/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:06:07,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:06:07,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:06:07,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:06:07,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:06:07,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:06:07,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:06:07,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:06:07,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:06:07,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:06:07,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:06:07,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:06:07,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:06:07,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:06:07,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:06:07,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:06:07,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:06:07,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:06:07,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:06:07,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:06:07,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:06:07,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:06:07,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:06:07,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:06:07,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:06:07,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:06:07,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:06:07,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:06:07,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:06:07,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:06:07,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:06:07,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:06:07,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:06:07,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:06:07,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:06:07,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:06:07,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:06:07,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:06:07,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:06:07,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:06:07,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:06:07,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:06:07,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:06:07,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:06:07,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:06:07,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:06:07,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:06:07,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:06:07,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:06:07,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:06:07,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:06:07,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:06:07,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:06:07,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:06:07,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:06:07,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:06:07,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:06:07,880 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:06:07,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:06:07,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:06:07,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:06:07,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:06:07,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:06:07,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:06:07,881 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:06:08,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:06:08,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:06:08,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:06:08,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:06:08,195 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:06:08,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-08-22 18:06:08,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d585193da/ac333cb614134c88994534ee19c79cc4/FLAG9eb7992d5 [2020-08-22 18:06:08,839 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:06:08,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-08-22 18:06:08,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d585193da/ac333cb614134c88994534ee19c79cc4/FLAG9eb7992d5 [2020-08-22 18:06:09,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d585193da/ac333cb614134c88994534ee19c79cc4 [2020-08-22 18:06:09,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:06:09,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:06:09,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:06:09,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:06:09,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:06:09,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7384fbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09, skipping insertion in model container [2020-08-22 18:06:09,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:06:09,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:06:09,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:06:09,622 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:06:09,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:06:09,788 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:06:09,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09 WrapperNode [2020-08-22 18:06:09,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:06:09,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:06:09,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:06:09,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:06:09,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (1/1) ... [2020-08-22 18:06:09,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:06:09,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:06:09,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:06:09,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:06:09,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (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 [2020-08-22 18:06:09,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:06:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:06:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:06:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:06:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:06:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:06:09,967 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:06:09,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:06:09,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:06:09,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:06:09,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:06:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:06:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:06:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:06:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 18:06:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 18:06:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:06:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 18:06:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:06:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:06:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:06:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:06:09,974 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 18:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 18:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:06:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:06:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:06:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:06:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:06:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:06:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:06:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:06:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:06:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:06:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:06:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:06:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:06:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:06:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:06:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:06:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:06:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:06:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:06:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:06:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:06:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:06:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:06:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:06:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:06:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:06:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:06:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:06:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:06:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 18:06:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:06:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:06:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:06:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:06:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:06:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:06:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:06:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:06:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 18:06:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 18:06:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 18:06:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:06:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 18:06:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:06:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:06:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:06:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:06:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:06:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:06:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:06:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:06:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:06:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:06:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:06:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:06:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:06:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:06:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:06:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:06:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:06:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:06:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:06:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:06:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:06:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:06:11,347 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:06:11,348 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:06:11,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:11 BoogieIcfgContainer [2020-08-22 18:06:11,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:06:11,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:06:11,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:06:11,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:06:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:06:09" (1/3) ... [2020-08-22 18:06:11,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744aad26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:11, skipping insertion in model container [2020-08-22 18:06:11,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:09" (2/3) ... [2020-08-22 18:06:11,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744aad26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:11, skipping insertion in model container [2020-08-22 18:06:11,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:11" (3/3) ... [2020-08-22 18:06:11,363 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2020-08-22 18:06:11,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:06:11,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:06:11,395 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:06:11,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:06:11,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:06:11,415 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:06:11,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:06:11,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:06:11,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:06:11,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:06:11,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:06:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states. [2020-08-22 18:06:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:06:11,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:06:11,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:06:11,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:06:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:06:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1710422987, now seen corresponding path program 1 times [2020-08-22 18:06:11,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:06:11,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991013427] [2020-08-22 18:06:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:06:11,536 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:06:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,164 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:06:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:06:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:06:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:06:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:06:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:06:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:06:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:06:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:06:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:06:12,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991013427] [2020-08-22 18:06:12,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:06:12,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:06:12,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928602237] [2020-08-22 18:06:12,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:06:12,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:06:12,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:06:12,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:06:12,405 INFO L87 Difference]: Start difference. First operand 358 states. Second operand 3 states. [2020-08-22 18:06:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:06:14,065 INFO L93 Difference]: Finished difference Result 587 states and 700 transitions. [2020-08-22 18:06:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:06:14,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:06:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:06:14,086 INFO L225 Difference]: With dead ends: 587 [2020-08-22 18:06:14,086 INFO L226 Difference]: Without dead ends: 354 [2020-08-22 18:06:14,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:06:14,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-08-22 18:06:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 307. [2020-08-22 18:06:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-08-22 18:06:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 339 transitions. [2020-08-22 18:06:14,289 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 339 transitions. Word has length 153 [2020-08-22 18:06:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:06:14,290 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 339 transitions. [2020-08-22 18:06:14,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:06:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 339 transitions. [2020-08-22 18:06:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:06:14,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:06:14,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:06:14,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:06:14,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:06:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:06:14,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1065336794, now seen corresponding path program 1 times [2020-08-22 18:06:14,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:06:14,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635146600] [2020-08-22 18:06:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:06:14,301 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:06:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,617 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:06:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:06:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:06:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:06:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:06:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:06:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:06:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:06:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:06:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:06:14,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635146600] [2020-08-22 18:06:14,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:06:14,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:06:14,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385894696] [2020-08-22 18:06:14,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:06:14,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:06:14,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:06:14,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:06:14,695 INFO L87 Difference]: Start difference. First operand 307 states and 339 transitions. Second operand 4 states. [2020-08-22 18:06:15,289 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:06:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:06:16,575 INFO L93 Difference]: Finished difference Result 498 states and 567 transitions. [2020-08-22 18:06:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:06:16,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:06:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:06:16,581 INFO L225 Difference]: With dead ends: 498 [2020-08-22 18:06:16,581 INFO L226 Difference]: Without dead ends: 337 [2020-08-22 18:06:16,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:06:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-22 18:06:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 297. [2020-08-22 18:06:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-08-22 18:06:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2020-08-22 18:06:16,676 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 154 [2020-08-22 18:06:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:06:16,676 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2020-08-22 18:06:16,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:06:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2020-08-22 18:06:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:06:16,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:06:16,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:06:16,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:06:16,680 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:06:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:06:16,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2091062943, now seen corresponding path program 1 times [2020-08-22 18:06:16,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:06:16,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316630019] [2020-08-22 18:06:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:06:16,684 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:06:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,073 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:06:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:06:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:06:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:06:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:06:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:06:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:06:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:06:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:06:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:06:17,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316630019] [2020-08-22 18:06:17,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:06:17,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:06:17,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994240804] [2020-08-22 18:06:17,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:06:17,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:06:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:06:17,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:06:17,226 INFO L87 Difference]: Start difference. First operand 297 states and 326 transitions. Second operand 9 states. [2020-08-22 18:06:17,661 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:06:18,022 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:06:18,259 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:06:18,498 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:06:18,743 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:06:18,997 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:06:19,891 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:06:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:06:22,795 INFO L93 Difference]: Finished difference Result 821 states and 951 transitions. [2020-08-22 18:06:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:06:22,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:06:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:06:22,801 INFO L225 Difference]: With dead ends: 821 [2020-08-22 18:06:22,801 INFO L226 Difference]: Without dead ends: 634 [2020-08-22 18:06:22,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:06:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-08-22 18:06:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 559. [2020-08-22 18:06:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-08-22 18:06:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 632 transitions. [2020-08-22 18:06:22,995 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 632 transitions. Word has length 163 [2020-08-22 18:06:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:06:22,995 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 632 transitions. [2020-08-22 18:06:22,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:06:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 632 transitions. [2020-08-22 18:06:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 18:06:22,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:06:23,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:06:23,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:06:23,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:06:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:06:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1074637363, now seen corresponding path program 1 times [2020-08-22 18:06:23,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:06:23,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718567144] [2020-08-22 18:06:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:06:23,004 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:06:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,324 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:06:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:06:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:06:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:06:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:06:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:06:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:06:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 18:06:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-22 18:06:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 18:06:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:06:23,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718567144] [2020-08-22 18:06:23,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:06:23,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:06:23,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150572885] [2020-08-22 18:06:23,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:06:23,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:06:23,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:06:23,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:06:23,496 INFO L87 Difference]: Start difference. First operand 559 states and 632 transitions. Second operand 9 states. [2020-08-22 18:06:24,098 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:06:26,437 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:06:26,699 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:06:26,998 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:06:27,353 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:06:27,578 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:06:27,814 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:06:28,035 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:06:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:06:29,191 INFO L93 Difference]: Finished difference Result 1552 states and 1873 transitions. [2020-08-22 18:06:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:06:29,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-08-22 18:06:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:06:29,199 INFO L225 Difference]: With dead ends: 1552 [2020-08-22 18:06:29,200 INFO L226 Difference]: Without dead ends: 1103 [2020-08-22 18:06:29,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:06:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-22 18:06:29,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 995. [2020-08-22 18:06:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-08-22 18:06:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1151 transitions. [2020-08-22 18:06:29,531 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1151 transitions. Word has length 172 [2020-08-22 18:06:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:06:29,532 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1151 transitions. [2020-08-22 18:06:29,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:06:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1151 transitions. [2020-08-22 18:06:29,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:06:29,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:06:29,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:06:29,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:06:29,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:06:29,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:06:29,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1555840203, now seen corresponding path program 1 times [2020-08-22 18:06:29,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:06:29,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75949431] [2020-08-22 18:06:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:06:29,542 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:06:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:06:29,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:06:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:06:29,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:06:29,829 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:06:29,829 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:06:29,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:06:29,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:06:29 BoogieIcfgContainer [2020-08-22 18:06:29,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:06:29,858 INFO L168 Benchmark]: Toolchain (without parser) took 20753.53 ms. Allocated memory was 139.5 MB in the beginning and 625.5 MB in the end (delta: 486.0 MB). Free memory was 102.6 MB in the beginning and 131.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 457.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:29,859 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:06:29,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.57 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 171.1 MB in the end (delta: -68.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:29,861 INFO L168 Benchmark]: Boogie Preprocessor took 106.66 ms. Allocated memory is still 202.9 MB. Free memory was 171.1 MB in the beginning and 166.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:29,862 INFO L168 Benchmark]: RCFGBuilder took 1458.00 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 170.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:29,863 INFO L168 Benchmark]: TraceAbstraction took 18500.29 ms. Allocated memory was 236.5 MB in the beginning and 625.5 MB in the end (delta: 389.0 MB). Free memory was 170.4 MB in the beginning and 131.4 MB in the end (delta: 39.0 MB). Peak memory consumption was 428.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:29,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.57 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 171.1 MB in the end (delta: -68.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.66 ms. Allocated memory is still 202.9 MB. Free memory was 171.1 MB in the beginning and 166.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1458.00 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 170.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18500.29 ms. Allocated memory was 236.5 MB in the beginning and 625.5 MB in the end (delta: 389.0 MB). Free memory was 170.4 MB in the beginning and 131.4 MB in the end (delta: 39.0 MB). Peak memory consumption was 428.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L188] int pumpRunning = 0; [L189] int systemActive = 1; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L827] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L445] int splverifierCounter ; [L446] int tmp ; [L447] int tmp___0 ; [L448] int tmp___1 ; [L449] int tmp___2 ; [L452] splverifierCounter = 0 [L454] COND TRUE 1 [L456] COND TRUE splverifierCounter < 4 [L462] tmp = __VERIFIER_nondet_int() [L464] COND TRUE \read(tmp) [L466] CALL waterRise() [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 [L466] RET waterRise() [L472] tmp___0 = __VERIFIER_nondet_int() [L474] COND FALSE !(\read(tmp___0)) [L482] tmp___2 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___2)) [L488] tmp___1 = __VERIFIER_nondet_int() [L490] COND TRUE \read(tmp___1) [L492] CALL stopSystem() [L432] COND FALSE !(\read(pumpRunning)) [L439] systemActive = 0 [L492] RET stopSystem() [L499] CALL timeShift() [L196] COND FALSE !(\read(pumpRunning)) [L203] COND FALSE !(\read(systemActive)) [L211] CALL __utac_acc__Specification3_spec__1() [L625] int tmp ; [L626] int tmp___0 ; [L627] int tmp___1 ; [L631] CALL, EXPR isMethaneLevelCritical() [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L631] RET, EXPR isMethaneLevelCritical() [L631] tmp = isMethaneLevelCritical() [L633] COND FALSE !(\read(tmp)) [L637] CALL, EXPR getWaterLevel() [L583] int retValue_acc ; [L586] retValue_acc = waterLevel [L587] return (retValue_acc); [L637] RET, EXPR getWaterLevel() [L637] tmp___0 = getWaterLevel() [L639] COND TRUE tmp___0 == 2 [L641] CALL, EXPR isPumpRunning() [L346] int retValue_acc ; [L349] retValue_acc = pumpRunning [L350] return (retValue_acc); [L641] RET, EXPR isPumpRunning() [L641] tmp___1 = isPumpRunning() [L643] COND FALSE !(\read(tmp___1)) [L647] CALL __automaton_fail() [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 670 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1171 SDtfs, 1760 SDslu, 1311 SDs, 0 SdLazy, 3882 SolverSat, 606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=995occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 270 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...