50,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 13:06:50,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 13:06:50,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 13:06:50,013 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 13:06:50,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 13:06:50,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91b5980a/48a7f0589c0f459784e84a059a54f5d2/FLAGbad57ab92 [2020-09-21 13:06:50,915 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 13:06:50,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 13:06:50,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91b5980a/48a7f0589c0f459784e84a059a54f5d2/FLAGbad57ab92 [2020-09-21 13:06:50,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91b5980a/48a7f0589c0f459784e84a059a54f5d2 [2020-09-21 13:06:51,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 13:06:51,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 13:06:51,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:51,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 13:06:51,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 13:06:51,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:50" (1/1) ... [2020-09-21 13:06:51,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f9529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:51, skipping insertion in model container [2020-09-21 13:06:51,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:50" (1/1) ... [2020-09-21 13:06:51,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 13:06:51,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 13:06:52,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:52,650 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 13:06:52,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:52,918 INFO L208 MainTranslator]: Completed translation [2020-09-21 13:06:52,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52 WrapperNode [2020-09-21 13:06:52,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:52,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 13:06:52,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 13:06:52,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 13:06:52,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... [2020-09-21 13:06:52,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... [2020-09-21 13:06:52,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... [2020-09-21 13:06:52,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... [2020-09-21 13:06:53,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... [2020-09-21 13:06:53,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... [2020-09-21 13:06:53,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... [2020-09-21 13:06:53,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 13:06:53,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 13:06:53,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 13:06:53,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 13:06:53,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 13:06:53,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 13:06:53,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 13:06:53,215 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-09-21 13:06:53,216 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-09-21 13:06:53,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-09-21 13:06:53,216 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-09-21 13:06:53,216 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-09-21 13:06:53,217 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-09-21 13:06:53,217 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-09-21 13:06:53,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-09-21 13:06:53,217 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-09-21 13:06:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-21 13:06:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 13:06:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 13:06:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 13:06:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 13:06:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 13:06:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 13:06:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 13:06:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 13:06:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 13:06:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-09-21 13:06:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-09-21 13:06:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-09-21 13:06:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-09-21 13:06:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-09-21 13:06:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-09-21 13:06:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-09-21 13:06:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-09-21 13:06:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-09-21 13:06:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-09-21 13:06:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-09-21 13:06:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-09-21 13:06:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-09-21 13:06:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-09-21 13:06:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-09-21 13:06:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-09-21 13:06:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-09-21 13:06:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-09-21 13:06:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 13:06:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-09-21 13:06:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-09-21 13:06:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-09-21 13:06:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-09-21 13:06:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-09-21 13:06:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2020-09-21 13:06:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_13 [2020-09-21 13:06:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_14 [2020-09-21 13:06:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-09-21 13:06:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-21 13:06:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-09-21 13:06:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-09-21 13:06:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-09-21 13:06:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-21 13:06:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-21 13:06:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-21 13:06:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-21 13:06:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-09-21 13:06:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 13:06:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-09-21 13:06:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-09-21 13:06:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-09-21 13:06:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-09-21 13:06:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-09-21 13:06:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 13:06:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-09-21 13:06:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-09-21 13:06:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-09-21 13:06:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-09-21 13:06:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-09-21 13:06:53,230 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-09-21 13:06:53,230 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-09-21 13:06:53,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-09-21 13:06:53,230 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-09-21 13:06:53,230 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-09-21 13:06:53,231 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-09-21 13:06:53,231 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-09-21 13:06:53,231 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-09-21 13:06:53,231 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-09-21 13:06:53,231 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-09-21 13:06:53,232 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 13:06:53,232 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 13:06:53,232 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-09-21 13:06:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 13:06:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 13:06:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-09-21 13:06:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-09-21 13:06:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-09-21 13:06:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-09-21 13:06:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-09-21 13:06:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-09-21 13:06:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-09-21 13:06:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-21 13:06:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-09-21 13:06:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-09-21 13:06:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-09-21 13:06:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-09-21 13:06:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-09-21 13:06:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-09-21 13:06:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 13:06:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 13:06:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-09-21 13:06:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-09-21 13:06:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 13:06:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-21 13:06:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-09-21 13:06:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-09-21 13:06:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-09-21 13:06:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-09-21 13:06:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-09-21 13:06:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-09-21 13:06:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 13:06:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 13:06:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 13:06:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 13:06:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 13:06:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 13:06:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 13:06:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 13:06:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 13:06:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 13:06:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 13:06:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 13:06:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 13:06:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-09-21 13:06:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-09-21 13:06:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-09-21 13:06:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-09-21 13:06:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-09-21 13:06:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-09-21 13:06:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-09-21 13:06:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2020-09-21 13:06:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-09-21 13:06:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_13 [2020-09-21 13:06:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_14 [2020-09-21 13:06:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-09-21 13:06:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-09-21 13:06:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-09-21 13:06:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-09-21 13:06:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-09-21 13:06:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-09-21 13:06:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-09-21 13:06:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-09-21 13:06:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-09-21 13:06:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-09-21 13:06:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-09-21 13:06:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-09-21 13:06:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-09-21 13:06:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-09-21 13:06:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-09-21 13:06:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-09-21 13:06:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-09-21 13:06:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 13:06:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 13:06:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 13:06:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 13:06:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 13:06:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 13:06:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-09-21 13:06:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-09-21 13:06:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-09-21 13:06:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 13:06:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 13:06:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 13:06:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-09-21 13:06:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-21 13:06:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-09-21 13:06:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-09-21 13:06:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-09-21 13:06:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-21 13:06:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-21 13:06:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-21 13:06:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-21 13:06:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-09-21 13:06:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-09-21 13:06:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-09-21 13:06:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-09-21 13:06:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-09-21 13:06:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 13:06:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 13:06:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 13:06:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 13:06:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-21 13:06:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-21 13:06:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-21 13:06:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-21 13:06:54,017 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 13:06:57,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 13:06:57,796 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 13:06:57,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:06:57 BoogieIcfgContainer [2020-09-21 13:06:57,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 13:06:57,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 13:06:57,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 13:06:57,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 13:06:57,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 01:06:50" (1/3) ... [2020-09-21 13:06:57,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2c3f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:06:57, skipping insertion in model container [2020-09-21 13:06:57,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:52" (2/3) ... [2020-09-21 13:06:57,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2c3f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:06:57, skipping insertion in model container [2020-09-21 13:06:57,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:06:57" (3/3) ... [2020-09-21 13:06:57,814 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 13:06:57,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 13:06:57,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 13:06:57,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 13:06:57,894 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 13:06:57,894 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 13:06:57,895 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 13:06:57,895 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 13:06:57,895 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 13:06:57,895 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 13:06:57,895 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 13:06:57,895 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 13:06:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states. [2020-09-21 13:06:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 13:06:57,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:06:57,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 13:06:57,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:06:57,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:06:57,951 INFO L82 PathProgramCache]: Analyzing trace with hash -337560205, now seen corresponding path program 1 times [2020-09-21 13:06:57,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:06:57,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212570512] [2020-09-21 13:06:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:06:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:59,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 13:06:59,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-09-21 13:06:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 13:06:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:06:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 13:07:01,295 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 526 [2020-09-21 13:07:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:01,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:01,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:01,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:01,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-21 13:07:01,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:01,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:01,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:01,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:01,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:01,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:01,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 13:07:01,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:01,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:01,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:01,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 13:07:01,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:01,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 13:07:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 13:07:01,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 13:07:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:01,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 13:07:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:01,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:01,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:01,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 13:07:01,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:07:01,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212570512] [2020-09-21 13:07:01,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:01,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 13:07:01,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915578055] [2020-09-21 13:07:01,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 13:07:01,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:01,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 13:07:02,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 13:07:02,004 INFO L87 Difference]: Start difference. First operand 624 states. Second operand 6 states. [2020-09-21 13:07:09,698 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 528 [2020-09-21 13:07:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:21,928 INFO L93 Difference]: Finished difference Result 1420 states and 2070 transitions. [2020-09-21 13:07:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 13:07:21,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-21 13:07:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:21,961 INFO L225 Difference]: With dead ends: 1420 [2020-09-21 13:07:21,961 INFO L226 Difference]: Without dead ends: 864 [2020-09-21 13:07:21,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-21 13:07:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-09-21 13:07:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 600. [2020-09-21 13:07:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-09-21 13:07:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 824 transitions. [2020-09-21 13:07:22,228 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 824 transitions. Word has length 36 [2020-09-21 13:07:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:22,228 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 824 transitions. [2020-09-21 13:07:22,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 13:07:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 824 transitions. [2020-09-21 13:07:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-21 13:07:22,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:22,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 13:07:22,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 13:07:22,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:22,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:22,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1418341137, now seen corresponding path program 1 times [2020-09-21 13:07:22,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:22,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653108549] [2020-09-21 13:07:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:23,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 13:07:23,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-09-21 13:07:23,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-21 13:07:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 13:07:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 13:07:25,278 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 526 [2020-09-21 13:07:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:25,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:25,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:25,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-21 13:07:25,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:25,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:25,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:25,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 13:07:25,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:25,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:25,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:25,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 13:07:25,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 13:07:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:26,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:26,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 13:07:26,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-21 13:07:26,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 13:07:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 13:07:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:26,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:26,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:26,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 13:07:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 13:07:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 13:07:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 13:07:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:26,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:26,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:26,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 13:07:26,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:07:26,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653108549] [2020-09-21 13:07:26,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:26,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 13:07:26,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200097595] [2020-09-21 13:07:26,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 13:07:26,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:26,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 13:07:26,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:07:26,392 INFO L87 Difference]: Start difference. First operand 600 states and 824 transitions. Second operand 7 states. [2020-09-21 13:07:27,824 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 529 [2020-09-21 13:07:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:42,309 INFO L93 Difference]: Finished difference Result 1315 states and 1833 transitions. [2020-09-21 13:07:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 13:07:42,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-09-21 13:07:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:42,316 INFO L225 Difference]: With dead ends: 1315 [2020-09-21 13:07:42,317 INFO L226 Difference]: Without dead ends: 729 [2020-09-21 13:07:42,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 13:07:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-09-21 13:07:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 602. [2020-09-21 13:07:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-09-21 13:07:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 826 transitions. [2020-09-21 13:07:42,469 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 826 transitions. Word has length 48 [2020-09-21 13:07:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:42,470 INFO L479 AbstractCegarLoop]: Abstraction has 602 states and 826 transitions. [2020-09-21 13:07:42,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 13:07:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 826 transitions. [2020-09-21 13:07:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-21 13:07:42,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:42,473 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 13:07:42,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 13:07:42,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:42,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:42,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1569240726, now seen corresponding path program 1 times [2020-09-21 13:07:42,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:42,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291613699] [2020-09-21 13:07:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:43,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:43,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 13:07:43,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1287 [2020-09-21 13:07:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 13:07:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 13:07:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:45,518 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 526 [2020-09-21 13:07:45,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:45,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:46,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:46,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:46,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-21 13:07:46,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:07:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:46,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:46,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:07:46,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 13:07:46,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 13:07:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:46,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:46,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:46,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:46,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 13:07:46,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:46,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 13:07:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:46,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:47,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:47,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 13:07:47,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 13:07:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 13:07:47,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 13:07:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 13:07:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 13:07:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:47,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:47,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:07:47,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-21 13:07:47,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 13:07:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 13:07:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 13:07:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 13:07:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 13:07:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:07:47,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291613699] [2020-09-21 13:07:47,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 13:07:47,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 13:07:47,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195625937] [2020-09-21 13:07:47,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 13:07:47,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:47,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 13:07:47,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 13:07:47,755 INFO L87 Difference]: Start difference. First operand 602 states and 826 transitions. Second operand 9 states.