/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:03:40,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:03:40,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:03:40,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:03:40,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:03:40,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:03:40,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:03:40,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:03:40,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:03:40,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:03:40,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:03:40,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:03:40,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:03:40,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:03:40,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:03:40,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:03:40,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:03:40,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:03:40,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:03:40,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:03:40,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:03:40,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:03:40,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:03:40,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:03:40,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:03:40,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:03:40,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:03:40,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:03:40,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:03:40,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:03:40,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:03:40,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:03:40,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:03:40,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:03:40,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:03:40,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:03:40,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:03:40,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:03:40,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:03:40,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:03:40,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:03:40,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:03:40,924 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:03:40,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:03:40,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:03:40,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:03:40,930 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:03:40,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:03:40,930 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:03:40,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:03:40,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:03:40,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:03:40,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:03:40,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:03:40,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:03:40,932 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:03:40,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:03:40,932 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:03:40,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:03:40,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:03:40,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:03:40,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:03:40,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:03:40,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:03:40,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:03:40,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:03:40,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:03:40,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:03:40,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:03:40,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:03:40,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:03:41,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:03:41,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:03:41,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:03:41,236 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:03:41,237 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:03:41,238 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-11-06 22:03:41,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7892d183/31928015ee7a48548ddbd5c013a8cef1/FLAG7eb86ddf9 [2019-11-06 22:03:41,840 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:03:41,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-11-06 22:03:41,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7892d183/31928015ee7a48548ddbd5c013a8cef1/FLAG7eb86ddf9 [2019-11-06 22:03:42,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7892d183/31928015ee7a48548ddbd5c013a8cef1 [2019-11-06 22:03:42,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:03:42,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:03:42,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:03:42,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:03:42,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:03:42,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657e4106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42, skipping insertion in model container [2019-11-06 22:03:42,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,108 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:03:42,148 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:03:42,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:03:42,564 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:03:42,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:03:42,776 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:03:42,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42 WrapperNode [2019-11-06 22:03:42,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:03:42,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:03:42,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:03:42,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:03:42,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... [2019-11-06 22:03:42,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:03:42,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:03:42,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:03:42,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:03:42,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 22:03:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:03:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:03:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:03:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:03:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:03:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:03:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:03:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:03:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:03:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:03:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:03:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:03:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:03:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:03:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:03:42,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:03:42,936 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:03:42,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:03:42,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:03:42,936 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:03:42,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:03:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:03:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:03:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:03:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:03:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:03:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:03:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:03:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:03:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:03:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:03:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:03:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:03:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:03:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:03:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:03:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:03:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:03:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:03:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:03:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:03:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:03:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:03:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:03:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:03:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:03:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:03:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:03:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:03:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:03:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:03:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:03:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:03:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:03:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:03:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:03:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:03:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:03:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:03:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:03:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:03:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:03:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:03:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:03:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:03:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:03:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:03:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:03:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:03:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:03:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:03:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:03:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:03:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:03:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:03:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:03:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:03:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:03:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:03:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:03:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:03:44,073 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:03:44,073 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:03:44,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:44 BoogieIcfgContainer [2019-11-06 22:03:44,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:03:44,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:03:44,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:03:44,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:03:44,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:42" (1/3) ... [2019-11-06 22:03:44,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8f88d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:44, skipping insertion in model container [2019-11-06 22:03:44,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42" (2/3) ... [2019-11-06 22:03:44,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8f88d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:44, skipping insertion in model container [2019-11-06 22:03:44,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:44" (3/3) ... [2019-11-06 22:03:44,085 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2019-11-06 22:03:44,095 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:03:44,104 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:03:44,116 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:03:44,145 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:03:44,145 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:03:44,145 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:03:44,146 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:03:44,146 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:03:44,146 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:03:44,146 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:03:44,146 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:03:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-11-06 22:03:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:03:44,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:44,188 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:44,193 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:44,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1045855625, now seen corresponding path program 1 times [2019-11-06 22:03:44,209 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:44,210 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104037061] [2019-11-06 22:03:44,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:44,930 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:45,035 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104037061] [2019-11-06 22:03:45,036 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:45,036 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:03:45,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622333215] [2019-11-06 22:03:45,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:03:45,043 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:03:45,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:03:45,061 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2019-11-06 22:03:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:46,360 INFO L93 Difference]: Finished difference Result 335 states and 435 transitions. [2019-11-06 22:03:46,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:03:46,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:03:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:46,378 INFO L225 Difference]: With dead ends: 335 [2019-11-06 22:03:46,378 INFO L226 Difference]: Without dead ends: 180 [2019-11-06 22:03:46,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:03:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-11-06 22:03:46,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2019-11-06 22:03:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-06 22:03:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2019-11-06 22:03:46,477 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2019-11-06 22:03:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:46,477 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2019-11-06 22:03:46,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:03:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2019-11-06 22:03:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:03:46,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:46,481 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:46,482 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:46,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:46,482 INFO L82 PathProgramCache]: Analyzing trace with hash -334246685, now seen corresponding path program 1 times [2019-11-06 22:03:46,482 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:46,483 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348177349] [2019-11-06 22:03:46,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,888 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:46,927 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348177349] [2019-11-06 22:03:46,928 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:46,928 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:03:46,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37080406] [2019-11-06 22:03:46,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:03:46,930 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:46,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:03:46,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:03:46,931 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 4 states. [2019-11-06 22:03:47,414 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:03:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:48,392 INFO L93 Difference]: Finished difference Result 268 states and 326 transitions. [2019-11-06 22:03:48,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:03:48,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:03:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:48,396 INFO L225 Difference]: With dead ends: 268 [2019-11-06 22:03:48,396 INFO L226 Difference]: Without dead ends: 164 [2019-11-06 22:03:48,398 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:03:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-06 22:03:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-11-06 22:03:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-06 22:03:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-11-06 22:03:48,438 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2019-11-06 22:03:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:48,439 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-11-06 22:03:48,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:03:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-11-06 22:03:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 22:03:48,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:48,441 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:48,442 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash 20699943, now seen corresponding path program 1 times [2019-11-06 22:03:48,442 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:48,442 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936847233] [2019-11-06 22:03:48,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,746 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:48,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936847233] [2019-11-06 22:03:48,798 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:48,799 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:03:48,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967701588] [2019-11-06 22:03:48,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:03:48,800 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:48,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:03:48,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:03:48,800 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2019-11-06 22:03:49,120 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:50,039 INFO L93 Difference]: Finished difference Result 277 states and 340 transitions. [2019-11-06 22:03:50,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:03:50,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 22:03:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:50,043 INFO L225 Difference]: With dead ends: 277 [2019-11-06 22:03:50,043 INFO L226 Difference]: Without dead ends: 164 [2019-11-06 22:03:50,045 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:03:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-06 22:03:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-11-06 22:03:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-06 22:03:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-11-06 22:03:50,077 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 51 [2019-11-06 22:03:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:50,077 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-11-06 22:03:50,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:03:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-11-06 22:03:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-06 22:03:50,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:50,080 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:50,080 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:50,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash 134260403, now seen corresponding path program 1 times [2019-11-06 22:03:50,081 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:50,081 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288126978] [2019-11-06 22:03:50,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,373 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:50,466 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288126978] [2019-11-06 22:03:50,466 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:50,466 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:03:50,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024589050] [2019-11-06 22:03:50,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:03:50,467 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:50,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:03:50,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:03:50,468 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 6 states. [2019-11-06 22:03:50,848 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:52,080 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:03:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:52,934 INFO L93 Difference]: Finished difference Result 375 states and 463 transitions. [2019-11-06 22:03:52,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:03:52,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2019-11-06 22:03:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:52,938 INFO L225 Difference]: With dead ends: 375 [2019-11-06 22:03:52,938 INFO L226 Difference]: Without dead ends: 262 [2019-11-06 22:03:52,939 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:03:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-11-06 22:03:52,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 221. [2019-11-06 22:03:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-06 22:03:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 250 transitions. [2019-11-06 22:03:52,983 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 250 transitions. Word has length 69 [2019-11-06 22:03:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:52,983 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 250 transitions. [2019-11-06 22:03:52,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:03:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 250 transitions. [2019-11-06 22:03:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-06 22:03:52,986 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:52,987 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:52,987 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:52,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1484828875, now seen corresponding path program 1 times [2019-11-06 22:03:52,987 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:52,988 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311984124] [2019-11-06 22:03:52,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,310 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:53,445 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311984124] [2019-11-06 22:03:53,445 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:53,446 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:03:53,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083873059] [2019-11-06 22:03:53,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:03:53,447 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:53,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:03:53,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:03:53,448 INFO L87 Difference]: Start difference. First operand 221 states and 250 transitions. Second operand 12 states. [2019-11-06 22:03:54,156 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:54,516 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:54,783 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:55,057 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:55,705 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:03:56,752 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:57,062 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:57,344 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:57,609 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:03:57,900 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:58,198 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:59,625 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:00,059 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:01,287 INFO L93 Difference]: Finished difference Result 762 states and 974 transitions. [2019-11-06 22:04:01,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:04:01,290 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-11-06 22:04:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:01,295 INFO L225 Difference]: With dead ends: 762 [2019-11-06 22:04:01,296 INFO L226 Difference]: Without dead ends: 565 [2019-11-06 22:04:01,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:04:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2019-11-06 22:04:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 507. [2019-11-06 22:04:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-11-06 22:04:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 594 transitions. [2019-11-06 22:04:01,401 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 594 transitions. Word has length 83 [2019-11-06 22:04:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:01,402 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 594 transitions. [2019-11-06 22:04:01,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:04:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 594 transitions. [2019-11-06 22:04:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-06 22:04:01,405 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:01,406 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:01,406 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash -638767917, now seen corresponding path program 1 times [2019-11-06 22:04:01,407 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:01,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646874499] [2019-11-06 22:04:01,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,682 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 22:04:01,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646874499] [2019-11-06 22:04:01,906 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313214388] [2019-11-06 22:04:01,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-06 22:04:02,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:02,304 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:02,304 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-11-06 22:04:02,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332112568] [2019-11-06 22:04:02,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:02,305 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:02,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:02,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:04:02,306 INFO L87 Difference]: Start difference. First operand 507 states and 594 transitions. Second operand 8 states. [2019-11-06 22:04:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:03,748 INFO L93 Difference]: Finished difference Result 1294 states and 1682 transitions. [2019-11-06 22:04:03,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:04:03,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2019-11-06 22:04:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:03,759 INFO L225 Difference]: With dead ends: 1294 [2019-11-06 22:04:03,759 INFO L226 Difference]: Without dead ends: 918 [2019-11-06 22:04:03,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:04:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2019-11-06 22:04:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 844. [2019-11-06 22:04:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2019-11-06 22:04:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1035 transitions. [2019-11-06 22:04:03,942 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1035 transitions. Word has length 139 [2019-11-06 22:04:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:03,943 INFO L462 AbstractCegarLoop]: Abstraction has 844 states and 1035 transitions. [2019-11-06 22:04:03,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:03,943 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1035 transitions. [2019-11-06 22:04:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-06 22:04:03,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:03,946 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:04,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:04,153 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:04,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2031940663, now seen corresponding path program 1 times [2019-11-06 22:04:04,154 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:04,154 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059036329] [2019-11-06 22:04:04,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,438 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:04:04,626 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059036329] [2019-11-06 22:04:04,627 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441308390] [2019-11-06 22:04:04,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:04,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:04:04,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:04:04,866 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:04,866 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-11-06 22:04:04,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877450925] [2019-11-06 22:04:04,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:04:04,867 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:04,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:04:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:04:04,867 INFO L87 Difference]: Start difference. First operand 844 states and 1035 transitions. Second operand 6 states. [2019-11-06 22:04:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:05,046 INFO L93 Difference]: Finished difference Result 1684 states and 2114 transitions. [2019-11-06 22:04:05,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:04:05,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2019-11-06 22:04:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:05,052 INFO L225 Difference]: With dead ends: 1684 [2019-11-06 22:04:05,052 INFO L226 Difference]: Without dead ends: 864 [2019-11-06 22:04:05,056 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:04:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2019-11-06 22:04:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2019-11-06 22:04:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2019-11-06 22:04:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1059 transitions. [2019-11-06 22:04:05,212 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1059 transitions. Word has length 131 [2019-11-06 22:04:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:05,212 INFO L462 AbstractCegarLoop]: Abstraction has 864 states and 1059 transitions. [2019-11-06 22:04:05,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:04:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1059 transitions. [2019-11-06 22:04:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-06 22:04:05,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:05,215 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:05,419 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:05,420 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:05,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1791700917, now seen corresponding path program 1 times [2019-11-06 22:04:05,421 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:05,421 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071384276] [2019-11-06 22:04:05,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,706 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:04:05,939 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071384276] [2019-11-06 22:04:05,940 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316063093] [2019-11-06 22:04:05,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:04:06,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:04:06,250 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:06,250 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-11-06 22:04:06,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966912757] [2019-11-06 22:04:06,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:04:06,251 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:06,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:04:06,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:06,252 INFO L87 Difference]: Start difference. First operand 864 states and 1059 transitions. Second operand 5 states. [2019-11-06 22:04:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:06,425 INFO L93 Difference]: Finished difference Result 1573 states and 1972 transitions. [2019-11-06 22:04:06,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:06,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-11-06 22:04:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:06,431 INFO L225 Difference]: With dead ends: 1573 [2019-11-06 22:04:06,431 INFO L226 Difference]: Without dead ends: 733 [2019-11-06 22:04:06,434 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-11-06 22:04:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2019-11-06 22:04:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2019-11-06 22:04:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 883 transitions. [2019-11-06 22:04:06,570 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 883 transitions. Word has length 131 [2019-11-06 22:04:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:06,570 INFO L462 AbstractCegarLoop]: Abstraction has 733 states and 883 transitions. [2019-11-06 22:04:06,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:04:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 883 transitions. [2019-11-06 22:04:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-06 22:04:06,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:06,573 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:06,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:06,777 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash 900713074, now seen corresponding path program 1 times [2019-11-06 22:04:06,779 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:06,779 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037808227] [2019-11-06 22:04:06,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,166 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 22:04:07,370 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037808227] [2019-11-06 22:04:07,370 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408299601] [2019-11-06 22:04:07,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:07,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:04:07,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:07,713 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:04:07,713 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-11-06 22:04:07,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784975048] [2019-11-06 22:04:07,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 22:04:07,714 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:07,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 22:04:07,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:04:07,715 INFO L87 Difference]: Start difference. First operand 733 states and 883 transitions. Second operand 20 states. [2019-11-06 22:04:08,635 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:09,662 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:09,993 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:10,462 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:12,478 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:12,882 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:13,200 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:13,512 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:14,083 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2019-11-06 22:04:14,433 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:14,756 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:15,019 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:15,300 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:15,862 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2019-11-06 22:04:16,198 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:04:16,517 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:04:17,641 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:17,956 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:18,256 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:18,527 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:18,854 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:19,139 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:19,436 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:19,775 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:20,093 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191