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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:51:11,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:51:11,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:51:11,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:51:11,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:51:11,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:51:11,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:51:11,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:51:11,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:51:11,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:51:11,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:51:11,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:51:11,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:51:11,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:51:11,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:51:11,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:51:11,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:51:11,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:51:11,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:51:11,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:51:11,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:51:11,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:51:11,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:51:11,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:51:11,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:51:11,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:51:11,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:51:11,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:51:11,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:51:11,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:51:11,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:51:11,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:51:11,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:51:11,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:51:11,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:51:11,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:51:11,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:51:11,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:51:11,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:51:11,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:51:11,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:51:11,068 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 [2019-09-10 02:51:11,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:51:11,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:51:11,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:51:11,086 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:51:11,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:51:11,087 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:51:11,087 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:51:11,087 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:51:11,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:51:11,087 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:51:11,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:51:11,088 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:51:11,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:51:11,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:51:11,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:51:11,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:51:11,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:51:11,089 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:51:11,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:51:11,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:51:11,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:51:11,090 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:51:11,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:51:11,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:51:11,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:51:11,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:51:11,091 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:51:11,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:51:11,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:51:11,092 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:51:11,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:51:11,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:51:11,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:51:11,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:51:11,141 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:51:11,142 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-09-10 02:51:11,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d13275414/b708feff9d504151b8ce8e4c72e9c93a/FLAG079b3f32a [2019-09-10 02:51:11,752 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:51:11,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-09-10 02:51:11,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d13275414/b708feff9d504151b8ce8e4c72e9c93a/FLAG079b3f32a [2019-09-10 02:51:12,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d13275414/b708feff9d504151b8ce8e4c72e9c93a [2019-09-10 02:51:12,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:51:12,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:51:12,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:12,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:51:12,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:51:12,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f90b705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12, skipping insertion in model container [2019-09-10 02:51:12,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,085 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:51:12,135 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:51:12,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:12,574 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:51:12,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:12,730 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:51:12,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12 WrapperNode [2019-09-10 02:51:12,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:12,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:51:12,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:51:12,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:51:12,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:51:12,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:51:12,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:51:12,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:51:12,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (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 [2019-09-10 02:51:12,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:51:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:51:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:51:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:51:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:51:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:51:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:51:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:51:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:51:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:51:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:51:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:51:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:51:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:51:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:51:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:51:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:51:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:51:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:51:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:51:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:51:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:51:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:51:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:51:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:51:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:51:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-10 02:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-10 02:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:51:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:51:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:51:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:51:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-10 02:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-10 02:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:51:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:51:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:51:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:51:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:51:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:51:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:51:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:51:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:51:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:51:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:51:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-10 02:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:51:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:51:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:51:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-10 02:51:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:51:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:51:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:51:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:51:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:51:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-10 02:51:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-10 02:51:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:51:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:51:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:51:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:51:14,036 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:51:14,036 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:51:14,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:14 BoogieIcfgContainer [2019-09-10 02:51:14,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:51:14,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:51:14,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:51:14,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:51:14,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:51:12" (1/3) ... [2019-09-10 02:51:14,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cacda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:14, skipping insertion in model container [2019-09-10 02:51:14,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12" (2/3) ... [2019-09-10 02:51:14,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cacda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:14, skipping insertion in model container [2019-09-10 02:51:14,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:14" (3/3) ... [2019-09-10 02:51:14,047 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2019-09-10 02:51:14,057 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:51:14,067 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:51:14,084 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:51:14,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:51:14,112 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:51:14,112 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:51:14,112 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:51:14,113 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:51:14,113 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:51:14,113 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:51:14,114 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:51:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2019-09-10 02:51:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-10 02:51:14,150 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:14,151 INFO L399 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] [2019-09-10 02:51:14,153 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:14,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2019-09-10 02:51:14,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:14,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:14,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,211 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:14,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:14,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:51:14,560 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:14,573 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:51:14,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:51:14,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:14,591 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 2 states. [2019-09-10 02:51:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:14,620 INFO L93 Difference]: Finished difference Result 173 states and 204 transitions. [2019-09-10 02:51:14,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:51:14,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-10 02:51:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:14,633 INFO L225 Difference]: With dead ends: 173 [2019-09-10 02:51:14,634 INFO L226 Difference]: Without dead ends: 162 [2019-09-10 02:51:14,635 INFO L628 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 [2019-09-10 02:51:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-09-10 02:51:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2019-09-10 02:51:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-09-10 02:51:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2019-09-10 02:51:14,689 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2019-09-10 02:51:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:14,689 INFO L475 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2019-09-10 02:51:14,690 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:51:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2019-09-10 02:51:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-10 02:51:14,693 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:14,694 INFO L399 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] [2019-09-10 02:51:14,694 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:14,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:14,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2019-09-10 02:51:14,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:14,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:14,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,696 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:14,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:14,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:51:14,800 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:14,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:51:14,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:51:14,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:51:14,802 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 3 states. [2019-09-10 02:51:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:14,838 INFO L93 Difference]: Finished difference Result 153 states and 180 transitions. [2019-09-10 02:51:14,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:51:14,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-10 02:51:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:14,845 INFO L225 Difference]: With dead ends: 153 [2019-09-10 02:51:14,847 INFO L226 Difference]: Without dead ends: 153 [2019-09-10 02:51:14,848 INFO L628 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 [2019-09-10 02:51:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-10 02:51:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-10 02:51:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-10 02:51:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2019-09-10 02:51:14,874 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2019-09-10 02:51:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:14,875 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2019-09-10 02:51:14,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:51:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2019-09-10 02:51:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 02:51:14,878 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:14,878 INFO L399 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] [2019-09-10 02:51:14,879 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:14,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:14,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2019-09-10 02:51:14,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:14,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:14,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,880 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:15,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:15,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:51:15,034 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:15,035 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:15,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:15,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:15,037 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 7 states. [2019-09-10 02:51:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:15,553 INFO L93 Difference]: Finished difference Result 334 states and 402 transitions. [2019-09-10 02:51:15,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:51:15,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-10 02:51:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:15,558 INFO L225 Difference]: With dead ends: 334 [2019-09-10 02:51:15,558 INFO L226 Difference]: Without dead ends: 334 [2019-09-10 02:51:15,559 INFO L628 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 [2019-09-10 02:51:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-09-10 02:51:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 326. [2019-09-10 02:51:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-09-10 02:51:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2019-09-10 02:51:15,589 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2019-09-10 02:51:15,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:15,589 INFO L475 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2019-09-10 02:51:15,589 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2019-09-10 02:51:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 02:51:15,594 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:15,594 INFO L399 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] [2019-09-10 02:51:15,595 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:15,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:15,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2019-09-10 02:51:15,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:15,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:15,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:15,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:15,597 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:15,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:15,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:51:15,767 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:15,768 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:15,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:15,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:15,769 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 7 states. [2019-09-10 02:51:16,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:16,485 INFO L93 Difference]: Finished difference Result 521 states and 652 transitions. [2019-09-10 02:51:16,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-10 02:51:16,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-10 02:51:16,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:16,491 INFO L225 Difference]: With dead ends: 521 [2019-09-10 02:51:16,492 INFO L226 Difference]: Without dead ends: 521 [2019-09-10 02:51:16,492 INFO L628 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 [2019-09-10 02:51:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-09-10 02:51:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 468. [2019-09-10 02:51:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-09-10 02:51:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 565 transitions. [2019-09-10 02:51:16,533 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 565 transitions. Word has length 70 [2019-09-10 02:51:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:16,534 INFO L475 AbstractCegarLoop]: Abstraction has 468 states and 565 transitions. [2019-09-10 02:51:16,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 565 transitions. [2019-09-10 02:51:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-10 02:51:16,544 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:16,544 INFO L399 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] [2019-09-10 02:51:16,544 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2019-09-10 02:51:16,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:16,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:16,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,549 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:16,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:16,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:51:16,702 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:16,704 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:51:16,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:51:16,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:51:16,705 INFO L87 Difference]: Start difference. First operand 468 states and 565 transitions. Second operand 6 states. [2019-09-10 02:51:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:16,742 INFO L93 Difference]: Finished difference Result 478 states and 575 transitions. [2019-09-10 02:51:16,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:51:16,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-09-10 02:51:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:16,745 INFO L225 Difference]: With dead ends: 478 [2019-09-10 02:51:16,745 INFO L226 Difference]: Without dead ends: 478 [2019-09-10 02:51:16,746 INFO L628 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 [2019-09-10 02:51:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-09-10 02:51:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2019-09-10 02:51:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2019-09-10 02:51:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2019-09-10 02:51:16,769 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2019-09-10 02:51:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:16,770 INFO L475 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2019-09-10 02:51:16,770 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:51:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2019-09-10 02:51:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-10 02:51:16,772 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:16,773 INFO L399 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] [2019-09-10 02:51:16,773 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:16,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2019-09-10 02:51:16,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:16,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:16,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,775 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:16,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:16,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 02:51:16,886 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:16,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 02:51:16,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 02:51:16,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:51:16,887 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 8 states. [2019-09-10 02:51:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:16,925 INFO L93 Difference]: Finished difference Result 492 states and 589 transitions. [2019-09-10 02:51:16,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:51:16,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2019-09-10 02:51:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:16,929 INFO L225 Difference]: With dead ends: 492 [2019-09-10 02:51:16,929 INFO L226 Difference]: Without dead ends: 492 [2019-09-10 02:51:16,930 INFO L628 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 [2019-09-10 02:51:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-09-10 02:51:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 486. [2019-09-10 02:51:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-09-10 02:51:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2019-09-10 02:51:16,953 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2019-09-10 02:51:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:16,954 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2019-09-10 02:51:16,954 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 02:51:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2019-09-10 02:51:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-10 02:51:16,956 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:16,957 INFO L399 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] [2019-09-10 02:51:16,957 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:16,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2019-09-10 02:51:16,957 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:16,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:16,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,960 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:17,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:17,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:51:17,086 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:17,087 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:51:17,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:51:17,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:51:17,088 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 4 states. [2019-09-10 02:51:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:17,319 INFO L93 Difference]: Finished difference Result 1092 states and 1361 transitions. [2019-09-10 02:51:17,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:51:17,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2019-09-10 02:51:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:17,327 INFO L225 Difference]: With dead ends: 1092 [2019-09-10 02:51:17,327 INFO L226 Difference]: Without dead ends: 1092 [2019-09-10 02:51:17,327 INFO L628 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 [2019-09-10 02:51:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-09-10 02:51:17,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1075. [2019-09-10 02:51:17,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2019-09-10 02:51:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1324 transitions. [2019-09-10 02:51:17,399 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1324 transitions. Word has length 97 [2019-09-10 02:51:17,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:17,402 INFO L475 AbstractCegarLoop]: Abstraction has 1075 states and 1324 transitions. [2019-09-10 02:51:17,402 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:51:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1324 transitions. [2019-09-10 02:51:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-10 02:51:17,407 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:17,407 INFO L399 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] [2019-09-10 02:51:17,408 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2019-09-10 02:51:17,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:17,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:17,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,410 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:17,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:17,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-10 02:51:17,637 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:17,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 02:51:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 02:51:17,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-10 02:51:17,639 INFO L87 Difference]: Start difference. First operand 1075 states and 1324 transitions. Second operand 11 states. [2019-09-10 02:51:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:18,672 INFO L93 Difference]: Finished difference Result 1973 states and 2462 transitions. [2019-09-10 02:51:18,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-10 02:51:18,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2019-09-10 02:51:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:18,688 INFO L225 Difference]: With dead ends: 1973 [2019-09-10 02:51:18,689 INFO L226 Difference]: Without dead ends: 1973 [2019-09-10 02:51:18,690 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-09-10 02:51:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2019-09-10 02:51:18,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1748. [2019-09-10 02:51:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2019-09-10 02:51:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2158 transitions. [2019-09-10 02:51:18,819 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2158 transitions. Word has length 101 [2019-09-10 02:51:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:18,820 INFO L475 AbstractCegarLoop]: Abstraction has 1748 states and 2158 transitions. [2019-09-10 02:51:18,820 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 02:51:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2158 transitions. [2019-09-10 02:51:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-09-10 02:51:18,827 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:18,827 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:18,828 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2019-09-10 02:51:18,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:18,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:18,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:18,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:18,830 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 02:51:19,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:19,027 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:51:19,028 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 179 with the following transitions: [2019-09-10 02:51:19,031 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [181], [197], [198], [208], [209], [210], [211], [212], [214], [219], [221], [222], [226], [229], [233], [239], [266], [267], [270], [274], [275], [278], [280], [283], [290], [293], [296], [300], [301], [304], [307], [309], [315], [319], [322], [323], [324], [325], [327], [328], [329], [331], [334], [336], [339], [342], [351], [353], [354], [355], [379], [381], [382], [449], [450], [460], [468], [469], [470], [471], [472], [473], [474], [475], [476], [510], [511], [512], [513], [516], [517], [518], [519], [520], [521], [526], [527], [530], [531], [532], [533], [534], [535], [536], [537], [538], [539], [544], [545], [546], [547], [550], [551], [552], [553], [556], [557], [558], [559], [560], [561], [562], [563], [564], [565], [566], [570], [571], [572], [574], [575], [580], [581], [582] [2019-09-10 02:51:19,077 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:51:19,078 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:51:19,150 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:51:19,152 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. [2019-09-10 02:51:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:19,156 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:51:19,214 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:51:19,214 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:51:19,220 INFO L420 sIntCurrentIteration]: We unified 177 AI predicates to 177 [2019-09-10 02:51:19,220 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:51:19,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:51:19,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-10 02:51:19,222 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:19,223 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:51:19,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:51:19,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:19,223 INFO L87 Difference]: Start difference. First operand 1748 states and 2158 transitions. Second operand 2 states. [2019-09-10 02:51:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:19,224 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:51:19,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:51:19,225 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 178 [2019-09-10 02:51:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:19,225 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:51:19,225 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:51:19,226 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:19,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:51:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:51:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:51:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:51:19,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2019-09-10 02:51:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:19,227 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:51:19,227 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:51:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:51:19,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:51:19,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:51:19 BoogieIcfgContainer [2019-09-10 02:51:19,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:51:19,236 INFO L168 Benchmark]: Toolchain (without parser) took 7169.05 ms. Allocated memory was 140.5 MB in the beginning and 322.4 MB in the end (delta: 181.9 MB). Free memory was 86.8 MB in the beginning and 195.0 MB in the end (delta: -108.2 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:19,237 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 106.7 MB in the beginning and 106.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-09-10 02:51:19,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.06 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 86.6 MB in the beginning and 162.6 MB in the end (delta: -76.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:19,239 INFO L168 Benchmark]: Boogie Preprocessor took 85.27 ms. Allocated memory is still 200.3 MB. Free memory was 162.6 MB in the beginning and 158.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:19,240 INFO L168 Benchmark]: RCFGBuilder took 1221.57 ms. Allocated memory was 200.3 MB in the beginning and 226.0 MB in the end (delta: 25.7 MB). Free memory was 158.3 MB in the beginning and 185.7 MB in the end (delta: -27.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:19,241 INFO L168 Benchmark]: TraceAbstraction took 5194.48 ms. Allocated memory was 226.0 MB in the beginning and 322.4 MB in the end (delta: 96.5 MB). Free memory was 185.7 MB in the beginning and 195.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:19,245 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 140.5 MB. Free memory was 106.7 MB in the beginning and 106.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.06 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 86.6 MB in the beginning and 162.6 MB in the end (delta: -76.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.27 ms. Allocated memory is still 200.3 MB. Free memory was 162.6 MB in the beginning and 158.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1221.57 ms. Allocated memory was 200.3 MB in the beginning and 226.0 MB in the end (delta: 25.7 MB). Free memory was 158.3 MB in the beginning and 185.7 MB in the end (delta: -27.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5194.48 ms. Allocated memory was 226.0 MB in the beginning and 322.4 MB in the end (delta: 96.5 MB). Free memory was 185.7 MB in the beginning and 195.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 551]: 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 44 procedures, 261 locations, 1 error locations. SAFE Result, 5.1s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1663 SDtfs, 1354 SDslu, 3878 SDs, 0 SdLazy, 1777 SolverSat, 422 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1748occurred 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, 0.8022598870056498 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 309 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 814 ConstructedInterpolants, 0 QuantifiedInterpolants, 142564 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 61/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...