/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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 03:11:21,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 03:11:21,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 03:11:21,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 03:11:21,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 03:11:21,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 03:11:21,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 03:11:21,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 03:11:21,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 03:11:21,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 03:11:21,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 03:11:21,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 03:11:21,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 03:11:21,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 03:11:21,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 03:11:21,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 03:11:21,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 03:11:21,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 03:11:21,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 03:11:21,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 03:11:21,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 03:11:21,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 03:11:21,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 03:11:21,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 03:11:21,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 03:11:21,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 03:11:21,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 03:11:21,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 03:11:21,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 03:11:21,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 03:11:21,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 03:11:21,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 03:11:21,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 03:11:21,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 03:11:21,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 03:11:21,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 03:11:21,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 03:11:21,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 03:11:21,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 03:11:21,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 03:11:21,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 03:11:21,936 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 03:11:21,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 03:11:21,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 03:11:21,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 03:11:21,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 03:11:21,964 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 03:11:21,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 03:11:21,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 03:11:21,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 03:11:21,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 03:11:21,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 03:11:21,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 03:11:21,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 03:11:21,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 03:11:21,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 03:11:21,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 03:11:21,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 03:11:21,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 03:11:21,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 03:11:21,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 03:11:21,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 03:11:21,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 03:11:21,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 03:11:21,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 03:11:21,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 03:11:21,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 03:11:21,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 03:11:21,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-28 03:11:21,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 03:11:22,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 03:11:22,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 03:11:22,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 03:11:22,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 03:11:22,376 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 03:11:22,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-10-28 03:11:22,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488454a57/76f0642b550f489ab8b795d5d1f7d3b8/FLAG845109cdc [2020-10-28 03:11:23,395 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 03:11:23,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-10-28 03:11:23,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488454a57/76f0642b550f489ab8b795d5d1f7d3b8/FLAG845109cdc [2020-10-28 03:11:23,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488454a57/76f0642b550f489ab8b795d5d1f7d3b8 [2020-10-28 03:11:23,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 03:11:23,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 03:11:23,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 03:11:23,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 03:11:23,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 03:11:23,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:11:23" (1/1) ... [2020-10-28 03:11:23,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727792a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:23, skipping insertion in model container [2020-10-28 03:11:23,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:11:23" (1/1) ... [2020-10-28 03:11:23,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 03:11:24,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 03:11:25,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 03:11:25,109 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 03:11:25,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 03:11:25,550 INFO L208 MainTranslator]: Completed translation [2020-10-28 03:11:25,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25 WrapperNode [2020-10-28 03:11:25,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 03:11:25,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 03:11:25,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 03:11:25,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 03:11:25,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (1/1) ... [2020-10-28 03:11:25,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (1/1) ... [2020-10-28 03:11:25,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (1/1) ... [2020-10-28 03:11:25,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (1/1) ... [2020-10-28 03:11:25,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (1/1) ... [2020-10-28 03:11:25,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (1/1) ... [2020-10-28 03:11:25,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (1/1) ... [2020-10-28 03:11:25,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 03:11:25,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 03:11:25,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 03:11:25,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 03:11:25,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (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 03:11:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 03:11:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 03:11:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-28 03:11:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 03:11:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-10-28 03:11:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-10-28 03:11:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-10-28 03:11:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-10-28 03:11:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-10-28 03:11:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-10-28 03:11:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-10-28 03:11:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-10-28 03:11:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-28 03:11:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-28 03:11:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-28 03:11:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 03:11:25,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-28 03:11:25,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-28 03:11:25,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-28 03:11:25,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-28 03:11:25,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-28 03:11:25,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-28 03:11:25,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-28 03:11:25,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-10-28 03:11:25,951 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-10-28 03:11:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-10-28 03:11:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-10-28 03:11:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-10-28 03:11:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-10-28 03:11:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-10-28 03:11:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-10-28 03:11:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-10-28 03:11:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-10-28 03:11:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-10-28 03:11:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 03:11:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_2 [2020-10-28 03:11:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_3 [2020-10-28 03:11:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_4 [2020-10-28 03:11:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-10-28 03:11:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-10-28 03:11:25,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-10-28 03:11:25,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-10-28 03:11:25,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-10-28 03:11:25,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-10-28 03:11:25,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-10-28 03:11:25,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-10-28 03:11:25,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-10-28 03:11:25,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-10-28 03:11:25,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-10-28 03:11:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-10-28 03:11:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-10-28 03:11:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-10-28 03:11:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-28 03:11:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-10-28 03:11:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-10-28 03:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-10-28 03:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-10-28 03:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-10-28 03:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-10-28 03:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-10-28 03:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-10-28 03:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-10-28 03:11:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-28 03:11:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-28 03:11:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-10-28 03:11:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-10-28 03:11:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-10-28 03:11:25,961 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-10-28 03:11:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-10-28 03:11:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-28 03:11:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 03:11:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-28 03:11:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 03:11:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 03:11:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 03:11:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 03:11:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 03:11:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 03:11:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-28 03:11:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-28 03:11:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-10-28 03:11:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-10-28 03:11:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-10-28 03:11:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-10-28 03:11:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-10-28 03:11:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-10-28 03:11:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-10-28 03:11:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-28 03:11:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-10-28 03:11:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_2 [2020-10-28 03:11:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-10-28 03:11:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_3 [2020-10-28 03:11:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_4 [2020-10-28 03:11:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-10-28 03:11:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-10-28 03:11:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-28 03:11:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-28 03:11:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-28 03:11:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-28 03:11:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-28 03:11:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-28 03:11:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 03:11:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 03:11:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 03:11:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-28 03:11:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 03:11:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 03:11:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 03:11:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-28 03:11:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-28 03:11:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-28 03:11:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-28 03:11:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-10-28 03:11:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-10-28 03:11:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-10-28 03:11:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-10-28 03:11:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-10-28 03:11:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-10-28 03:11:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-10-28 03:11:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-10-28 03:11:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-10-28 03:11:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-10-28 03:11:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-10-28 03:11:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-10-28 03:11:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-10-28 03:11:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-10-28 03:11:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-10-28 03:11:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-10-28 03:11:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-10-28 03:11:25,981 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-10-28 03:11:25,982 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-10-28 03:11:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-10-28 03:11:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 03:11:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 03:11:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 03:11:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 03:11:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 03:11:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-10-28 03:11:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-10-28 03:11:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-10-28 03:11:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-28 03:11:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-28 03:11:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 03:11:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-10-28 03:11:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-10-28 03:11:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-10-28 03:11:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-10-28 03:11:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-10-28 03:11:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-10-28 03:11:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-10-28 03:11:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-28 03:11:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-28 03:11:26,961 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-28 03:11:30,790 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-10-28 03:11:31,102 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 03:11:31,102 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 03:11:31,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:11:31 BoogieIcfgContainer [2020-10-28 03:11:31,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 03:11:31,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 03:11:31,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 03:11:31,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 03:11:31,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:11:23" (1/3) ... [2020-10-28 03:11:31,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e107ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:11:31, skipping insertion in model container [2020-10-28 03:11:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:11:25" (2/3) ... [2020-10-28 03:11:31,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e107ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:11:31, skipping insertion in model container [2020-10-28 03:11:31,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:11:31" (3/3) ... [2020-10-28 03:11:31,121 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-10-28 03:11:31,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 03:11:31,140 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 03:11:31,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 03:11:31,208 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 03:11:31,208 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 03:11:31,208 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 03:11:31,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 03:11:31,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 03:11:31,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 03:11:31,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 03:11:31,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 03:11:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states. [2020-10-28 03:11:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 03:11:31,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:11:31,268 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] [2020-10-28 03:11:31,268 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:11:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:11:31,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2041011933, now seen corresponding path program 1 times [2020-10-28 03:11:31,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:11:31,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762168086] [2020-10-28 03:11:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:11:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:11:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:11:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 03:11:33,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 03:11:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2053 [2020-10-28 03:11:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:11:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 03:11:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 03:11:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 03:11:33,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 03:11:36,245 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:11:36,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:11:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:11:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:11:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:11:36,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:11:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 03:11:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:11:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:11:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:11:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:11:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:11:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:11:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:11:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:36,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:11:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:11:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:11:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 03:11:36,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:11:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:11:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:11:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:11:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:11:36,619 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-28 03:11:36,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 03:11:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:11:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:36,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:11:36,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 03:11:36,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:11:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 03:11:36,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:11:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:11:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:11:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:11:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:11:36,661 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 03:11:36,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762168086] [2020-10-28 03:11:36,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 03:11:36,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 03:11:36,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407007075] [2020-10-28 03:11:36,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 03:11:36,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:11:36,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 03:11:36,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 03:11:36,702 INFO L87 Difference]: Start difference. First operand 612 states. Second operand 5 states. [2020-10-28 03:11:39,842 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 570 [2020-10-28 03:11:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 03:11:53,030 INFO L93 Difference]: Finished difference Result 1426 states and 2095 transitions. [2020-10-28 03:11:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 03:11:53,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-28 03:11:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 03:11:53,067 INFO L225 Difference]: With dead ends: 1426 [2020-10-28 03:11:53,067 INFO L226 Difference]: Without dead ends: 864 [2020-10-28 03:11:53,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 03:11:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-28 03:11:53,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 600. [2020-10-28 03:11:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-28 03:11:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 828 transitions. [2020-10-28 03:11:53,391 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 828 transitions. Word has length 28 [2020-10-28 03:11:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 03:11:53,392 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 828 transitions. [2020-10-28 03:11:53,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 03:11:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 828 transitions. [2020-10-28 03:11:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 03:11:53,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:11:53,396 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] [2020-10-28 03:11:53,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 03:11:53,396 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:11:53,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:11:53,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1791076540, now seen corresponding path program 1 times [2020-10-28 03:11:53,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:11:53,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599779385] [2020-10-28 03:11:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:11:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:11:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:11:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:11:58,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 03:11:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 03:11:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-28 03:11:58,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:11:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 03:11:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 03:11:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 03:11:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:00,624 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:12:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:12:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:00,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:00,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:12:00,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:00,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 03:12:00,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:12:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:12:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:12:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:12:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:00,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:00,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:12:00,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 03:12:00,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:12:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:12:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:12:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 03:12:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:01,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:01,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 03:12:01,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 03:12:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 03:12:01,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:01,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 03:12:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:12:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 03:12:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 03:12:01,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 03:12:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:01,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:01,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:01,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 03:12:01,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:01,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 03:12:01,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:01,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 03:12:01,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 03:12:01,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 03:12:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:01,357 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 03:12:01,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599779385] [2020-10-28 03:12:01,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 03:12:01,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 03:12:01,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556189626] [2020-10-28 03:12:01,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 03:12:01,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:12:01,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 03:12:01,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 03:12:01,361 INFO L87 Difference]: Start difference. First operand 600 states and 828 transitions. Second operand 7 states. [2020-10-28 03:12:03,398 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 571 [2020-10-28 03:12:06,866 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 573 [2020-10-28 03:12:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 03:12:19,023 INFO L93 Difference]: Finished difference Result 1334 states and 1863 transitions. [2020-10-28 03:12:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 03:12:19,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-28 03:12:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 03:12:19,033 INFO L225 Difference]: With dead ends: 1334 [2020-10-28 03:12:19,033 INFO L226 Difference]: Without dead ends: 744 [2020-10-28 03:12:19,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 03:12:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-28 03:12:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 602. [2020-10-28 03:12:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-10-28 03:12:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 829 transitions. [2020-10-28 03:12:19,270 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 829 transitions. Word has length 40 [2020-10-28 03:12:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 03:12:19,270 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 829 transitions. [2020-10-28 03:12:19,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 03:12:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 829 transitions. [2020-10-28 03:12:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 03:12:19,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:12:19,273 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] [2020-10-28 03:12:19,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 03:12:19,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:12:19,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:12:19,274 INFO L82 PathProgramCache]: Analyzing trace with hash 869801181, now seen corresponding path program 1 times [2020-10-28 03:12:19,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:12:19,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742446069] [2020-10-28 03:12:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:12:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:21,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:22,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:24,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:24,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 03:12:24,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 03:12:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-28 03:12:24,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 03:12:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 03:12:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 03:12:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:26,500 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:12:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:12:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:26,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:26,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:12:26,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:26,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 03:12:26,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:12:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:12:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:12:26,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:12:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:26,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:26,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:12:26,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 03:12:26,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:12:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:12:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:12:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 03:12:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:26,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 03:12:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 03:12:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 03:12:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 03:12:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:12:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 03:12:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 03:12:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:27,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:27,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 03:12:27,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:27,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 03:12:27,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 03:12:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 03:12:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 03:12:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:27,240 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 03:12:27,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742446069] [2020-10-28 03:12:27,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 03:12:27,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 03:12:27,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062268090] [2020-10-28 03:12:27,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 03:12:27,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:12:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 03:12:27,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 03:12:27,245 INFO L87 Difference]: Start difference. First operand 602 states and 829 transitions. Second operand 7 states. [2020-10-28 03:12:29,255 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 571 [2020-10-28 03:12:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 03:12:41,261 INFO L93 Difference]: Finished difference Result 1323 states and 1847 transitions. [2020-10-28 03:12:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 03:12:41,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-28 03:12:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 03:12:41,271 INFO L225 Difference]: With dead ends: 1323 [2020-10-28 03:12:41,272 INFO L226 Difference]: Without dead ends: 731 [2020-10-28 03:12:41,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 03:12:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-10-28 03:12:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 604. [2020-10-28 03:12:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-28 03:12:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 831 transitions. [2020-10-28 03:12:41,451 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 831 transitions. Word has length 42 [2020-10-28 03:12:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 03:12:41,452 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 831 transitions. [2020-10-28 03:12:41,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 03:12:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 831 transitions. [2020-10-28 03:12:41,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 03:12:41,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:12:41,461 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] [2020-10-28 03:12:41,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 03:12:41,461 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:12:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:12:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1434190344, now seen corresponding path program 2 times [2020-10-28 03:12:41,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:12:41,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495910940] [2020-10-28 03:12:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:12:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:46,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:46,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 03:12:46,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 03:12:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 03:12:46,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 03:12:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 03:12:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 03:12:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 03:12:48,638 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:12:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:12:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:48,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:12:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 03:12:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:12:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:12:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:12:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:12:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:12:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 03:12:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:12:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:12:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:12:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 03:12:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:49,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 03:12:49,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 03:12:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 03:12:49,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 03:12:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:12:49,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 03:12:49,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 03:12:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:12:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:12:49,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:12:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 03:12:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:12:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 03:12:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:12:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 03:12:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 03:12:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 03:12:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:12:49,378 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 03:12:49,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495910940] [2020-10-28 03:12:49,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 03:12:49,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 03:12:49,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920058374] [2020-10-28 03:12:49,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 03:12:49,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:12:49,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 03:12:49,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 03:12:49,382 INFO L87 Difference]: Start difference. First operand 604 states and 831 transitions. Second operand 8 states. [2020-10-28 03:12:51,502 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 571 [2020-10-28 03:13:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 03:13:06,975 INFO L93 Difference]: Finished difference Result 1327 states and 1851 transitions. [2020-10-28 03:13:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 03:13:06,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-28 03:13:06,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 03:13:06,981 INFO L225 Difference]: With dead ends: 1327 [2020-10-28 03:13:06,982 INFO L226 Difference]: Without dead ends: 733 [2020-10-28 03:13:06,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 03:13:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-10-28 03:13:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 606. [2020-10-28 03:13:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-28 03:13:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 833 transitions. [2020-10-28 03:13:07,157 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 833 transitions. Word has length 44 [2020-10-28 03:13:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 03:13:07,157 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 833 transitions. [2020-10-28 03:13:07,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 03:13:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 833 transitions. [2020-10-28 03:13:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 03:13:07,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:13:07,159 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] [2020-10-28 03:13:07,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 03:13:07,159 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:13:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:13:07,160 INFO L82 PathProgramCache]: Analyzing trace with hash 633078867, now seen corresponding path program 3 times [2020-10-28 03:13:07,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:13:07,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377012031] [2020-10-28 03:13:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:13:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:08,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:12,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:12,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 03:13:12,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 03:13:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 03:13:12,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 03:13:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 03:13:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 03:13:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 03:13:14,401 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:13:14,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:13:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:14,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:14,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:13:14,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:13:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 03:13:14,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:14,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:13:14,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:13:14,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:13:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:14,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:13:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:14,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:14,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:13:14,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:13:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 03:13:14,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:13:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:13:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:13:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 03:13:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:14,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:14,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 03:13:14,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 03:13:14,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 03:13:14,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 03:13:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:13:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 03:13:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 03:13:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:15,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:15,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 03:13:15,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:13:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 03:13:15,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 03:13:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 03:13:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 03:13:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:15,268 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 03:13:15,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377012031] [2020-10-28 03:13:15,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 03:13:15,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 03:13:15,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34892548] [2020-10-28 03:13:15,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 03:13:15,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:13:15,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 03:13:15,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 03:13:15,270 INFO L87 Difference]: Start difference. First operand 606 states and 833 transitions. Second operand 9 states. [2020-10-28 03:13:17,346 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 571 [2020-10-28 03:13:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 03:13:35,557 INFO L93 Difference]: Finished difference Result 1331 states and 1855 transitions. [2020-10-28 03:13:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 03:13:35,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-28 03:13:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 03:13:35,567 INFO L225 Difference]: With dead ends: 1331 [2020-10-28 03:13:35,568 INFO L226 Difference]: Without dead ends: 735 [2020-10-28 03:13:35,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 03:13:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-10-28 03:13:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 608. [2020-10-28 03:13:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-28 03:13:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 835 transitions. [2020-10-28 03:13:35,766 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 835 transitions. Word has length 46 [2020-10-28 03:13:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 03:13:35,766 INFO L481 AbstractCegarLoop]: Abstraction has 608 states and 835 transitions. [2020-10-28 03:13:35,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 03:13:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 835 transitions. [2020-10-28 03:13:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 03:13:35,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:13:35,768 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] [2020-10-28 03:13:35,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 03:13:35,768 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:13:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:13:35,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1291067410, now seen corresponding path program 4 times [2020-10-28 03:13:35,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:13:35,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846333647] [2020-10-28 03:13:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:13:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:35,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:40,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 03:13:40,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 03:13:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 03:13:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 03:13:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 03:13:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 03:13:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:43,057 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:13:43,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:13:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:43,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:43,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:13:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:13:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 03:13:43,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:13:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:13:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:13:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:13:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:43,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:13:43,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:13:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 03:13:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:13:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:13:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:13:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 03:13:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:43,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:43,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:43,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 03:13:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 03:13:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-28 03:13:43,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 03:13:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:13:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 03:13:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 03:13:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:13:43,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:13:43,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:13:43,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 03:13:43,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:13:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 03:13:43,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:13:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 03:13:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 03:13:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 03:13:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:13:44,145 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 03:13:44,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846333647] [2020-10-28 03:13:44,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 03:13:44,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 03:13:44,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109776342] [2020-10-28 03:13:44,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 03:13:44,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:13:44,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 03:13:44,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 03:13:44,148 INFO L87 Difference]: Start difference. First operand 608 states and 835 transitions. Second operand 10 states. [2020-10-28 03:13:46,215 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 571 [2020-10-28 03:14:02,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 03:14:02,926 INFO L93 Difference]: Finished difference Result 1335 states and 1859 transitions. [2020-10-28 03:14:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 03:14:02,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-28 03:14:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 03:14:02,933 INFO L225 Difference]: With dead ends: 1335 [2020-10-28 03:14:02,933 INFO L226 Difference]: Without dead ends: 737 [2020-10-28 03:14:02,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 03:14:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-28 03:14:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 610. [2020-10-28 03:14:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-10-28 03:14:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 837 transitions. [2020-10-28 03:14:03,135 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 837 transitions. Word has length 48 [2020-10-28 03:14:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 03:14:03,136 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 837 transitions. [2020-10-28 03:14:03,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 03:14:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 837 transitions. [2020-10-28 03:14:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 03:14:03,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:14:03,137 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] [2020-10-28 03:14:03,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 03:14:03,137 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:14:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:14:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash 735264969, now seen corresponding path program 5 times [2020-10-28 03:14:03,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:14:03,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149753606] [2020-10-28 03:14:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:14:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:03,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:08,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 03:14:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:10,480 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:14:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:14:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:10,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:10,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:14:10,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:14:10,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 03:14:10,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:14:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:14:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:14:10,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:14:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:10,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:14:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:14:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 03:14:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:14:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:14:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:14:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 03:14:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:11,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:11,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 03:14:11,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 03:14:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-28 03:14:11,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 03:14:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:14:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 03:14:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:11,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 03:14:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:11,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:11,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 03:14:11,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:14:11,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 03:14:11,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 03:14:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 03:14:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 03:14:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 03:14:11,614 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 03:14:11,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149753606] [2020-10-28 03:14:11,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 03:14:11,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 03:14:11,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993898002] [2020-10-28 03:14:11,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 03:14:11,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:14:11,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 03:14:11,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 03:14:11,619 INFO L87 Difference]: Start difference. First operand 610 states and 837 transitions. Second operand 11 states. [2020-10-28 03:14:13,741 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 571 [2020-10-28 03:14:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 03:14:36,953 INFO L93 Difference]: Finished difference Result 1339 states and 1863 transitions. [2020-10-28 03:14:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 03:14:36,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-28 03:14:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 03:14:36,960 INFO L225 Difference]: With dead ends: 1339 [2020-10-28 03:14:36,960 INFO L226 Difference]: Without dead ends: 739 [2020-10-28 03:14:36,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-28 03:14:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-10-28 03:14:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 612. [2020-10-28 03:14:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-10-28 03:14:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 839 transitions. [2020-10-28 03:14:37,166 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 839 transitions. Word has length 50 [2020-10-28 03:14:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 03:14:37,166 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 839 transitions. [2020-10-28 03:14:37,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 03:14:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 839 transitions. [2020-10-28 03:14:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 03:14:37,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 03:14:37,168 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:14:37,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 03:14:37,168 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 03:14:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 03:14:37,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1874471196, now seen corresponding path program 6 times [2020-10-28 03:14:37,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 03:14:37,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940532414] [2020-10-28 03:14:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 03:14:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:37,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:40,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:42,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:42,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 03:14:42,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 03:14:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 03:14:42,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 03:14:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 03:14:42,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 03:14:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:44,484 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 568 [2020-10-28 03:14:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 03:14:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:44,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 03:14:44,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:14:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 03:14:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:14:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:14:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:14:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 03:14:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:44,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:44,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 03:14:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:14:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 03:14:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 03:14:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 03:14:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 03:14:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 03:14:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:44,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:45,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:45,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 03:14:45,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 03:14:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-28 03:14:45,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 03:14:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 03:14:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 03:14:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 03:14:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 03:14:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 03:14:45,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 03:14:45,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 03:14:45,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 03:14:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 03:14:45,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 03:14:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 03:14:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 03:14:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 03:14:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 03:14:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 03:14:45,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940532414] [2020-10-28 03:14:45,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 03:14:45,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 03:14:45,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528192287] [2020-10-28 03:14:45,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 03:14:45,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 03:14:45,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 03:14:45,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-28 03:14:45,670 INFO L87 Difference]: Start difference. First operand 612 states and 839 transitions. Second operand 12 states. [2020-10-28 03:14:47,858 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 571