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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:29,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:29,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:29,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:29,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:29,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:29,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:29,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:29,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:29,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:29,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:29,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:29,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:29,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:29,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:29,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:29,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:29,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:29,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:29,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:29,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:29,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:29,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:29,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:29,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:29,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:29,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:29,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:29,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:29,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:29,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:29,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:29,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:29,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:29,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:29,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:29,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:29,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:29,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:29,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:29,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:29,131 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 13:31:29,158 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:29,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:29,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:29,159 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:29,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:29,160 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:29,160 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:29,160 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:29,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:29,161 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:29,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:29,162 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:29,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:29,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:29,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:29,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:29,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:29,164 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:29,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:29,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:29,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:29,165 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:29,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:29,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:29,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:29,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:29,166 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:29,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:29,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:29,166 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:29,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:29,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:29,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:29,234 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:29,234 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:29,235 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2019-09-20 13:31:29,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b47be747/7dc05feef9ee4194a662b2a78e4e232a/FLAG4e4151ce6 [2019-09-20 13:31:29,834 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:29,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2019-09-20 13:31:29,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b47be747/7dc05feef9ee4194a662b2a78e4e232a/FLAG4e4151ce6 [2019-09-20 13:31:30,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b47be747/7dc05feef9ee4194a662b2a78e4e232a [2019-09-20 13:31:30,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:30,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:30,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:30,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:30,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:30,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cecfa04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30, skipping insertion in model container [2019-09-20 13:31:30,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,155 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:30,215 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:30,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:30,633 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:30,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:30,762 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:30,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30 WrapperNode [2019-09-20 13:31:30,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:30,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:30,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:30,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:30,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:30,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:30,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:30,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:30,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (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 13:31:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:32,102 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:32,103 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:32,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:32 BoogieIcfgContainer [2019-09-20 13:31:32,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:32,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:32,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:32,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:32,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:30" (1/3) ... [2019-09-20 13:31:32,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c4bfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:32, skipping insertion in model container [2019-09-20 13:31:32,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30" (2/3) ... [2019-09-20 13:31:32,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c4bfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:32, skipping insertion in model container [2019-09-20 13:31:32,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:32" (3/3) ... [2019-09-20 13:31:32,114 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2019-09-20 13:31:32,124 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:32,134 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:32,149 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:32,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:32,170 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:32,170 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:32,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:32,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:32,171 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:32,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:32,171 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-09-20 13:31:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:32,206 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:32,207 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] [2019-09-20 13:31:32,209 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2019-09-20 13:31:32,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:32,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:32,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,275 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:32,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:32,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:32,574 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:32,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:32,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:32,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:32,601 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-09-20 13:31:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:32,639 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2019-09-20 13:31:32,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:32,640 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:32,652 INFO L225 Difference]: With dead ends: 157 [2019-09-20 13:31:32,652 INFO L226 Difference]: Without dead ends: 146 [2019-09-20 13:31:32,654 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 13:31:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-20 13:31:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-20 13:31:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-20 13:31:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2019-09-20 13:31:32,710 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2019-09-20 13:31:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:32,711 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2019-09-20 13:31:32,711 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2019-09-20 13:31:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:32,715 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:32,715 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] [2019-09-20 13:31:32,715 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:32,716 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2019-09-20 13:31:32,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:32,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:32,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,719 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:32,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:32,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:32,844 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:32,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:32,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:32,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:32,848 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 3 states. [2019-09-20 13:31:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:32,878 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2019-09-20 13:31:32,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:32,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:32,885 INFO L225 Difference]: With dead ends: 137 [2019-09-20 13:31:32,885 INFO L226 Difference]: Without dead ends: 137 [2019-09-20 13:31:32,886 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 13:31:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-09-20 13:31:32,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-09-20 13:31:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-20 13:31:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-09-20 13:31:32,914 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2019-09-20 13:31:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:32,917 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-09-20 13:31:32,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-09-20 13:31:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:32,923 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:32,923 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] [2019-09-20 13:31:32,923 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2019-09-20 13:31:32,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:32,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:32,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,927 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:33,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:33,079 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,079 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:33,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:33,080 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 7 states. [2019-09-20 13:31:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:33,556 INFO L93 Difference]: Finished difference Result 302 states and 362 transitions. [2019-09-20 13:31:33,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:33,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:33,561 INFO L225 Difference]: With dead ends: 302 [2019-09-20 13:31:33,561 INFO L226 Difference]: Without dead ends: 302 [2019-09-20 13:31:33,561 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 [2019-09-20 13:31:33,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-09-20 13:31:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 290. [2019-09-20 13:31:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-09-20 13:31:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2019-09-20 13:31:33,616 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2019-09-20 13:31:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:33,618 INFO L475 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2019-09-20 13:31:33,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2019-09-20 13:31:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:33,626 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:33,626 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] [2019-09-20 13:31:33,626 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2019-09-20 13:31:33,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:33,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:33,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,631 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:33,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:33,747 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,748 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:33,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:33,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:33,748 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 7 states. [2019-09-20 13:31:34,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:34,476 INFO L93 Difference]: Finished difference Result 474 states and 594 transitions. [2019-09-20 13:31:34,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:34,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:34,483 INFO L225 Difference]: With dead ends: 474 [2019-09-20 13:31:34,484 INFO L226 Difference]: Without dead ends: 474 [2019-09-20 13:31:34,485 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:34,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-09-20 13:31:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 420. [2019-09-20 13:31:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-09-20 13:31:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 505 transitions. [2019-09-20 13:31:34,546 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 505 transitions. Word has length 70 [2019-09-20 13:31:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:34,549 INFO L475 AbstractCegarLoop]: Abstraction has 420 states and 505 transitions. [2019-09-20 13:31:34,549 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 505 transitions. [2019-09-20 13:31:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:31:34,558 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:34,558 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] [2019-09-20 13:31:34,559 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:34,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:34,559 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2019-09-20 13:31:34,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:34,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:34,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,562 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:34,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:34,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:34,759 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:34,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:34,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:34,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:34,762 INFO L87 Difference]: Start difference. First operand 420 states and 505 transitions. Second operand 4 states. [2019-09-20 13:31:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,048 INFO L93 Difference]: Finished difference Result 1122 states and 1419 transitions. [2019-09-20 13:31:35,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:35,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-09-20 13:31:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,056 INFO L225 Difference]: With dead ends: 1122 [2019-09-20 13:31:35,056 INFO L226 Difference]: Without dead ends: 1122 [2019-09-20 13:31:35,056 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2019-09-20 13:31:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1096. [2019-09-20 13:31:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2019-09-20 13:31:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1371 transitions. [2019-09-20 13:31:35,107 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1371 transitions. Word has length 93 [2019-09-20 13:31:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,107 INFO L475 AbstractCegarLoop]: Abstraction has 1096 states and 1371 transitions. [2019-09-20 13:31:35,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1371 transitions. [2019-09-20 13:31:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:31:35,110 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,110 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] [2019-09-20 13:31:35,110 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2019-09-20 13:31:35,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,114 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:35,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:35,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:35,180 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:35,181 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:35,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:35,182 INFO L87 Difference]: Start difference. First operand 1096 states and 1371 transitions. Second operand 6 states. [2019-09-20 13:31:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,216 INFO L93 Difference]: Finished difference Result 1126 states and 1403 transitions. [2019-09-20 13:31:35,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:35,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-20 13:31:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,223 INFO L225 Difference]: With dead ends: 1126 [2019-09-20 13:31:35,223 INFO L226 Difference]: Without dead ends: 1126 [2019-09-20 13:31:35,223 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 [2019-09-20 13:31:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-09-20 13:31:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2019-09-20 13:31:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2019-09-20 13:31:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1403 transitions. [2019-09-20 13:31:35,268 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1403 transitions. Word has length 93 [2019-09-20 13:31:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,268 INFO L475 AbstractCegarLoop]: Abstraction has 1126 states and 1403 transitions. [2019-09-20 13:31:35,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1403 transitions. [2019-09-20 13:31:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:31:35,271 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,271 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] [2019-09-20 13:31:35,271 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2019-09-20 13:31:35,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,275 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:35,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:35,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:35,352 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:35,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:35,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:35,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:35,353 INFO L87 Difference]: Start difference. First operand 1126 states and 1403 transitions. Second operand 8 states. [2019-09-20 13:31:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,385 INFO L93 Difference]: Finished difference Result 983 states and 1202 transitions. [2019-09-20 13:31:35,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:35,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-09-20 13:31:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,391 INFO L225 Difference]: With dead ends: 983 [2019-09-20 13:31:35,391 INFO L226 Difference]: Without dead ends: 983 [2019-09-20 13:31:35,391 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 [2019-09-20 13:31:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2019-09-20 13:31:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 983. [2019-09-20 13:31:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2019-09-20 13:31:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1202 transitions. [2019-09-20 13:31:35,431 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1202 transitions. Word has length 93 [2019-09-20 13:31:35,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,431 INFO L475 AbstractCegarLoop]: Abstraction has 983 states and 1202 transitions. [2019-09-20 13:31:35,431 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1202 transitions. [2019-09-20 13:31:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:31:35,434 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,434 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] [2019-09-20 13:31:35,434 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2019-09-20 13:31:35,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:35,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:35,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:35,617 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:35,617 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:35,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:35,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:35,618 INFO L87 Difference]: Start difference. First operand 983 states and 1202 transitions. Second operand 9 states. [2019-09-20 13:31:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,889 INFO L93 Difference]: Finished difference Result 1917 states and 2349 transitions. [2019-09-20 13:31:36,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:36,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-09-20 13:31:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,900 INFO L225 Difference]: With dead ends: 1917 [2019-09-20 13:31:36,900 INFO L226 Difference]: Without dead ends: 1917 [2019-09-20 13:31:36,901 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 [2019-09-20 13:31:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2019-09-20 13:31:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1684. [2019-09-20 13:31:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2019-09-20 13:31:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2029 transitions. [2019-09-20 13:31:36,982 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2029 transitions. Word has length 97 [2019-09-20 13:31:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,982 INFO L475 AbstractCegarLoop]: Abstraction has 1684 states and 2029 transitions. [2019-09-20 13:31:36,983 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2029 transitions. [2019-09-20 13:31:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-20 13:31:36,987 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:36,988 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,988 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2019-09-20 13:31:36,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,991 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:31:37,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:37,141 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:37,143 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2019-09-20 13:31:37,145 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [125], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [173], [179], [196], [197], [198], [200], [205], [207], [208], [209], [210], [211], [212], [216], [219], [223], [229], [258], [262], [265], [268], [270], [273], [280], [283], [286], [290], [291], [294], [295], [296], [298], [299], [300], [302], [305], [307], [310], [313], [322], [324], [325], [326], [350], [352], [353], [420], [421], [431], [439], [440], [441], [442], [443], [444], [445], [446], [447], [481], [482], [485], [486], [487], [488], [489], [490], [497], [498], [501], [502], [503], [504], [505], [506], [507], [508], [509], [510], [515], [516], [517], [518], [521], [522], [523], [524], [525], [526], [527], [528], [529], [533], [534], [535], [537], [538], [543], [544], [545] [2019-09-20 13:31:37,188 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:37,189 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:37,264 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:37,266 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:31:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:37,270 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:37,351 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:37,352 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:37,357 INFO L420 sIntCurrentIteration]: We unified 156 AI predicates to 156 [2019-09-20 13:31:37,357 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:37,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:37,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:37,359 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:37,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:37,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:37,360 INFO L87 Difference]: Start difference. First operand 1684 states and 2029 transitions. Second operand 2 states. [2019-09-20 13:31:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:37,360 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:37,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:37,361 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-09-20 13:31:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:37,361 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:37,361 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:37,361 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 156 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 13:31:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:37,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2019-09-20 13:31:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:37,363 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:37,363 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:37,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:37,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:37 BoogieIcfgContainer [2019-09-20 13:31:37,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:37,371 INFO L168 Benchmark]: Toolchain (without parser) took 7231.01 ms. Allocated memory was 136.8 MB in the beginning and 354.9 MB in the end (delta: 218.1 MB). Free memory was 83.9 MB in the beginning and 311.8 MB in the end (delta: -228.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:31:37,372 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 102.8 MB in the beginning and 102.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:37,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.05 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 83.7 MB in the beginning and 160.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:37,374 INFO L168 Benchmark]: Boogie Preprocessor took 125.99 ms. Allocated memory is still 197.7 MB. Free memory was 160.2 MB in the beginning and 155.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:37,375 INFO L168 Benchmark]: RCFGBuilder took 1214.70 ms. Allocated memory was 197.7 MB in the beginning and 216.0 MB in the end (delta: 18.4 MB). Free memory was 155.7 MB in the beginning and 185.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:37,376 INFO L168 Benchmark]: TraceAbstraction took 5261.93 ms. Allocated memory was 216.0 MB in the beginning and 354.9 MB in the end (delta: 138.9 MB). Free memory was 185.3 MB in the beginning and 311.8 MB in the end (delta: -126.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:37,380 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 102.8 MB in the beginning and 102.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.05 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 83.7 MB in the beginning and 160.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.99 ms. Allocated memory is still 197.7 MB. Free memory was 160.2 MB in the beginning and 155.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.70 ms. Allocated memory was 197.7 MB in the beginning and 216.0 MB in the end (delta: 18.4 MB). Free memory was 155.7 MB in the beginning and 185.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5261.93 ms. Allocated memory was 216.0 MB in the beginning and 354.9 MB in the end (delta: 138.9 MB). Free memory was 185.3 MB in the beginning and 311.8 MB in the end (delta: -126.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 850]: 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, 245 locations, 1 error locations. SAFE Result, 5.2s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1539 SDtfs, 1171 SDslu, 3422 SDs, 0 SdLazy, 1670 SolverSat, 348 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1684occurred 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, 0.8333333333333334 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 325 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 787 NumberOfCodeBlocks, 787 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 778 ConstructedInterpolants, 0 QuantifiedInterpolants, 123398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 60/67 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...