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_spec2_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:57:50,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:57:50,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:57:50,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:57:50,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:57:50,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:57:50,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:57:50,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:57:50,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:57:50,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:57:50,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:57:50,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:57:50,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:57:50,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:57:50,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:57:50,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:57:50,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:57:50,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:57:50,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:57:50,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:57:50,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:57:50,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:57:50,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:57:50,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:57:50,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:57:50,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:57:50,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:57:50,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:57:50,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:57:50,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:57:50,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:57:50,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:57:50,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:57:50,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:57:50,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:57:50,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:57:50,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:57:50,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:57:50,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:57:50,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:57:50,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:57:50,073 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 [2019-10-03 02:57:50,099 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:57:50,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:57:50,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:57:50,100 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:57:50,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:57:50,101 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:57:50,101 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:57:50,101 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:57:50,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:57:50,102 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:57:50,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:57:50,102 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:57:50,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:57:50,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:57:50,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:57:50,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:57:50,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:57:50,104 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:57:50,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:57:50,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:57:50,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:57:50,104 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:57:50,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:57:50,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:57:50,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:57:50,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:57:50,109 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:57:50,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:57:50,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:57:50,109 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:57:50,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:57:50,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:57:50,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:57:50,180 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:57:50,180 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:57:50,181 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-10-03 02:57:50,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4efc1558/1829b7f2db4b4cfeb965a6ee6bf30a06/FLAG10c737acd [2019-10-03 02:57:50,750 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:57:50,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-10-03 02:57:50,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4efc1558/1829b7f2db4b4cfeb965a6ee6bf30a06/FLAG10c737acd [2019-10-03 02:57:51,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4efc1558/1829b7f2db4b4cfeb965a6ee6bf30a06 [2019-10-03 02:57:51,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:57:51,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:57:51,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:57:51,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:57:51,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:57:51,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5293757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51, skipping insertion in model container [2019-10-03 02:57:51,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,085 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:57:51,130 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:57:51,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:57:51,564 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:57:51,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:57:51,701 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:57:51,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51 WrapperNode [2019-10-03 02:57:51,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:57:51,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:57:51,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:57:51,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:57:51,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (1/1) ... [2019-10-03 02:57:51,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:57:51,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:57:51,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:57:51,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:57:51,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (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 [2019-10-03 02:57:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:57:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:57:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-03 02:57:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-03 02:57:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-03 02:57:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-03 02:57:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-03 02:57:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:57:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-03 02:57:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-03 02:57:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-03 02:57:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-03 02:57:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-03 02:57:51,892 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-03 02:57:51,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-03 02:57:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-03 02:57:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-03 02:57:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-03 02:57:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-03 02:57:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-03 02:57:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-03 02:57:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-03 02:57:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:57:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-03 02:57:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-03 02:57:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-03 02:57:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-03 02:57:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-03 02:57:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-03 02:57:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-03 02:57:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-03 02:57:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-03 02:57:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-03 02:57:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-03 02:57:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-03 02:57:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-03 02:57:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-03 02:57:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-03 02:57:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-03 02:57:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-03 02:57:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-03 02:57:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-03 02:57:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-03 02:57:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-03 02:57:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:57:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:57:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-03 02:57:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-03 02:57:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-03 02:57:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-03 02:57:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-03 02:57:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-03 02:57:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-03 02:57:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-03 02:57:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-03 02:57:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-03 02:57:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-03 02:57:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-03 02:57:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-03 02:57:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-03 02:57:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:57:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-03 02:57:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-03 02:57:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-03 02:57:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-03 02:57:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-03 02:57:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-03 02:57:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-03 02:57:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-03 02:57:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-03 02:57:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:57:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-03 02:57:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-03 02:57:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-03 02:57:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-03 02:57:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-03 02:57:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-03 02:57:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:57:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-03 02:57:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-03 02:57:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-03 02:57:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-03 02:57:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-03 02:57:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-03 02:57:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:57:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:57:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-03 02:57:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:57:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:57:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:57:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:57:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-03 02:57:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:57:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-03 02:57:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-03 02:57:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:57:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-03 02:57:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-03 02:57:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-03 02:57:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:57:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:57:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:57:52,968 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:57:52,969 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-03 02:57:52,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:57:52 BoogieIcfgContainer [2019-10-03 02:57:52,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:57:52,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:57:52,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:57:52,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:57:52,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:57:51" (1/3) ... [2019-10-03 02:57:52,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffde78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:57:52, skipping insertion in model container [2019-10-03 02:57:52,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:57:51" (2/3) ... [2019-10-03 02:57:52,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffde78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:57:52, skipping insertion in model container [2019-10-03 02:57:52,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:57:52" (3/3) ... [2019-10-03 02:57:52,979 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2019-10-03 02:57:52,988 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:57:52,999 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:57:53,015 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:57:53,037 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:57:53,037 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:57:53,037 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:57:53,037 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:57:53,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:57:53,038 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:57:53,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:57:53,038 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:57:53,058 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2019-10-03 02:57:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-03 02:57:53,072 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:53,073 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:53,076 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:53,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:53,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1165852340, now seen corresponding path program 1 times [2019-10-03 02:57:53,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:53,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:53,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:53,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:53,140 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:53,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:53,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:57:53,478 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:53,484 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:57:53,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:57:53,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:57:53,501 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 2 states. [2019-10-03 02:57:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:53,530 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2019-10-03 02:57:53,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:57:53,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-10-03 02:57:53,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:53,544 INFO L225 Difference]: With dead ends: 172 [2019-10-03 02:57:53,545 INFO L226 Difference]: Without dead ends: 161 [2019-10-03 02:57:53,546 INFO L640 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 [2019-10-03 02:57:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-03 02:57:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2019-10-03 02:57:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-10-03 02:57:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 193 transitions. [2019-10-03 02:57:53,614 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 193 transitions. Word has length 51 [2019-10-03 02:57:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:53,614 INFO L475 AbstractCegarLoop]: Abstraction has 161 states and 193 transitions. [2019-10-03 02:57:53,615 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:57:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 193 transitions. [2019-10-03 02:57:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-03 02:57:53,619 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:53,619 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:53,620 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:53,620 INFO L82 PathProgramCache]: Analyzing trace with hash -558328651, now seen corresponding path program 1 times [2019-10-03 02:57:53,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:53,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:53,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:53,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:53,623 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:53,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:53,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:57:53,772 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:53,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:57:53,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:57:53,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:57:53,776 INFO L87 Difference]: Start difference. First operand 161 states and 193 transitions. Second operand 3 states. [2019-10-03 02:57:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:53,811 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2019-10-03 02:57:53,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:57:53,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-03 02:57:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:53,818 INFO L225 Difference]: With dead ends: 152 [2019-10-03 02:57:53,819 INFO L226 Difference]: Without dead ends: 152 [2019-10-03 02:57:53,820 INFO L640 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 [2019-10-03 02:57:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-10-03 02:57:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-10-03 02:57:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-10-03 02:57:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2019-10-03 02:57:53,849 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 52 [2019-10-03 02:57:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:53,850 INFO L475 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2019-10-03 02:57:53,850 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:57:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2019-10-03 02:57:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-03 02:57:53,855 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:53,856 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:53,856 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:53,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2137633786, now seen corresponding path program 1 times [2019-10-03 02:57:53,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:53,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:53,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:53,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:53,861 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:53,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:53,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:57:53,993 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:53,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:57:53,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:57:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:57:53,995 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 7 states. [2019-10-03 02:57:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:54,626 INFO L93 Difference]: Finished difference Result 327 states and 398 transitions. [2019-10-03 02:57:54,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:57:54,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-03 02:57:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:54,631 INFO L225 Difference]: With dead ends: 327 [2019-10-03 02:57:54,631 INFO L226 Difference]: Without dead ends: 327 [2019-10-03 02:57:54,632 INFO L640 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 [2019-10-03 02:57:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-03 02:57:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2019-10-03 02:57:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-10-03 02:57:54,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 392 transitions. [2019-10-03 02:57:54,677 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 392 transitions. Word has length 56 [2019-10-03 02:57:54,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:54,677 INFO L475 AbstractCegarLoop]: Abstraction has 319 states and 392 transitions. [2019-10-03 02:57:54,678 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:57:54,678 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 392 transitions. [2019-10-03 02:57:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-03 02:57:54,682 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:54,682 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:54,683 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1129081232, now seen corresponding path program 1 times [2019-10-03 02:57:54,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:54,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:54,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:54,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:54,691 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:54,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:54,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:57:54,820 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:54,821 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:57:54,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:57:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:57:54,821 INFO L87 Difference]: Start difference. First operand 319 states and 392 transitions. Second operand 6 states. [2019-10-03 02:57:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:55,107 INFO L93 Difference]: Finished difference Result 592 states and 730 transitions. [2019-10-03 02:57:55,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-03 02:57:55,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-10-03 02:57:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:55,118 INFO L225 Difference]: With dead ends: 592 [2019-10-03 02:57:55,118 INFO L226 Difference]: Without dead ends: 592 [2019-10-03 02:57:55,119 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:57:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-03 02:57:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 586. [2019-10-03 02:57:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-10-03 02:57:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 724 transitions. [2019-10-03 02:57:55,170 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 724 transitions. Word has length 62 [2019-10-03 02:57:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:55,171 INFO L475 AbstractCegarLoop]: Abstraction has 586 states and 724 transitions. [2019-10-03 02:57:55,171 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:57:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 724 transitions. [2019-10-03 02:57:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-03 02:57:55,174 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:55,174 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:55,174 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:55,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:55,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1112141772, now seen corresponding path program 1 times [2019-10-03 02:57:55,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:55,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:55,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:55,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:55,179 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:57:55,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:55,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:57:55,301 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:55,302 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:57:55,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:57:55,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:57:55,304 INFO L87 Difference]: Start difference. First operand 586 states and 724 transitions. Second operand 7 states. [2019-10-03 02:57:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:56,113 INFO L93 Difference]: Finished difference Result 963 states and 1218 transitions. [2019-10-03 02:57:56,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-03 02:57:56,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-10-03 02:57:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:56,122 INFO L225 Difference]: With dead ends: 963 [2019-10-03 02:57:56,123 INFO L226 Difference]: Without dead ends: 963 [2019-10-03 02:57:56,123 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-03 02:57:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-10-03 02:57:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 867. [2019-10-03 02:57:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2019-10-03 02:57:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1055 transitions. [2019-10-03 02:57:56,171 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1055 transitions. Word has length 66 [2019-10-03 02:57:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:56,171 INFO L475 AbstractCegarLoop]: Abstraction has 867 states and 1055 transitions. [2019-10-03 02:57:56,171 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:57:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1055 transitions. [2019-10-03 02:57:56,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-03 02:57:56,179 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:56,179 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:56,180 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:56,181 INFO L82 PathProgramCache]: Analyzing trace with hash 831572138, now seen corresponding path program 1 times [2019-10-03 02:57:56,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:56,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:56,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:56,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:56,186 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:57:56,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:56,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-03 02:57:56,315 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:56,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-03 02:57:56,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-03 02:57:56,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:57:56,316 INFO L87 Difference]: Start difference. First operand 867 states and 1055 transitions. Second operand 8 states. [2019-10-03 02:57:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:56,353 INFO L93 Difference]: Finished difference Result 895 states and 1083 transitions. [2019-10-03 02:57:56,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-03 02:57:56,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-03 02:57:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:56,359 INFO L225 Difference]: With dead ends: 895 [2019-10-03 02:57:56,359 INFO L226 Difference]: Without dead ends: 895 [2019-10-03 02:57:56,359 INFO L640 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 [2019-10-03 02:57:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-10-03 02:57:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 883. [2019-10-03 02:57:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-10-03 02:57:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1071 transitions. [2019-10-03 02:57:56,395 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1071 transitions. Word has length 108 [2019-10-03 02:57:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:56,395 INFO L475 AbstractCegarLoop]: Abstraction has 883 states and 1071 transitions. [2019-10-03 02:57:56,396 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-03 02:57:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1071 transitions. [2019-10-03 02:57:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-03 02:57:56,399 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:56,399 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:56,399 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:56,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1107589908, now seen corresponding path program 1 times [2019-10-03 02:57:56,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:56,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:56,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:56,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:56,402 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:57:56,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:56,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:57:56,469 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:56,469 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:57:56,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:57:56,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:57:56,470 INFO L87 Difference]: Start difference. First operand 883 states and 1071 transitions. Second operand 6 states. [2019-10-03 02:57:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:56,504 INFO L93 Difference]: Finished difference Result 911 states and 1103 transitions. [2019-10-03 02:57:56,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 02:57:56,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-10-03 02:57:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:56,510 INFO L225 Difference]: With dead ends: 911 [2019-10-03 02:57:56,510 INFO L226 Difference]: Without dead ends: 911 [2019-10-03 02:57:56,511 INFO L640 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 [2019-10-03 02:57:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2019-10-03 02:57:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 903. [2019-10-03 02:57:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-10-03 02:57:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1091 transitions. [2019-10-03 02:57:56,575 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1091 transitions. Word has length 108 [2019-10-03 02:57:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:56,575 INFO L475 AbstractCegarLoop]: Abstraction has 903 states and 1091 transitions. [2019-10-03 02:57:56,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:57:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1091 transitions. [2019-10-03 02:57:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-03 02:57:56,578 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:56,578 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:56,578 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:56,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1600742153, now seen corresponding path program 1 times [2019-10-03 02:57:56,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:56,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:56,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:56,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:56,582 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:57:56,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:57:56,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:57:56,684 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:56,684 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:57:56,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:57:56,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:57:56,685 INFO L87 Difference]: Start difference. First operand 903 states and 1091 transitions. Second operand 4 states. [2019-10-03 02:57:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:56,914 INFO L93 Difference]: Finished difference Result 1970 states and 2479 transitions. [2019-10-03 02:57:56,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:57:56,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-10-03 02:57:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:56,927 INFO L225 Difference]: With dead ends: 1970 [2019-10-03 02:57:56,928 INFO L226 Difference]: Without dead ends: 1970 [2019-10-03 02:57:56,928 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:57:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2019-10-03 02:57:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1939. [2019-10-03 02:57:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2019-10-03 02:57:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2407 transitions. [2019-10-03 02:57:57,011 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2407 transitions. Word has length 108 [2019-10-03 02:57:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:57,011 INFO L475 AbstractCegarLoop]: Abstraction has 1939 states and 2407 transitions. [2019-10-03 02:57:57,012 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:57:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2407 transitions. [2019-10-03 02:57:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-03 02:57:57,018 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:57:57,018 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:57:57,018 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:57:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:57,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1324720637, now seen corresponding path program 1 times [2019-10-03 02:57:57,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:57:57,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:57,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:57:57,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:57:57,022 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:57:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:57:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:57:57,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:57:57,190 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:57:57,191 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-10-03 02:57:57,193 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [181], [197], [198], [201], [203], [206], [208], [211], [214], [226], [227], [237], [239], [244], [247], [250], [252], [257], [259], [260], [266], [270], [303], [304], [312], [315], [317], [320], [330], [333], [337], [338], [341], [342], [357], [360], [361], [362], [386], [388], [389], [456], [457], [462], [464], [467], [475], [476], [477], [478], [479], [480], [481], [482], [483], [525], [526], [527], [528], [529], [530], [533], [537], [538], [539], [540], [541], [543], [544], [545], [546], [547], [548], [551], [552], [553], [559], [560], [561], [562], [573], [574], [577], [578], [579], [581], [582], [587], [588], [589] [2019-10-03 02:57:57,239 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:57:57,239 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:57:57,316 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:57:57,318 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 71 root evaluator evaluations with a maximum evaluation depth of 0. Performed 71 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-10-03 02:57:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:57:57,322 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:57:57,366 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:57:57,366 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:57:57,370 INFO L420 sIntCurrentIteration]: We unified 111 AI predicates to 111 [2019-10-03 02:57:57,370 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:57:57,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:57:57,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-10-03 02:57:57,371 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:57:57,371 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:57:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:57:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:57:57,372 INFO L87 Difference]: Start difference. First operand 1939 states and 2407 transitions. Second operand 2 states. [2019-10-03 02:57:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:57:57,373 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:57:57,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:57:57,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-03 02:57:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:57:57,373 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:57:57,374 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:57:57,374 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:57:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:57:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:57:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:57:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:57:57,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2019-10-03 02:57:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:57:57,375 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:57:57,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:57:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:57:57,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:57:57,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:57:57 BoogieIcfgContainer [2019-10-03 02:57:57,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:57:57,384 INFO L168 Benchmark]: Toolchain (without parser) took 6314.92 ms. Allocated memory was 140.5 MB in the beginning and 324.0 MB in the end (delta: 183.5 MB). Free memory was 86.8 MB in the beginning and 129.6 MB in the end (delta: -42.8 MB). Peak memory consumption was 140.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:57,385 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:57:57,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.14 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 165.6 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:57,387 INFO L168 Benchmark]: Boogie Preprocessor took 108.13 ms. Allocated memory is still 200.3 MB. Free memory was 165.6 MB in the beginning and 161.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:57,388 INFO L168 Benchmark]: RCFGBuilder took 1159.74 ms. Allocated memory was 200.3 MB in the beginning and 225.4 MB in the end (delta: 25.2 MB). Free memory was 161.3 MB in the beginning and 188.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:57,389 INFO L168 Benchmark]: TraceAbstraction took 4409.73 ms. Allocated memory was 225.4 MB in the beginning and 324.0 MB in the end (delta: 98.6 MB). Free memory was 188.8 MB in the beginning and 129.6 MB in the end (delta: 59.2 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:57:57,393 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.14 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 165.6 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.13 ms. Allocated memory is still 200.3 MB. Free memory was 165.6 MB in the beginning and 161.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1159.74 ms. Allocated memory was 200.3 MB in the beginning and 225.4 MB in the end (delta: 25.2 MB). Free memory was 161.3 MB in the beginning and 188.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4409.73 ms. Allocated memory was 225.4 MB in the beginning and 324.0 MB in the end (delta: 98.6 MB). Free memory was 188.8 MB in the beginning and 129.6 MB in the end (delta: 59.2 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 150]: 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, 263 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1643 SDtfs, 900 SDslu, 3948 SDs, 0 SdLazy, 1066 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1939occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 161 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 723 NumberOfCodeBlocks, 723 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 714 ConstructedInterpolants, 0 QuantifiedInterpolants, 96980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...