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_spec5_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:43,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:43,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:43,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:43,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:43,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:43,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:43,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:43,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:43,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:43,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:43,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:43,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:43,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:43,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:43,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:43,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:43,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:43,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:43,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:43,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:43,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:43,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:43,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:44,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:44,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:44,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:44,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:44,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:44,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:44,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:44,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:44,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:44,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:44,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:44,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:44,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:44,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:44,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:44,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:44,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:44,022 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 17:09:44,048 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:44,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:44,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:44,050 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:44,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:44,051 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:44,051 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:44,051 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:44,051 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:44,051 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:44,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:44,054 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:44,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:44,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:44,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:44,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:44,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:44,056 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:44,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:44,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:44,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:44,057 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:44,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:44,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:44,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:44,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:44,058 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:44,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:44,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:44,058 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:44,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:44,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:44,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:44,135 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:44,136 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:44,136 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2019-09-16 17:09:44,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfc1556b/656f00bd511c4e73be1aa64f10267f78/FLAGd0df3163e [2019-09-16 17:09:44,732 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:44,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2019-09-16 17:09:44,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfc1556b/656f00bd511c4e73be1aa64f10267f78/FLAGd0df3163e [2019-09-16 17:09:44,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfc1556b/656f00bd511c4e73be1aa64f10267f78 [2019-09-16 17:09:44,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:44,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:44,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:44,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:44,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:44,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:44" (1/1) ... [2019-09-16 17:09:44,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6f752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:44, skipping insertion in model container [2019-09-16 17:09:44,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:44" (1/1) ... [2019-09-16 17:09:45,004 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:45,066 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:45,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:45,647 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:45,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:45,775 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:45,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45 WrapperNode [2019-09-16 17:09:45,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:45,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:45,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:45,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:45,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (1/1) ... [2019-09-16 17:09:45,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (1/1) ... [2019-09-16 17:09:45,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (1/1) ... [2019-09-16 17:09:45,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (1/1) ... [2019-09-16 17:09:45,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (1/1) ... [2019-09-16 17:09:45,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (1/1) ... [2019-09-16 17:09:45,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (1/1) ... [2019-09-16 17:09:45,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:45,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:45,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:45,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:45,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (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 17:09:45,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:45,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:45,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:45,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:45,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:45,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:45,998 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:45,998 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:45,998 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:46,000 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:09:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:09:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:09:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:09:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:09:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:09:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:47,144 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:47,145 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:47,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:47 BoogieIcfgContainer [2019-09-16 17:09:47,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:47,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:47,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:47,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:47,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:44" (1/3) ... [2019-09-16 17:09:47,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72682536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:47, skipping insertion in model container [2019-09-16 17:09:47,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:45" (2/3) ... [2019-09-16 17:09:47,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72682536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:47, skipping insertion in model container [2019-09-16 17:09:47,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:47" (3/3) ... [2019-09-16 17:09:47,160 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2019-09-16 17:09:47,171 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:47,184 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:47,202 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:47,235 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:47,236 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:47,236 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:47,236 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:47,237 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:47,238 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:47,238 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:47,238 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2019-09-16 17:09:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:47,290 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:47,292 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:47,297 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:47,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1347369271, now seen corresponding path program 1 times [2019-09-16 17:09:47,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:47,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:47,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:47,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:47,372 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:47,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:47,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:47,715 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:47,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:47,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:47,744 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 2 states. [2019-09-16 17:09:47,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:47,781 INFO L93 Difference]: Finished difference Result 158 states and 184 transitions. [2019-09-16 17:09:47,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:47,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:47,797 INFO L225 Difference]: With dead ends: 158 [2019-09-16 17:09:47,797 INFO L226 Difference]: Without dead ends: 147 [2019-09-16 17:09:47,799 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 17:09:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-16 17:09:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-16 17:09:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-16 17:09:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2019-09-16 17:09:47,857 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 59 [2019-09-16 17:09:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:47,858 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2019-09-16 17:09:47,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2019-09-16 17:09:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:47,862 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:47,862 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:47,863 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:47,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1814034675, now seen corresponding path program 1 times [2019-09-16 17:09:47,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:47,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:47,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:47,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:47,866 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:48,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:48,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:48,034 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:48,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:48,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:48,038 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 3 states. [2019-09-16 17:09:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:48,062 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2019-09-16 17:09:48,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:48,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:48,066 INFO L225 Difference]: With dead ends: 138 [2019-09-16 17:09:48,066 INFO L226 Difference]: Without dead ends: 138 [2019-09-16 17:09:48,067 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 17:09:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-09-16 17:09:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-09-16 17:09:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-09-16 17:09:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2019-09-16 17:09:48,082 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 60 [2019-09-16 17:09:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:48,083 INFO L475 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2019-09-16 17:09:48,083 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2019-09-16 17:09:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-16 17:09:48,086 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:48,086 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:48,086 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1518926539, now seen corresponding path program 1 times [2019-09-16 17:09:48,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:48,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:48,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:48,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:48,092 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:48,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:48,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:48,322 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:48,323 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:48,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:48,324 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 7 states. [2019-09-16 17:09:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:48,737 INFO L93 Difference]: Finished difference Result 138 states and 159 transitions. [2019-09-16 17:09:48,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:48,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-16 17:09:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:48,740 INFO L225 Difference]: With dead ends: 138 [2019-09-16 17:09:48,741 INFO L226 Difference]: Without dead ends: 138 [2019-09-16 17:09:48,741 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 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 17:09:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-09-16 17:09:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-09-16 17:09:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-09-16 17:09:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2019-09-16 17:09:48,759 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 65 [2019-09-16 17:09:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:48,762 INFO L475 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2019-09-16 17:09:48,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2019-09-16 17:09:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-16 17:09:48,774 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:48,775 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:48,775 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:48,776 INFO L82 PathProgramCache]: Analyzing trace with hash 793046871, now seen corresponding path program 1 times [2019-09-16 17:09:48,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:48,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:48,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:48,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:48,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:48,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:48,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:09:48,941 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:48,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:09:48,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:09:48,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:09:48,942 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 5 states. [2019-09-16 17:09:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:49,536 INFO L93 Difference]: Finished difference Result 254 states and 293 transitions. [2019-09-16 17:09:49,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:49,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-16 17:09:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:49,545 INFO L225 Difference]: With dead ends: 254 [2019-09-16 17:09:49,545 INFO L226 Difference]: Without dead ends: 254 [2019-09-16 17:09:49,545 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 17:09:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-09-16 17:09:49,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2019-09-16 17:09:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-09-16 17:09:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2019-09-16 17:09:49,570 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 78 [2019-09-16 17:09:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:49,570 INFO L475 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2019-09-16 17:09:49,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:09:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2019-09-16 17:09:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-16 17:09:49,574 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:49,575 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:49,575 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:49,576 INFO L82 PathProgramCache]: Analyzing trace with hash -856462191, now seen corresponding path program 1 times [2019-09-16 17:09:49,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:49,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:49,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:49,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:49,581 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:09:49,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:49,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:49,731 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:49,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:49,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:49,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:49,734 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 7 states. [2019-09-16 17:09:50,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:50,444 INFO L93 Difference]: Finished difference Result 253 states and 293 transitions. [2019-09-16 17:09:50,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:09:50,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-09-16 17:09:50,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:50,447 INFO L225 Difference]: With dead ends: 253 [2019-09-16 17:09:50,447 INFO L226 Difference]: Without dead ends: 253 [2019-09-16 17:09:50,448 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:09:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-09-16 17:09:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 234. [2019-09-16 17:09:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2019-09-16 17:09:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2019-09-16 17:09:50,466 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 92 [2019-09-16 17:09:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:50,467 INFO L475 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2019-09-16 17:09:50,467 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2019-09-16 17:09:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:09:50,469 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:50,469 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:50,469 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:50,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:50,470 INFO L82 PathProgramCache]: Analyzing trace with hash -357754488, now seen corresponding path program 1 times [2019-09-16 17:09:50,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:50,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:50,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,473 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:50,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:50,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:50,592 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:50,594 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:50,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:50,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:50,595 INFO L87 Difference]: Start difference. First operand 234 states and 264 transitions. Second operand 6 states. [2019-09-16 17:09:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:50,633 INFO L93 Difference]: Finished difference Result 241 states and 271 transitions. [2019-09-16 17:09:50,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:50,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-16 17:09:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:50,639 INFO L225 Difference]: With dead ends: 241 [2019-09-16 17:09:50,640 INFO L226 Difference]: Without dead ends: 241 [2019-09-16 17:09:50,640 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-09-16 17:09:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2019-09-16 17:09:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2019-09-16 17:09:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2019-09-16 17:09:50,672 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 108 [2019-09-16 17:09:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:50,673 INFO L475 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2019-09-16 17:09:50,673 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2019-09-16 17:09:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:09:50,677 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:50,678 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:50,678 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:50,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:50,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1570518214, now seen corresponding path program 1 times [2019-09-16 17:09:50,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:50,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:50,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,685 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:50,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:50,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:50,809 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:50,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:50,812 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand 8 states. [2019-09-16 17:09:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:50,859 INFO L93 Difference]: Finished difference Result 246 states and 276 transitions. [2019-09-16 17:09:50,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:50,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-16 17:09:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:50,863 INFO L225 Difference]: With dead ends: 246 [2019-09-16 17:09:50,863 INFO L226 Difference]: Without dead ends: 246 [2019-09-16 17:09:50,864 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2019-09-16 17:09:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2019-09-16 17:09:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2019-09-16 17:09:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2019-09-16 17:09:50,875 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 108 [2019-09-16 17:09:50,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:50,875 INFO L475 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2019-09-16 17:09:50,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2019-09-16 17:09:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-16 17:09:50,877 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:50,877 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:50,878 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1329978085, now seen corresponding path program 1 times [2019-09-16 17:09:50,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:50,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:50,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:50,881 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:50,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:50,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:50,982 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:50,983 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:50,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:50,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:50,984 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand 4 states. [2019-09-16 17:09:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:51,195 INFO L93 Difference]: Finished difference Result 480 states and 561 transitions. [2019-09-16 17:09:51,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:51,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-16 17:09:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:51,199 INFO L225 Difference]: With dead ends: 480 [2019-09-16 17:09:51,199 INFO L226 Difference]: Without dead ends: 480 [2019-09-16 17:09:51,200 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2019-09-16 17:09:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 471. [2019-09-16 17:09:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2019-09-16 17:09:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 544 transitions. [2019-09-16 17:09:51,224 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 544 transitions. Word has length 108 [2019-09-16 17:09:51,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:51,224 INFO L475 AbstractCegarLoop]: Abstraction has 471 states and 544 transitions. [2019-09-16 17:09:51,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 544 transitions. [2019-09-16 17:09:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-16 17:09:51,226 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:51,227 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:51,227 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash 825673247, now seen corresponding path program 1 times [2019-09-16 17:09:51,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:51,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:51,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:51,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:51,230 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:51,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:51,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:51,422 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:51,423 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:51,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:51,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:51,424 INFO L87 Difference]: Start difference. First operand 471 states and 544 transitions. Second operand 9 states. [2019-09-16 17:09:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:52,737 INFO L93 Difference]: Finished difference Result 873 states and 1010 transitions. [2019-09-16 17:09:52,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:09:52,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-16 17:09:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:52,744 INFO L225 Difference]: With dead ends: 873 [2019-09-16 17:09:52,744 INFO L226 Difference]: Without dead ends: 873 [2019-09-16 17:09:52,744 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:09:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2019-09-16 17:09:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 792. [2019-09-16 17:09:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-09-16 17:09:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 904 transitions. [2019-09-16 17:09:52,779 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 904 transitions. Word has length 112 [2019-09-16 17:09:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:52,779 INFO L475 AbstractCegarLoop]: Abstraction has 792 states and 904 transitions. [2019-09-16 17:09:52,779 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:09:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 904 transitions. [2019-09-16 17:09:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-16 17:09:52,782 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:52,783 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, 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] [2019-09-16 17:09:52,783 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:52,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1258980138, now seen corresponding path program 1 times [2019-09-16 17:09:52,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:52,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:52,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:52,786 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-16 17:09:52,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:09:52,930 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:09:52,931 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2019-09-16 17:09:52,933 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [99], [103], [104], [105], [108], [110], [116], [120], [123], [124], [125], [134], [138], [142], [145], [148], [150], [156], [158], [164], [167], [186], [188], [193], [196], [197], [198], [199], [201], [206], [208], [209], [213], [216], [220], [226], [253], [254], [257], [261], [266], [270], [271], [274], [275], [276], [278], [279], [280], [282], [285], [287], [290], [293], [302], [304], [305], [308], [310], [313], [320], [323], [324], [325], [349], [351], [352], [370], [371], [421], [422], [432], [440], [441], [442], [443], [444], [445], [446], [447], [448], [480], [481], [484], [485], [486], [487], [488], [489], [494], [495], [498], [499], [500], [501], [502], [503], [504], [505], [506], [507], [508], [509], [510], [511], [516], [517], [518], [519], [520], [521], [522], [524], [525], [526], [527], [530], [531], [534], [535], [536], [538], [539], [544], [545], [546] [2019-09-16 17:09:52,975 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:09:52,975 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:09:53,052 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:09:53,054 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 71 root evaluator evaluations with a maximum evaluation depth of 0. Performed 71 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:09:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:53,058 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:09:53,114 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:09:53,114 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:09:53,119 INFO L420 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2019-09-16 17:09:53,119 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:09:53,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:09:53,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:09:53,120 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:53,121 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:53,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:53,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:53,122 INFO L87 Difference]: Start difference. First operand 792 states and 904 transitions. Second operand 2 states. [2019-09-16 17:09:53,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:53,122 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:09:53,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:53,122 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 172 [2019-09-16 17:09:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:53,123 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:09:53,123 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:09:53,123 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 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 17:09:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:09:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:09:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:09:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:09:53,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2019-09-16 17:09:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:53,124 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:09:53,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:09:53,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:09:53,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:09:53 BoogieIcfgContainer [2019-09-16 17:09:53,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:09:53,132 INFO L168 Benchmark]: Toolchain (without parser) took 8143.84 ms. Allocated memory was 138.9 MB in the beginning and 323.5 MB in the end (delta: 184.5 MB). Free memory was 84.7 MB in the beginning and 173.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:53,133 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:09:53,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.61 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 84.5 MB in the beginning and 163.7 MB in the end (delta: -79.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:53,135 INFO L168 Benchmark]: Boogie Preprocessor took 123.87 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 159.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:53,136 INFO L168 Benchmark]: RCFGBuilder took 1245.85 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 159.2 MB in the beginning and 188.6 MB in the end (delta: -29.4 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:53,137 INFO L168 Benchmark]: TraceAbstraction took 5981.80 ms. Allocated memory was 222.3 MB in the beginning and 323.5 MB in the end (delta: 101.2 MB). Free memory was 188.6 MB in the beginning and 173.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 116.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:53,144 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.61 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 84.5 MB in the beginning and 163.7 MB in the end (delta: -79.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.87 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 159.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.85 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 159.2 MB in the beginning and 188.6 MB in the end (delta: -29.4 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5981.80 ms. Allocated memory was 222.3 MB in the beginning and 323.5 MB in the end (delta: 101.2 MB). Free memory was 188.6 MB in the beginning and 173.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 116.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 700]: 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 42 procedures, 246 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1620 SDtfs, 1264 SDslu, 3183 SDs, 0 SdLazy, 1860 SolverSat, 501 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=792occurred in iteration=9, 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, 0.8128654970760234 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 133 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 962 NumberOfCodeBlocks, 962 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 952 ConstructedInterpolants, 0 QuantifiedInterpolants, 165199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 71/78 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...