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_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:33,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:33,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:33,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:33,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:33,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:33,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:33,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:33,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:33,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:33,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:33,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:33,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:33,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:33,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:33,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:33,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:33,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:33,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:33,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:33,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:33,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:33,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:33,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:33,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:33,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:33,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:33,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:33,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:33,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:33,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:33,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:33,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:33,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:33,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:33,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:33,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:33,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:33,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:33,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:33,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:33,991 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 [2019-09-20 13:30:34,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:34,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:34,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:34,009 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:34,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:34,010 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:34,010 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:34,011 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:34,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:34,011 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:34,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:34,012 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:34,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:34,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:34,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:34,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:34,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:34,013 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:34,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:34,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:34,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:34,014 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:34,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:34,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:34,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:34,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:34,015 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:34,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:34,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:34,016 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:34,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:34,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:34,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:34,064 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:34,064 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:34,065 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c [2019-09-20 13:30:34,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6047c43ec/66eafe0d638c43368ccfa438151ea48f/FLAGfb24ba9af [2019-09-20 13:30:34,652 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:34,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c [2019-09-20 13:30:34,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6047c43ec/66eafe0d638c43368ccfa438151ea48f/FLAGfb24ba9af [2019-09-20 13:30:34,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6047c43ec/66eafe0d638c43368ccfa438151ea48f [2019-09-20 13:30:34,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:34,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:34,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:34,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:34,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:34,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:34" (1/1) ... [2019-09-20 13:30:34,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7052cab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:34, skipping insertion in model container [2019-09-20 13:30:34,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:34" (1/1) ... [2019-09-20 13:30:34,960 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:35,024 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:35,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:35,543 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:35,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:35,728 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:35,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35 WrapperNode [2019-09-20 13:30:35,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:35,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:35,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:35,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:35,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:35,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:35,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:35,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:35,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (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 [2019-09-20 13:30:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:37,235 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:37,236 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:37,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:37 BoogieIcfgContainer [2019-09-20 13:30:37,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:37,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:37,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:37,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:37,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:34" (1/3) ... [2019-09-20 13:30:37,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bee3891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:37, skipping insertion in model container [2019-09-20 13:30:37,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (2/3) ... [2019-09-20 13:30:37,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bee3891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:37, skipping insertion in model container [2019-09-20 13:30:37,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:37" (3/3) ... [2019-09-20 13:30:37,262 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2019-09-20 13:30:37,271 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:37,279 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:37,296 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:37,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:37,323 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:37,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:37,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:37,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:37,323 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:37,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:37,324 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-09-20 13:30:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:37,359 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,360 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] [2019-09-20 13:30:37,362 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1302944760, now seen corresponding path program 1 times [2019-09-20 13:30:37,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,421 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:37,669 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,675 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:37,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:37,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:37,693 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 2 states. [2019-09-20 13:30:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,725 INFO L93 Difference]: Finished difference Result 167 states and 198 transitions. [2019-09-20 13:30:37,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:37,726 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-20 13:30:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,740 INFO L225 Difference]: With dead ends: 167 [2019-09-20 13:30:37,740 INFO L226 Difference]: Without dead ends: 156 [2019-09-20 13:30:37,742 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 [2019-09-20 13:30:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-09-20 13:30:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-09-20 13:30:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-09-20 13:30:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2019-09-20 13:30:37,796 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 52 [2019-09-20 13:30:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,796 INFO L475 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2019-09-20 13:30:37,796 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2019-09-20 13:30:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:30:37,801 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,801 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] [2019-09-20 13:30:37,801 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,802 INFO L82 PathProgramCache]: Analyzing trace with hash -279757305, now seen corresponding path program 1 times [2019-09-20 13:30:37,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,809 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:37,990 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,992 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:37,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:37,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:37,994 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand 3 states. [2019-09-20 13:30:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:38,034 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2019-09-20 13:30:38,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:38,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-20 13:30:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:38,038 INFO L225 Difference]: With dead ends: 147 [2019-09-20 13:30:38,038 INFO L226 Difference]: Without dead ends: 147 [2019-09-20 13:30:38,039 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 [2019-09-20 13:30:38,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-20 13:30:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-20 13:30:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-20 13:30:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2019-09-20 13:30:38,060 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 53 [2019-09-20 13:30:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:38,061 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2019-09-20 13:30:38,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2019-09-20 13:30:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:30:38,070 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:38,070 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] [2019-09-20 13:30:38,071 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1451505581, now seen corresponding path program 1 times [2019-09-20 13:30:38,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:38,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:38,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,074 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:38,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:38,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:38,272 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:38,273 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:38,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:38,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:38,274 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 7 states. [2019-09-20 13:30:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:38,652 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2019-09-20 13:30:38,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:38,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-20 13:30:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:38,656 INFO L225 Difference]: With dead ends: 147 [2019-09-20 13:30:38,656 INFO L226 Difference]: Without dead ends: 147 [2019-09-20 13:30:38,657 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 [2019-09-20 13:30:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-20 13:30:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-20 13:30:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-20 13:30:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2019-09-20 13:30:38,670 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 57 [2019-09-20 13:30:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:38,670 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2019-09-20 13:30:38,670 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2019-09-20 13:30:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-20 13:30:38,673 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:38,673 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] [2019-09-20 13:30:38,674 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:38,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2075034732, now seen corresponding path program 1 times [2019-09-20 13:30:38,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:38,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:38,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,683 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:38,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:38,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:38,902 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:38,903 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:38,904 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 5 states. [2019-09-20 13:30:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:39,554 INFO L93 Difference]: Finished difference Result 268 states and 309 transitions. [2019-09-20 13:30:39,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:39,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2019-09-20 13:30:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:39,560 INFO L225 Difference]: With dead ends: 268 [2019-09-20 13:30:39,561 INFO L226 Difference]: Without dead ends: 268 [2019-09-20 13:30:39,561 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 [2019-09-20 13:30:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-09-20 13:30:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 250. [2019-09-20 13:30:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-09-20 13:30:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 285 transitions. [2019-09-20 13:30:39,613 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 285 transitions. Word has length 75 [2019-09-20 13:30:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:39,613 INFO L475 AbstractCegarLoop]: Abstraction has 250 states and 285 transitions. [2019-09-20 13:30:39,613 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 285 transitions. [2019-09-20 13:30:39,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:39,622 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:39,622 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] [2019-09-20 13:30:39,623 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash -466354007, now seen corresponding path program 1 times [2019-09-20 13:30:39,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:39,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:39,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,629 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:39,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:39,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:39,768 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:39,769 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:39,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:39,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:39,770 INFO L87 Difference]: Start difference. First operand 250 states and 285 transitions. Second operand 6 states. [2019-09-20 13:30:39,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:39,974 INFO L93 Difference]: Finished difference Result 383 states and 442 transitions. [2019-09-20 13:30:39,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:39,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-20 13:30:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:39,979 INFO L225 Difference]: With dead ends: 383 [2019-09-20 13:30:39,980 INFO L226 Difference]: Without dead ends: 383 [2019-09-20 13:30:39,980 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 [2019-09-20 13:30:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2019-09-20 13:30:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2019-09-20 13:30:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-09-20 13:30:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 438 transitions. [2019-09-20 13:30:40,030 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 438 transitions. Word has length 89 [2019-09-20 13:30:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,031 INFO L475 AbstractCegarLoop]: Abstraction has 379 states and 438 transitions. [2019-09-20 13:30:40,031 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 438 transitions. [2019-09-20 13:30:40,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:40,035 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,036 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] [2019-09-20 13:30:40,036 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1062079729, now seen corresponding path program 1 times [2019-09-20 13:30:40,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,041 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:40,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:40,208 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,209 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:40,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:40,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:40,209 INFO L87 Difference]: Start difference. First operand 379 states and 438 transitions. Second operand 6 states. [2019-09-20 13:30:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,528 INFO L93 Difference]: Finished difference Result 600 states and 711 transitions. [2019-09-20 13:30:40,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:40,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-20 13:30:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,536 INFO L225 Difference]: With dead ends: 600 [2019-09-20 13:30:40,537 INFO L226 Difference]: Without dead ends: 600 [2019-09-20 13:30:40,538 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 [2019-09-20 13:30:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-09-20 13:30:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 582. [2019-09-20 13:30:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-09-20 13:30:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 688 transitions. [2019-09-20 13:30:40,593 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 688 transitions. Word has length 93 [2019-09-20 13:30:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,594 INFO L475 AbstractCegarLoop]: Abstraction has 582 states and 688 transitions. [2019-09-20 13:30:40,594 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 688 transitions. [2019-09-20 13:30:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:40,596 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,596 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] [2019-09-20 13:30:40,597 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1297227280, now seen corresponding path program 1 times [2019-09-20 13:30:40,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,600 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:40,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:40,663 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,664 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:40,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:40,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:40,665 INFO L87 Difference]: Start difference. First operand 582 states and 688 transitions. Second operand 5 states. [2019-09-20 13:30:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,691 INFO L93 Difference]: Finished difference Result 592 states and 698 transitions. [2019-09-20 13:30:40,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:30:40,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2019-09-20 13:30:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,695 INFO L225 Difference]: With dead ends: 592 [2019-09-20 13:30:40,696 INFO L226 Difference]: Without dead ends: 592 [2019-09-20 13:30:40,696 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 [2019-09-20 13:30:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-09-20 13:30:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 586. [2019-09-20 13:30:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-09-20 13:30:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 691 transitions. [2019-09-20 13:30:40,719 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 691 transitions. Word has length 93 [2019-09-20 13:30:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,719 INFO L475 AbstractCegarLoop]: Abstraction has 586 states and 691 transitions. [2019-09-20 13:30:40,719 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 691 transitions. [2019-09-20 13:30:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:40,722 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,722 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] [2019-09-20 13:30:40,722 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1956758802, now seen corresponding path program 1 times [2019-09-20 13:30:40,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,725 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:40,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:30:40,818 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,818 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:30:40,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:30:40,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:40,819 INFO L87 Difference]: Start difference. First operand 586 states and 691 transitions. Second operand 9 states. [2019-09-20 13:30:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,865 INFO L93 Difference]: Finished difference Result 603 states and 714 transitions. [2019-09-20 13:30:40,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:40,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-09-20 13:30:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,869 INFO L225 Difference]: With dead ends: 603 [2019-09-20 13:30:40,869 INFO L226 Difference]: Without dead ends: 603 [2019-09-20 13:30:40,869 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 [2019-09-20 13:30:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-09-20 13:30:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2019-09-20 13:30:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-09-20 13:30:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 698 transitions. [2019-09-20 13:30:40,891 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 698 transitions. Word has length 93 [2019-09-20 13:30:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,891 INFO L475 AbstractCegarLoop]: Abstraction has 593 states and 698 transitions. [2019-09-20 13:30:40,892 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:30:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 698 transitions. [2019-09-20 13:30:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-20 13:30:40,894 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,894 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] [2019-09-20 13:30:40,894 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,895 INFO L82 PathProgramCache]: Analyzing trace with hash -2046113513, now seen corresponding path program 1 times [2019-09-20 13:30:40,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,897 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:41,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:41,006 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:41,006 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 106 with the following transitions: [2019-09-20 13:30:41,009 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [161], [167], [169], [172], [200], [202], [205], [210], [211], [213], [218], [220], [221], [222], [223], [229], [233], [266], [267], [275], [278], [280], [283], [293], [296], [300], [301], [304], [305], [320], [323], [324], [325], [348], [350], [351], [418], [419], [429], [431], [436], [438], [441], [443], [448], [455], [463], [464], [465], [466], [467], [468], [469], [470], [471], [511], [512], [513], [514], [517], [521], [522], [525], [526], [529], [530], [531], [537], [538], [539], [540], [551], [552], [555], [557], [558], [563], [564], [565], [566], [567], [568], [569], [571], [572], [573] [2019-09-20 13:30:41,060 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:41,061 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:41,183 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:41,186 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. [2019-09-20 13:30:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:41,190 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:41,267 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:41,267 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:41,275 INFO L420 sIntCurrentIteration]: We unified 104 AI predicates to 104 [2019-09-20 13:30:41,276 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:41,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:41,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-20 13:30:41,277 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:41,278 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:41,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:41,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:41,279 INFO L87 Difference]: Start difference. First operand 593 states and 698 transitions. Second operand 2 states. [2019-09-20 13:30:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:41,279 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:41,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:41,279 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 105 [2019-09-20 13:30:41,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:41,280 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:41,280 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:41,280 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:41,281 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2019-09-20 13:30:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:41,282 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:41,282 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:41,282 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:41,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:41,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:41 BoogieIcfgContainer [2019-09-20 13:30:41,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:41,291 INFO L168 Benchmark]: Toolchain (without parser) took 6353.46 ms. Allocated memory was 135.3 MB in the beginning and 283.6 MB in the end (delta: 148.4 MB). Free memory was 82.3 MB in the beginning and 100.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 130.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,293 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 101.3 MB in the beginning and 101.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.96 ms. Allocated memory was 135.3 MB in the beginning and 197.1 MB in the end (delta: 61.9 MB). Free memory was 82.1 MB in the beginning and 161.1 MB in the end (delta: -79.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,296 INFO L168 Benchmark]: Boogie Preprocessor took 140.83 ms. Allocated memory is still 197.1 MB. Free memory was 161.1 MB in the beginning and 154.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,297 INFO L168 Benchmark]: RCFGBuilder took 1366.28 ms. Allocated memory is still 197.1 MB. Free memory was 154.1 MB in the beginning and 65.8 MB in the end (delta: 88.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,298 INFO L168 Benchmark]: TraceAbstraction took 4049.63 ms. Allocated memory was 197.1 MB in the beginning and 283.6 MB in the end (delta: 86.5 MB). Free memory was 65.8 MB in the beginning and 100.4 MB in the end (delta: -34.7 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,309 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 101.3 MB in the beginning and 101.1 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 135.3 MB in the beginning and 197.1 MB in the end (delta: 61.9 MB). Free memory was 82.1 MB in the beginning and 161.1 MB in the end (delta: -79.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.83 ms. Allocated memory is still 197.1 MB. Free memory was 161.1 MB in the beginning and 154.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1366.28 ms. Allocated memory is still 197.1 MB. Free memory was 154.1 MB in the beginning and 65.8 MB in the end (delta: 88.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4049.63 ms. Allocated memory was 197.1 MB in the beginning and 283.6 MB in the end (delta: 86.5 MB). Free memory was 65.8 MB in the beginning and 100.4 MB in the end (delta: -34.7 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 467]: 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, 255 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1505 SDtfs, 651 SDslu, 3782 SDs, 0 SdLazy, 708 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=593occurred in iteration=8, 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, 1.0865384615384615 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 56 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 701 ConstructedInterpolants, 0 QuantifiedInterpolants, 93907 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...