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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:08:46,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:08:46,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:08:46,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:08:46,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:08:46,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:08:46,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:08:46,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:08:46,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:08:46,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:08:46,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:08:46,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:08:46,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:08:46,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:08:46,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:08:46,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:08:46,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:08:46,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:08:46,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:08:46,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:08:46,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:08:46,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:08:46,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:08:46,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:08:46,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:08:46,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:08:46,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:08:46,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:08:46,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:08:46,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:08:46,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:08:46,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:08:46,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:08:46,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:08:46,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:08:46,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:08:46,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:08:46,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:08:46,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:08:46,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:08:46,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:08:46,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:08:47,006 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:08:47,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:08:47,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:08:47,007 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:08:47,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:08:47,008 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:08:47,008 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:08:47,008 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:08:47,009 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:08:47,009 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:08:47,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:08:47,010 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:08:47,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:08:47,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:08:47,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:08:47,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:08:47,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:08:47,011 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:08:47,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:08:47,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:08:47,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:08:47,012 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:08:47,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:08:47,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:47,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:08:47,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:08:47,013 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:08:47,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:08:47,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:08:47,014 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:08:47,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:08:47,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:08:47,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:08:47,064 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:08:47,064 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:08:47,065 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2019-09-16 17:08:47,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b279170b/2f6ff1b5dd1c46a4bef7362fb32ea18c/FLAGa9829607e [2019-09-16 17:08:47,652 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:08:47,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2019-09-16 17:08:47,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b279170b/2f6ff1b5dd1c46a4bef7362fb32ea18c/FLAGa9829607e [2019-09-16 17:08:47,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b279170b/2f6ff1b5dd1c46a4bef7362fb32ea18c [2019-09-16 17:08:47,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:08:47,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:08:47,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:47,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:08:47,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:08:47,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:47" (1/1) ... [2019-09-16 17:08:47,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc1d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:47, skipping insertion in model container [2019-09-16 17:08:47,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:47" (1/1) ... [2019-09-16 17:08:47,993 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:08:48,056 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:08:48,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:48,578 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:08:48,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:48,767 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:08:48,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48 WrapperNode [2019-09-16 17:08:48,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:48,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:08:48,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:08:48,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:08:48,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (1/1) ... [2019-09-16 17:08:48,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (1/1) ... [2019-09-16 17:08:48,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (1/1) ... [2019-09-16 17:08:48,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (1/1) ... [2019-09-16 17:08:48,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (1/1) ... [2019-09-16 17:08:48,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (1/1) ... [2019-09-16 17:08:48,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (1/1) ... [2019-09-16 17:08:48,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:08:48,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:08:48,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:08:48,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:08:48,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (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 [2019-09-16 17:08:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:08:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:08:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:08:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:08:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:08:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:08:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:08:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:08:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:08:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:08:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 17:08:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:08:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:08:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:08:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:08:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:08:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:08:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:08:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:08:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:08:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:08:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:08:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:08:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:08:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:08:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:08:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:08:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-16 17:08:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:08:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:08:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:08:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:08:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:08:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:08:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:08:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:08:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:08:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:08:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:08:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:08:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:08:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:08:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:08:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:08:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:08:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:08:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:08:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:08:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:08:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:08:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:08:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:08:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:08:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:08:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:08:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:08:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:08:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:08:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-16 17:08:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:08:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:08:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:08:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:08:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 17:08:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:08:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:08:48,938 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:08:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:08:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:08:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:08:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:08:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:08:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:08:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:08:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:08:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:08:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:08:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:08:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:08:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:08:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:08:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:08:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:08:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:08:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:08:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:08:50,070 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:08:50,070 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:08:50,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:50 BoogieIcfgContainer [2019-09-16 17:08:50,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:08:50,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:08:50,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:08:50,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:08:50,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:08:47" (1/3) ... [2019-09-16 17:08:50,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62de4a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:50, skipping insertion in model container [2019-09-16 17:08:50,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:48" (2/3) ... [2019-09-16 17:08:50,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62de4a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:50, skipping insertion in model container [2019-09-16 17:08:50,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:50" (3/3) ... [2019-09-16 17:08:50,081 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2019-09-16 17:08:50,091 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:08:50,100 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:08:50,118 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:08:50,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:08:50,146 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:08:50,146 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:08:50,146 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:08:50,146 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:08:50,147 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:08:50,147 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:08:50,147 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:08:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-09-16 17:08:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-16 17:08:50,183 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:50,184 INFO L407 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] [2019-09-16 17:08:50,187 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:50,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2019-09-16 17:08:50,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:50,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:50,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:50,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:50,257 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:50,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:50,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:50,610 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:50,615 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:50,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:50,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:50,629 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2019-09-16 17:08:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:50,661 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2019-09-16 17:08:50,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:50,663 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-16 17:08:50,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:50,677 INFO L225 Difference]: With dead ends: 160 [2019-09-16 17:08:50,677 INFO L226 Difference]: Without dead ends: 149 [2019-09-16 17:08:50,679 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-16 17:08:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-09-16 17:08:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-09-16 17:08:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2019-09-16 17:08:50,734 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2019-09-16 17:08:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:50,735 INFO L475 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2019-09-16 17:08:50,735 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2019-09-16 17:08:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-16 17:08:50,739 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:50,739 INFO L407 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] [2019-09-16 17:08:50,740 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:50,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2019-09-16 17:08:50,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:50,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:50,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:50,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:50,744 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:50,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:50,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:50,894 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:50,895 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:50,897 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 3 states. [2019-09-16 17:08:50,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:50,914 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2019-09-16 17:08:50,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:50,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-16 17:08:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:50,918 INFO L225 Difference]: With dead ends: 140 [2019-09-16 17:08:50,918 INFO L226 Difference]: Without dead ends: 140 [2019-09-16 17:08:50,919 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-16 17:08:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-16 17:08:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-16 17:08:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2019-09-16 17:08:50,933 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2019-09-16 17:08:50,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:50,934 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2019-09-16 17:08:50,934 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2019-09-16 17:08:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-16 17:08:50,937 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:50,937 INFO L407 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] [2019-09-16 17:08:50,937 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:50,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2019-09-16 17:08:50,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:50,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:50,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:50,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:50,941 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:51,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:51,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:51,077 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:51,078 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:51,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:51,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:51,079 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 7 states. [2019-09-16 17:08:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:51,488 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2019-09-16 17:08:51,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:51,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-16 17:08:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:51,491 INFO L225 Difference]: With dead ends: 140 [2019-09-16 17:08:51,491 INFO L226 Difference]: Without dead ends: 140 [2019-09-16 17:08:51,492 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:08:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-16 17:08:51,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-16 17:08:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-16 17:08:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-09-16 17:08:51,521 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2019-09-16 17:08:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:51,524 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-09-16 17:08:51,524 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-09-16 17:08:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-16 17:08:51,527 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:51,528 INFO L407 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] [2019-09-16 17:08:51,528 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2019-09-16 17:08:51,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:51,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:51,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:51,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:51,539 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:51,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:51,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:08:51,709 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:51,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:08:51,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:08:51,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:08:51,710 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 5 states. [2019-09-16 17:08:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:52,318 INFO L93 Difference]: Finished difference Result 254 states and 293 transitions. [2019-09-16 17:08:52,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:52,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2019-09-16 17:08:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:52,327 INFO L225 Difference]: With dead ends: 254 [2019-09-16 17:08:52,327 INFO L226 Difference]: Without dead ends: 254 [2019-09-16 17:08:52,327 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-09-16 17:08:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2019-09-16 17:08:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-09-16 17:08:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2019-09-16 17:08:52,360 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2019-09-16 17:08:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:52,361 INFO L475 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2019-09-16 17:08:52,361 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:08:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2019-09-16 17:08:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-16 17:08:52,363 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:52,363 INFO L407 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, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:52,364 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:52,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:52,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2019-09-16 17:08:52,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:52,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:52,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:52,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:52,367 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:52,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:52,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:52,469 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:52,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:52,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:52,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:52,471 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 6 states. [2019-09-16 17:08:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:52,686 INFO L93 Difference]: Finished difference Result 355 states and 410 transitions. [2019-09-16 17:08:52,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:52,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-16 17:08:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:52,694 INFO L225 Difference]: With dead ends: 355 [2019-09-16 17:08:52,694 INFO L226 Difference]: Without dead ends: 355 [2019-09-16 17:08:52,694 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2019-09-16 17:08:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2019-09-16 17:08:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-09-16 17:08:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 406 transitions. [2019-09-16 17:08:52,741 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 406 transitions. Word has length 89 [2019-09-16 17:08:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:52,742 INFO L475 AbstractCegarLoop]: Abstraction has 351 states and 406 transitions. [2019-09-16 17:08:52,743 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 406 transitions. [2019-09-16 17:08:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-16 17:08:52,746 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:52,746 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:52,746 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:52,747 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2019-09-16 17:08:52,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:52,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:52,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:52,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:52,751 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:52,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:52,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:52,911 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:52,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:52,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:52,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:52,912 INFO L87 Difference]: Start difference. First operand 351 states and 406 transitions. Second operand 6 states. [2019-09-16 17:08:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:53,205 INFO L93 Difference]: Finished difference Result 558 states and 663 transitions. [2019-09-16 17:08:53,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:53,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-16 17:08:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:53,211 INFO L225 Difference]: With dead ends: 558 [2019-09-16 17:08:53,212 INFO L226 Difference]: Without dead ends: 558 [2019-09-16 17:08:53,212 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2019-09-16 17:08:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 540. [2019-09-16 17:08:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-09-16 17:08:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 640 transitions. [2019-09-16 17:08:53,241 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 640 transitions. Word has length 93 [2019-09-16 17:08:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:53,242 INFO L475 AbstractCegarLoop]: Abstraction has 540 states and 640 transitions. [2019-09-16 17:08:53,242 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 640 transitions. [2019-09-16 17:08:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-16 17:08:53,245 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:53,245 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:53,246 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:53,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2019-09-16 17:08:53,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:53,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:53,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:53,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:53,249 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:53,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:53,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:08:53,323 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:53,323 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:08:53,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:08:53,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:08:53,324 INFO L87 Difference]: Start difference. First operand 540 states and 640 transitions. Second operand 5 states. [2019-09-16 17:08:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:53,345 INFO L93 Difference]: Finished difference Result 550 states and 650 transitions. [2019-09-16 17:08:53,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:08:53,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2019-09-16 17:08:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:53,350 INFO L225 Difference]: With dead ends: 550 [2019-09-16 17:08:53,350 INFO L226 Difference]: Without dead ends: 550 [2019-09-16 17:08:53,351 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:08:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2019-09-16 17:08:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 544. [2019-09-16 17:08:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-09-16 17:08:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 643 transitions. [2019-09-16 17:08:53,374 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 643 transitions. Word has length 93 [2019-09-16 17:08:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:53,374 INFO L475 AbstractCegarLoop]: Abstraction has 544 states and 643 transitions. [2019-09-16 17:08:53,374 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:08:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 643 transitions. [2019-09-16 17:08:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-16 17:08:53,377 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:53,377 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:53,377 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:53,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2019-09-16 17:08:53,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:53,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:53,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:53,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:53,381 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:53,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:53,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:08:53,473 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:53,473 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:08:53,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:08:53,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:53,474 INFO L87 Difference]: Start difference. First operand 544 states and 643 transitions. Second operand 9 states. [2019-09-16 17:08:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:53,536 INFO L93 Difference]: Finished difference Result 548 states and 648 transitions. [2019-09-16 17:08:53,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:08:53,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-09-16 17:08:53,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:53,540 INFO L225 Difference]: With dead ends: 548 [2019-09-16 17:08:53,541 INFO L226 Difference]: Without dead ends: 548 [2019-09-16 17:08:53,541 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:08:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-09-16 17:08:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 542. [2019-09-16 17:08:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-09-16 17:08:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 639 transitions. [2019-09-16 17:08:53,562 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 639 transitions. Word has length 93 [2019-09-16 17:08:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:53,563 INFO L475 AbstractCegarLoop]: Abstraction has 542 states and 639 transitions. [2019-09-16 17:08:53,563 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:08:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 639 transitions. [2019-09-16 17:08:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-16 17:08:53,565 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:53,565 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:53,566 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:53,566 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2019-09-16 17:08:53,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:53,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:53,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:53,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:53,569 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:53,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:53,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-16 17:08:53,680 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:53,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-16 17:08:53,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-16 17:08:53,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:08:53,681 INFO L87 Difference]: Start difference. First operand 542 states and 639 transitions. Second operand 10 states. [2019-09-16 17:08:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:54,032 INFO L93 Difference]: Finished difference Result 548 states and 633 transitions. [2019-09-16 17:08:54,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-16 17:08:54,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-09-16 17:08:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:54,036 INFO L225 Difference]: With dead ends: 548 [2019-09-16 17:08:54,036 INFO L226 Difference]: Without dead ends: 548 [2019-09-16 17:08:54,037 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:08:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-09-16 17:08:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 531. [2019-09-16 17:08:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-09-16 17:08:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 608 transitions. [2019-09-16 17:08:54,055 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 608 transitions. Word has length 94 [2019-09-16 17:08:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:54,055 INFO L475 AbstractCegarLoop]: Abstraction has 531 states and 608 transitions. [2019-09-16 17:08:54,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-16 17:08:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 608 transitions. [2019-09-16 17:08:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-16 17:08:54,059 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:54,059 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-16 17:08:54,059 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash -361137762, now seen corresponding path program 1 times [2019-09-16 17:08:54,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:54,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:54,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:54,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:54,063 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-16 17:08:54,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:54,136 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:54,137 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2019-09-16 17:08:54,139 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [113], [115], [116], [119], [121], [124], [131], [134], [136], [145], [149], [153], [159], [161], [167], [169], [172], [198], [199], [200], [202], [205], [209], [210], [211], [212], [215], [218], [222], [228], [255], [256], [259], [263], [264], [267], [269], [272], [282], [290], [293], [308], [311], [312], [313], [314], [337], [339], [340], [341], [342], [407], [408], [418], [420], [423], [425], [427], [430], [432], [437], [443], [444], [452], [453], [454], [455], [456], [457], [458], [459], [460], [494], [495], [496], [497], [500], [501], [506], [507], [510], [511], [512], [513], [514], [515], [516], [517], [522], [523], [524], [525], [536], [537], [540], [542], [543], [548], [549], [550], [551], [552], [553], [554], [556], [557], [558] [2019-09-16 17:08:54,181 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:54,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:54,255 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:54,256 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-16 17:08:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:54,261 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:54,329 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:54,329 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:54,333 INFO L420 sIntCurrentIteration]: We unified 136 AI predicates to 136 [2019-09-16 17:08:54,333 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:54,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:54,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-16 17:08:54,335 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:54,335 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:54,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:54,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:54,336 INFO L87 Difference]: Start difference. First operand 531 states and 608 transitions. Second operand 2 states. [2019-09-16 17:08:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:54,337 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:54,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:54,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 137 [2019-09-16 17:08:54,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:54,337 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:54,337 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:54,338 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:54,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2019-09-16 17:08:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:54,339 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:54,339 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:54,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:54,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:54 BoogieIcfgContainer [2019-09-16 17:08:54,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:54,346 INFO L168 Benchmark]: Toolchain (without parser) took 6369.56 ms. Allocated memory was 138.9 MB in the beginning and 329.3 MB in the end (delta: 190.3 MB). Free memory was 85.4 MB in the beginning and 219.2 MB in the end (delta: -133.9 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:54,347 INFO L168 Benchmark]: CDTParser took 1.26 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:54,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.96 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 85.2 MB in the beginning and 165.8 MB in the end (delta: -80.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:54,349 INFO L168 Benchmark]: Boogie Preprocessor took 94.39 ms. Allocated memory is still 199.2 MB. Free memory was 165.8 MB in the beginning and 161.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:54,350 INFO L168 Benchmark]: RCFGBuilder took 1208.96 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 161.3 MB in the beginning and 192.5 MB in the end (delta: -31.2 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:54,351 INFO L168 Benchmark]: TraceAbstraction took 4270.62 ms. Allocated memory was 221.8 MB in the beginning and 329.3 MB in the end (delta: 107.5 MB). Free memory was 192.5 MB in the beginning and 219.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:54,355 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.96 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 85.2 MB in the beginning and 165.8 MB in the end (delta: -80.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.39 ms. Allocated memory is still 199.2 MB. Free memory was 165.8 MB in the beginning and 161.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1208.96 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 161.3 MB in the beginning and 192.5 MB in the end (delta: -31.2 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4270.62 ms. Allocated memory was 221.8 MB in the beginning and 329.3 MB in the end (delta: 107.5 MB). Free memory was 192.5 MB in the beginning and 219.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 248 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1629 SDtfs, 725 SDslu, 5066 SDs, 0 SdLazy, 789 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=544occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.9191176470588235 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 69 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 836 NumberOfCodeBlocks, 836 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 826 ConstructedInterpolants, 0 QuantifiedInterpolants, 107909 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 28/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...