/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf language data_model -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 0.2.0-0f64333 [2020-10-28 04:42:02,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 04:42:02,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 04:42:02,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 04:42:02,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 04:42:02,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 04:42:02,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 04:42:02,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 04:42:02,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 04:42:02,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 04:42:02,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 04:42:02,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 04:42:02,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 04:42:02,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 04:42:02,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 04:42:02,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 04:42:02,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 04:42:02,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 04:42:02,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 04:42:02,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 04:42:02,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 04:42:02,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 04:42:02,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 04:42:02,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 04:42:02,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 04:42:02,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 04:42:02,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 04:42:02,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 04:42:02,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 04:42:02,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 04:42:02,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 04:42:02,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 04:42:02,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 04:42:02,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 04:42:02,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 04:42:02,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 04:42:02,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 04:42:02,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 04:42:02,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 04:42:02,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 04:42:02,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 04:42:02,676 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 [2020-10-28 04:42:02,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 04:42:02,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 04:42:02,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 04:42:02,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 04:42:02,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 04:42:02,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 04:42:02,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 04:42:02,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 04:42:02,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 04:42:02,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 04:42:02,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 04:42:02,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 04:42:02,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 04:42:02,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 04:42:02,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 04:42:02,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 04:42:02,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 04:42:02,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 04:42:02,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 04:42:02,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 04:42:02,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 04:42:02,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 04:42:02,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 04:42:02,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 04:42:02,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 04:42:02,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 04:42:02,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-28 04:42:02,735 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 04:42:03,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 04:42:03,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 04:42:03,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 04:42:03,170 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 04:42:03,171 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 04:42:03,172 INFO L432 ainManager$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 [2020-10-28 04:42:03,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9702d52c9/61ee81536fc7442b99bcef0118d472f4/FLAGcc82e249d [2020-10-28 04:42:04,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 04:42:04,208 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 [2020-10-28 04:42:04,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9702d52c9/61ee81536fc7442b99bcef0118d472f4/FLAGcc82e249d [2020-10-28 04:42:04,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9702d52c9/61ee81536fc7442b99bcef0118d472f4 [2020-10-28 04:42:04,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 04:42:04,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 04:42:04,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 04:42:04,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 04:42:04,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 04:42:04,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 04:42:04" (1/1) ... [2020-10-28 04:42:04,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23375520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:04, skipping insertion in model container [2020-10-28 04:42:04,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 04:42:04" (1/1) ... [2020-10-28 04:42:04,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 04:42:04,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 04:42:06,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 04:42:06,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 04:42:06,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 04:42:06,524 INFO L208 MainTranslator]: Completed translation [2020-10-28 04:42:06,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06 WrapperNode [2020-10-28 04:42:06,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 04:42:06,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 04:42:06,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 04:42:06,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 04:42:06,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (1/1) ... [2020-10-28 04:42:06,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (1/1) ... [2020-10-28 04:42:06,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (1/1) ... [2020-10-28 04:42:06,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (1/1) ... [2020-10-28 04:42:06,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (1/1) ... [2020-10-28 04:42:06,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (1/1) ... [2020-10-28 04:42:06,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (1/1) ... [2020-10-28 04:42:06,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 04:42:06,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 04:42:06,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 04:42:06,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 04:42:06,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (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 [2020-10-28 04:42:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 04:42:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 04:42:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 04:42:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-10-28 04:42:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-10-28 04:42:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-10-28 04:42:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-10-28 04:42:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-10-28 04:42:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-10-28 04:42:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-10-28 04:42:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-28 04:42:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-28 04:42:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-28 04:42:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 04:42:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-28 04:42:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-28 04:42:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-28 04:42:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-28 04:42:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-28 04:42:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-28 04:42:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-28 04:42:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-10-28 04:42:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-10-28 04:42:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-10-28 04:42:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-10-28 04:42:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-10-28 04:42:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-10-28 04:42:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-10-28 04:42:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-10-28 04:42:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-10-28 04:42:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-10-28 04:42:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-10-28 04:42:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-10-28 04:42:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-10-28 04:42:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-10-28 04:42:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-10-28 04:42:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-10-28 04:42:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-10-28 04:42:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-10-28 04:42:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2020-10-28 04:42:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_13 [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_14 [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-10-28 04:42:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-10-28 04:42:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-10-28 04:42:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-10-28 04:42:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-10-28 04:42:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-28 04:42:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-10-28 04:42:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-10-28 04:42:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-10-28 04:42:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-10-28 04:42:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-10-28 04:42:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-28 04:42:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-10-28 04:42:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-10-28 04:42:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-10-28 04:42:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-10-28 04:42:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-10-28 04:42:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-10-28 04:42:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-10-28 04:42:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-10-28 04:42:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-10-28 04:42:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-28 04:42:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-10-28 04:42:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-10-28 04:42:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-10-28 04:42:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-10-28 04:42:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-10-28 04:42:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-28 04:42:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 04:42:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-28 04:42:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 04:42:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 04:42:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 04:42:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 04:42:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 04:42:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 04:42:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-28 04:42:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-28 04:42:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-10-28 04:42:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-10-28 04:42:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-10-28 04:42:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-10-28 04:42:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-10-28 04:42:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-10-28 04:42:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-28 04:42:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-28 04:42:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-28 04:42:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-28 04:42:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-28 04:42:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-28 04:42:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-10-28 04:42:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-10-28 04:42:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-10-28 04:42:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-10-28 04:42:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-10-28 04:42:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-10-28 04:42:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 04:42:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 04:42:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 04:42:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-28 04:42:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 04:42:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 04:42:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 04:42:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-10-28 04:42:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-10-28 04:42:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-10-28 04:42:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-10-28 04:42:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-10-28 04:42:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2020-10-28 04:42:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-10-28 04:42:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_13 [2020-10-28 04:42:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_14 [2020-10-28 04:42:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-10-28 04:42:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-10-28 04:42:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-10-28 04:42:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-10-28 04:42:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-10-28 04:42:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-10-28 04:42:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-10-28 04:42:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-10-28 04:42:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-10-28 04:42:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-10-28 04:42:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 04:42:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 04:42:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 04:42:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 04:42:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 04:42:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-10-28 04:42:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-10-28 04:42:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-10-28 04:42:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-28 04:42:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-28 04:42:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-10-28 04:42:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 04:42:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 04:42:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 04:42:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 04:42:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-28 04:42:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-28 04:42:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-28 04:42:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-28 04:42:07,647 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-28 04:42:11,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 04:42:11,133 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-28 04:42:11,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 04:42:11 BoogieIcfgContainer [2020-10-28 04:42:11,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 04:42:11,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 04:42:11,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 04:42:11,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 04:42:11,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 04:42:04" (1/3) ... [2020-10-28 04:42:11,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f71853b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 04:42:11, skipping insertion in model container [2020-10-28 04:42:11,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 04:42:06" (2/3) ... [2020-10-28 04:42:11,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f71853b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 04:42:11, skipping insertion in model container [2020-10-28 04:42:11,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 04:42:11" (3/3) ... [2020-10-28 04:42:11,151 INFO L111 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 [2020-10-28 04:42:11,164 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 04:42:11,171 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 04:42:11,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 04:42:11,233 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 04:42:11,233 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 04:42:11,233 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 04:42:11,233 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 04:42:11,235 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 04:42:11,235 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 04:42:11,235 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 04:42:11,236 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 04:42:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states. [2020-10-28 04:42:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 04:42:11,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 04:42:11,300 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] [2020-10-28 04:42:11,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 04:42:11,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 04:42:11,309 INFO L82 PathProgramCache]: Analyzing trace with hash -497735011, now seen corresponding path program 1 times [2020-10-28 04:42:11,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 04:42:11,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935811064] [2020-10-28 04:42:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 04:42:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:17,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:17,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 04:42:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 04:42:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-28 04:42:17,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 04:42:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 04:42:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 04:42:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 04:42:19,080 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-28 04:42:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:42:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:19,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:19,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:42:19,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 04:42:19,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:42:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 04:42:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:19,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:19,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:19,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:42:19,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 04:42:19,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:42:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:19,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:42:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:19,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:42:19,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 04:42:19,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:42:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:19,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 04:42:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:19,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:19,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 04:42:19,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 04:42:19,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 04:42:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 04:42:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 04:42:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:19,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:42:19,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 04:42:19,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 04:42:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 04:42:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 04:42:19,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935811064] [2020-10-28 04:42:19,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 04:42:19,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 04:42:19,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317572] [2020-10-28 04:42:19,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 04:42:19,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 04:42:19,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 04:42:19,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 04:42:19,541 INFO L87 Difference]: Start difference. First operand 628 states. Second operand 6 states. [2020-10-28 04:42:25,513 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 540 [2020-10-28 04:42:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 04:42:39,891 INFO L93 Difference]: Finished difference Result 1426 states and 2079 transitions. [2020-10-28 04:42:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 04:42:39,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-28 04:42:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 04:42:39,923 INFO L225 Difference]: With dead ends: 1426 [2020-10-28 04:42:39,923 INFO L226 Difference]: Without dead ends: 866 [2020-10-28 04:42:39,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 04:42:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-28 04:42:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 602. [2020-10-28 04:42:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-10-28 04:42:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 826 transitions. [2020-10-28 04:42:40,238 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 826 transitions. Word has length 38 [2020-10-28 04:42:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 04:42:40,239 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 826 transitions. [2020-10-28 04:42:40,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 04:42:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 826 transitions. [2020-10-28 04:42:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 04:42:40,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 04:42:40,251 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, 1, 1] [2020-10-28 04:42:40,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 04:42:40,252 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 04:42:40,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 04:42:40,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1217157432, now seen corresponding path program 1 times [2020-10-28 04:42:40,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 04:42:40,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345763198] [2020-10-28 04:42:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 04:42:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:45,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:45,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 04:42:45,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 04:42:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 04:42:45,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 04:42:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 04:42:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 04:42:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:47,382 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-28 04:42:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:42:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:47,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:47,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:42:47,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 04:42:47,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:42:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:47,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 04:42:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:47,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:47,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:42:47,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 04:42:47,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:42:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:42:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:47,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:42:47,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 04:42:47,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:42:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 04:42:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:47,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 04:42:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 04:42:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 04:42:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 04:42:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 04:42:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 04:42:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 04:42:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 04:42:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:48,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:48,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:48,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:42:48,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 04:42:48,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 04:42:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 04:42:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 04:42:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 04:42:48,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 04:42:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:42:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:42:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:42:48,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:42:48,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:42:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 04:42:48,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:42:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:42:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 04:42:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:42:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:42:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 04:42:48,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345763198] [2020-10-28 04:42:48,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 04:42:48,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 04:42:48,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032239749] [2020-10-28 04:42:48,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 04:42:48,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 04:42:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 04:42:48,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 04:42:48,245 INFO L87 Difference]: Start difference. First operand 602 states and 826 transitions. Second operand 7 states. [2020-10-28 04:42:50,313 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 541 [2020-10-28 04:43:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 04:43:06,584 INFO L93 Difference]: Finished difference Result 1319 states and 1837 transitions. [2020-10-28 04:43:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 04:43:06,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-28 04:43:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 04:43:06,594 INFO L225 Difference]: With dead ends: 1319 [2020-10-28 04:43:06,594 INFO L226 Difference]: Without dead ends: 731 [2020-10-28 04:43:06,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 04:43:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-10-28 04:43:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 604. [2020-10-28 04:43:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-28 04:43:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 828 transitions. [2020-10-28 04:43:06,796 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 828 transitions. Word has length 50 [2020-10-28 04:43:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 04:43:06,797 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 828 transitions. [2020-10-28 04:43:06,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 04:43:06,797 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 828 transitions. [2020-10-28 04:43:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 04:43:06,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 04:43:06,799 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, 1, 1] [2020-10-28 04:43:06,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 04:43:06,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 04:43:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 04:43:06,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1592227091, now seen corresponding path program 1 times [2020-10-28 04:43:06,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 04:43:06,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980807532] [2020-10-28 04:43:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 04:43:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:07,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:11,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:11,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 04:43:11,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 04:43:11,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 04:43:11,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 04:43:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 04:43:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 04:43:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:13,928 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-28 04:43:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:43:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:14,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:14,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:43:14,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-28 04:43:14,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:43:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 04:43:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:14,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:14,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:43:14,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:14,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 04:43:14,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:14,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:14,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:43:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:43:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:14,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:14,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:43:14,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 04:43:14,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:14,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:14,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:43:14,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 04:43:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:14,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:14,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:14,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 04:43:14,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 04:43:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 04:43:14,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 04:43:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 04:43:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 04:43:14,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 04:43:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:14,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:14,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 04:43:14,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 04:43:14,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 04:43:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 04:43:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 04:43:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:15,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 04:43:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:15,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:15,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:43:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 04:43:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 04:43:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 04:43:15,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980807532] [2020-10-28 04:43:15,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 04:43:15,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 04:43:15,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296901708] [2020-10-28 04:43:15,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 04:43:15,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 04:43:15,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 04:43:15,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 04:43:15,077 INFO L87 Difference]: Start difference. First operand 604 states and 828 transitions. Second operand 8 states. [2020-10-28 04:43:17,180 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 541 [2020-10-28 04:43:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 04:43:34,681 INFO L93 Difference]: Finished difference Result 1323 states and 1841 transitions. [2020-10-28 04:43:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 04:43:34,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-28 04:43:34,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 04:43:34,688 INFO L225 Difference]: With dead ends: 1323 [2020-10-28 04:43:34,688 INFO L226 Difference]: Without dead ends: 733 [2020-10-28 04:43:34,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 04:43:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-10-28 04:43:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 606. [2020-10-28 04:43:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-28 04:43:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 830 transitions. [2020-10-28 04:43:34,906 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 830 transitions. Word has length 52 [2020-10-28 04:43:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 04:43:34,906 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 830 transitions. [2020-10-28 04:43:34,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 04:43:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 830 transitions. [2020-10-28 04:43:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 04:43:34,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 04:43:34,908 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 04:43:34,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 04:43:34,909 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 04:43:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 04:43:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1256916526, now seen corresponding path program 2 times [2020-10-28 04:43:34,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 04:43:34,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496091960] [2020-10-28 04:43:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 04:43:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:35,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:40,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:40,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 04:43:40,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 04:43:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-28 04:43:40,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 04:43:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 04:43:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 04:43:40,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:42,094 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-28 04:43:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:43:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:42,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:42,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:43:42,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 04:43:42,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:43:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 04:43:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:42,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:42,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:43:42,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 04:43:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:43:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:43:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:42,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:42,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:43:42,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 04:43:42,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:43:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 04:43:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 04:43:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:42,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:42,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 04:43:42,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 04:43:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 04:43:42,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 04:43:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 04:43:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 04:43:42,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:42,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 04:43:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:42,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:42,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 04:43:42,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 04:43:42,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 04:43:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 04:43:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 04:43:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:43,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 04:43:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:43:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:43:43,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:43:43,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:43:43,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:43:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 04:43:43,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:43:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:43:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 04:43:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:43:43,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:43:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 04:43:43,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496091960] [2020-10-28 04:43:43,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 04:43:43,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 04:43:43,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772942142] [2020-10-28 04:43:43,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 04:43:43,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 04:43:43,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 04:43:43,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 04:43:43,050 INFO L87 Difference]: Start difference. First operand 606 states and 830 transitions. Second operand 9 states. [2020-10-28 04:43:45,043 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 541 [2020-10-28 04:44:03,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 04:44:03,410 INFO L93 Difference]: Finished difference Result 1327 states and 1845 transitions. [2020-10-28 04:44:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 04:44:03,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-28 04:44:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 04:44:03,418 INFO L225 Difference]: With dead ends: 1327 [2020-10-28 04:44:03,418 INFO L226 Difference]: Without dead ends: 735 [2020-10-28 04:44:03,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-28 04:44:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-10-28 04:44:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 608. [2020-10-28 04:44:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-28 04:44:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 832 transitions. [2020-10-28 04:44:03,611 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 832 transitions. Word has length 54 [2020-10-28 04:44:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 04:44:03,614 INFO L481 AbstractCegarLoop]: Abstraction has 608 states and 832 transitions. [2020-10-28 04:44:03,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 04:44:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 832 transitions. [2020-10-28 04:44:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 04:44:03,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 04:44:03,615 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 04:44:03,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 04:44:03,616 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 04:44:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 04:44:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1146010761, now seen corresponding path program 3 times [2020-10-28 04:44:03,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 04:44:03,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562502429] [2020-10-28 04:44:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 04:44:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:08,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:08,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 04:44:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 04:44:08,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 04:44:08,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 04:44:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 04:44:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 04:44:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:10,695 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-28 04:44:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:44:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:10,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:44:10,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 04:44:10,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:44:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 04:44:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:10,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:10,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:44:10,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:10,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 04:44:10,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:44:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:10,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:44:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:44:10,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 04:44:10,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:44:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 04:44:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:11,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:11,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 04:44:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 04:44:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-28 04:44:11,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 04:44:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 04:44:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 04:44:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:11,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 04:44:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:11,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:11,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 04:44:11,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 04:44:11,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 04:44:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 04:44:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 04:44:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 04:44:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 04:44:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:11,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:11,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:44:11,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 04:44:11,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 04:44:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 04:44:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 04:44:11,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562502429] [2020-10-28 04:44:11,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 04:44:11,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 04:44:11,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938331359] [2020-10-28 04:44:11,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 04:44:11,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 04:44:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 04:44:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 04:44:11,875 INFO L87 Difference]: Start difference. First operand 608 states and 832 transitions. Second operand 10 states. [2020-10-28 04:44:13,889 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 541 [2020-10-28 04:44:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 04:44:39,521 INFO L93 Difference]: Finished difference Result 1331 states and 1849 transitions. [2020-10-28 04:44:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 04:44:39,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-28 04:44:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 04:44:39,528 INFO L225 Difference]: With dead ends: 1331 [2020-10-28 04:44:39,529 INFO L226 Difference]: Without dead ends: 737 [2020-10-28 04:44:39,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-28 04:44:39,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-28 04:44:39,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 610. [2020-10-28 04:44:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-10-28 04:44:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 834 transitions. [2020-10-28 04:44:39,716 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 834 transitions. Word has length 56 [2020-10-28 04:44:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 04:44:39,717 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 834 transitions. [2020-10-28 04:44:39,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 04:44:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 834 transitions. [2020-10-28 04:44:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 04:44:39,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 04:44:39,721 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 04:44:39,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 04:44:39,721 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 04:44:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 04:44:39,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1939752996, now seen corresponding path program 4 times [2020-10-28 04:44:39,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 04:44:39,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28201912] [2020-10-28 04:44:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 04:44:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:43,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:44,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 04:44:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 04:44:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 04:44:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 04:44:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 04:44:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 04:44:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:46,799 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-28 04:44:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:44:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:47,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:44:47,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 04:44:47,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:44:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:47,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 04:44:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:47,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:47,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:44:47,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:47,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 04:44:47,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:44:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:47,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:47,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:44:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:47,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:47,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:44:47,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 04:44:47,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:44:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:47,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 04:44:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 04:44:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 04:44:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-28 04:44:47,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 04:44:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 04:44:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 04:44:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 04:44:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:47,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:47,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 04:44:47,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 04:44:47,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 04:44:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 04:44:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 04:44:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 04:44:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:44:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:44:47,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:44:47,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:44:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:44:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 04:44:47,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:44:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:44:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 04:44:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:44:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:44:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 04:44:47,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28201912] [2020-10-28 04:44:47,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 04:44:47,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 04:44:47,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805052334] [2020-10-28 04:44:47,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 04:44:47,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 04:44:47,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 04:44:47,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 04:44:47,916 INFO L87 Difference]: Start difference. First operand 610 states and 834 transitions. Second operand 11 states. [2020-10-28 04:44:49,921 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 541 [2020-10-28 04:44:56,275 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 04:45:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 04:45:13,654 INFO L93 Difference]: Finished difference Result 1335 states and 1853 transitions. [2020-10-28 04:45:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 04:45:13,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-28 04:45:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 04:45:13,661 INFO L225 Difference]: With dead ends: 1335 [2020-10-28 04:45:13,661 INFO L226 Difference]: Without dead ends: 739 [2020-10-28 04:45:13,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-10-28 04:45:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-10-28 04:45:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 612. [2020-10-28 04:45:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-10-28 04:45:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 836 transitions. [2020-10-28 04:45:13,874 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 836 transitions. Word has length 58 [2020-10-28 04:45:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 04:45:13,874 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 836 transitions. [2020-10-28 04:45:13,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 04:45:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 836 transitions. [2020-10-28 04:45:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 04:45:13,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 04:45:13,876 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 04:45:13,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 04:45:13,876 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 04:45:13,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 04:45:13,877 INFO L82 PathProgramCache]: Analyzing trace with hash 221862143, now seen corresponding path program 5 times [2020-10-28 04:45:13,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 04:45:13,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489956998] [2020-10-28 04:45:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 04:45:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:45:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:45:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 04:45:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 04:45:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 04:45:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:45:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 04:45:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 04:45:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 04:45:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:45:21,320 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-28 04:45:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:45:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:45:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:21,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:45:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:45:21,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:45:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 04:45:21,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:45:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:45:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:45:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:45:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:45:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 04:45:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:45:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:45:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 04:45:21,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:45:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 04:45:21,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:45:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:45:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:45:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:45:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:45:21,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 04:45:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:45:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:21,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:45:21,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:45:21,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:45:21,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 04:45:21,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:45:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:45:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 04:45:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:45:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:45:21,627 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 04:45:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 04:45:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:45:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:21,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:45:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 04:45:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 04:45:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-28 04:45:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:45:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 04:45:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 04:45:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 04:45:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:45:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 04:45:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:45:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:45:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 04:45:22,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:45:22,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 04:45:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:45:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 04:45:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 04:45:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 04:45:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:45:22,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 04:45:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 04:45:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 04:45:22,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 04:45:22,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 04:45:22,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 04:45:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 04:45:22,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 04:45:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 04:45:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 04:45:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 04:45:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 04:45:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 04:45:22,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489956998] [2020-10-28 04:45:22,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 04:45:22,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 04:45:22,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525629115] [2020-10-28 04:45:22,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 04:45:22,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 04:45:22,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 04:45:22,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-28 04:45:22,528 INFO L87 Difference]: Start difference. First operand 612 states and 836 transitions. Second operand 12 states. [2020-10-28 04:45:24,769 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 541