/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_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:22:21,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:22:21,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:22:21,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:22:21,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:22:21,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:22:21,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:22:21,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:22:21,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:22:21,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:22:21,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:22:21,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:22:21,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:22:21,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:22:21,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:22:21,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:22:21,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:22:21,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:22:21,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:22:21,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:22:21,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:22:21,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:22:21,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:22:21,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:22:21,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:22:21,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:22:21,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:22:21,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:22:21,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:22:21,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:22:21,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:22:21,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:22:21,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:22:21,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:22:21,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:22:21,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:22:21,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:22:21,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:22:21,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:22:21,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:22:21,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:22:21,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:22:22,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:22:22,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:22:22,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:22:22,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:22:22,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:22:22,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:22:22,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:22:22,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:22:22,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:22:22,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:22:22,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:22:22,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:22:22,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:22:22,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:22:22,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:22:22,008 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:22:22,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:22:22,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:22:22,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:22:22,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:22:22,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:22:22,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:22:22,009 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:22:22,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:22:22,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:22:22,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:22:22,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:22:22,477 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:22:22,478 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-09-04 15:22:22,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b33d76d/49f6b68c4a51424ebe794a84dcc66527/FLAGa4883a736 [2020-09-04 15:22:23,154 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:22:23,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-09-04 15:22:23,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b33d76d/49f6b68c4a51424ebe794a84dcc66527/FLAGa4883a736 [2020-09-04 15:22:23,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b33d76d/49f6b68c4a51424ebe794a84dcc66527 [2020-09-04 15:22:23,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:22:23,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:22:23,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:22:23,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:22:23,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:22:23,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:22:23" (1/1) ... [2020-09-04 15:22:23,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78532141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:23, skipping insertion in model container [2020-09-04 15:22:23,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:22:23" (1/1) ... [2020-09-04 15:22:23,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:22:23,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:22:23,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:22:23,957 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:22:24,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:22:24,083 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:22:24,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24 WrapperNode [2020-09-04 15:22:24,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:22:24,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:22:24,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:22:24,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:22:24,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... [2020-09-04 15:22:24,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... [2020-09-04 15:22:24,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... [2020-09-04 15:22:24,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... [2020-09-04 15:22:24,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... [2020-09-04 15:22:24,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... [2020-09-04 15:22:24,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... [2020-09-04 15:22:24,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:22:24,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:22:24,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:22:24,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:22:24,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:22:24,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:22:24,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:22:24,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:22:24,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:22:24,293 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:22:24,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:22:24,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:22:24,294 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:22:24,294 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:22:24,294 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:22:24,295 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:22:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:22:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:22:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:22:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:22:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:22:24,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:22:24,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:22:24,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:22:24,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:22:24,299 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:22:24,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:22:24,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:22:24,302 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:22:24,302 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:22:24,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:22:24,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:22:24,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:22:24,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:22:24,303 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:22:24,303 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:22:24,303 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:22:24,304 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:22:24,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:22:24,304 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:22:24,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:22:24,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:22:24,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:22:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:22:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:22:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:22:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:22:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:22:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:22:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:22:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:22:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:22:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:22:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:22:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:22:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:22:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:22:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:22:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:22:25,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:22:25,445 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:22:25,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:22:25 BoogieIcfgContainer [2020-09-04 15:22:25,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:22:25,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:22:25,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:22:25,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:22:25,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:22:23" (1/3) ... [2020-09-04 15:22:25,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2ac19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:22:25, skipping insertion in model container [2020-09-04 15:22:25,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:24" (2/3) ... [2020-09-04 15:22:25,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2ac19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:22:25, skipping insertion in model container [2020-09-04 15:22:25,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:22:25" (3/3) ... [2020-09-04 15:22:25,461 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product07.cil.c [2020-09-04 15:22:25,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:22:25,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:22:25,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:22:25,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:22:25,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:22:25,523 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:22:25,523 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:22:25,523 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:22:25,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:22:25,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:22:25,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:22:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2020-09-04 15:22:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:22:25,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:25,567 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] [2020-09-04 15:22:25,567 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:25,574 INFO L82 PathProgramCache]: Analyzing trace with hash 957582246, now seen corresponding path program 1 times [2020-09-04 15:22:25,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:25,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39331783] [2020-09-04 15:22:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:25,655 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,374 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:22:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:22:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:22:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:26,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39331783] [2020-09-04 15:22:26,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:26,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:22:26,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036317435] [2020-09-04 15:22:26,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:22:26,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:26,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:22:26,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:22:26,615 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2020-09-04 15:22:27,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:27,994 INFO L93 Difference]: Finished difference Result 427 states and 514 transitions. [2020-09-04 15:22:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:22:27,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:22:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:28,017 INFO L225 Difference]: With dead ends: 427 [2020-09-04 15:22:28,017 INFO L226 Difference]: Without dead ends: 271 [2020-09-04 15:22:28,023 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 [2020-09-04 15:22:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-04 15:22:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 230. [2020-09-04 15:22:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 15:22:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 250 transitions. [2020-09-04 15:22:28,176 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 250 transitions. Word has length 153 [2020-09-04 15:22:28,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:28,177 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 250 transitions. [2020-09-04 15:22:28,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:22:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 250 transitions. [2020-09-04 15:22:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:22:28,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:28,183 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] [2020-09-04 15:22:28,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:22:28,183 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:28,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1482403721, now seen corresponding path program 1 times [2020-09-04 15:22:28,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:28,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682002521] [2020-09-04 15:22:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:28,188 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,544 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:28,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:22:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:22:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:22:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:28,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682002521] [2020-09-04 15:22:28,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:28,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:22:28,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36703778] [2020-09-04 15:22:28,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:22:28,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:28,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:22:28,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:22:28,650 INFO L87 Difference]: Start difference. First operand 230 states and 250 transitions. Second operand 4 states. [2020-09-04 15:22:29,325 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:22:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:30,146 INFO L93 Difference]: Finished difference Result 338 states and 381 transitions. [2020-09-04 15:22:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:22:30,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:22:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:30,151 INFO L225 Difference]: With dead ends: 338 [2020-09-04 15:22:30,152 INFO L226 Difference]: Without dead ends: 254 [2020-09-04 15:22:30,154 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 [2020-09-04 15:22:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-04 15:22:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 220. [2020-09-04 15:22:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-04 15:22:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 237 transitions. [2020-09-04 15:22:30,223 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 237 transitions. Word has length 154 [2020-09-04 15:22:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:30,223 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 237 transitions. [2020-09-04 15:22:30,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:22:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 237 transitions. [2020-09-04 15:22:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:22:30,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:30,227 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] [2020-09-04 15:22:30,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:22:30,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:30,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1724777335, now seen corresponding path program 1 times [2020-09-04 15:22:30,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:30,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585706039] [2020-09-04 15:22:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:30,231 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,658 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:30,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:22:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:22:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:22:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:30,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585706039] [2020-09-04 15:22:30,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:30,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:22:30,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959517093] [2020-09-04 15:22:30,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:22:30,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:30,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:22:30,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:22:30,865 INFO L87 Difference]: Start difference. First operand 220 states and 237 transitions. Second operand 9 states. [2020-09-04 15:22:31,307 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:31,700 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:22:32,027 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:22:32,344 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:32,651 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:32,970 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:33,992 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:22:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:35,866 INFO L93 Difference]: Finished difference Result 578 states and 668 transitions. [2020-09-04 15:22:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:22:35,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:22:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:35,874 INFO L225 Difference]: With dead ends: 578 [2020-09-04 15:22:35,875 INFO L226 Difference]: Without dead ends: 468 [2020-09-04 15:22:35,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:22:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-09-04 15:22:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 405. [2020-09-04 15:22:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-09-04 15:22:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 454 transitions. [2020-09-04 15:22:36,021 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 454 transitions. Word has length 163 [2020-09-04 15:22:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:36,021 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 454 transitions. [2020-09-04 15:22:36,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:22:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 454 transitions. [2020-09-04 15:22:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 15:22:36,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:36,025 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] [2020-09-04 15:22:36,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:22:36,026 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash 775852866, now seen corresponding path program 1 times [2020-09-04 15:22:36,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:36,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941752366] [2020-09-04 15:22:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:36,030 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,477 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:22:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:22:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:22:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:22:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:22:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:36,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941752366] [2020-09-04 15:22:36,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:36,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:22:36,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892910047] [2020-09-04 15:22:36,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:22:36,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:36,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:22:36,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:22:36,630 INFO L87 Difference]: Start difference. First operand 405 states and 454 transitions. Second operand 9 states. [2020-09-04 15:22:37,168 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:38,932 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:39,262 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:39,624 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:39,997 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:40,276 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:40,577 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:40,874 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:41,646 INFO L93 Difference]: Finished difference Result 1162 states and 1453 transitions. [2020-09-04 15:22:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:22:41,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-04 15:22:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:41,664 INFO L225 Difference]: With dead ends: 1162 [2020-09-04 15:22:41,664 INFO L226 Difference]: Without dead ends: 867 [2020-09-04 15:22:41,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:22:41,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-09-04 15:22:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 679. [2020-09-04 15:22:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-09-04 15:22:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 785 transitions. [2020-09-04 15:22:41,949 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 785 transitions. Word has length 171 [2020-09-04 15:22:41,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:41,949 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 785 transitions. [2020-09-04 15:22:41,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:22:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 785 transitions. [2020-09-04 15:22:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-04 15:22:41,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:41,954 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, 1, 1, 1, 1] [2020-09-04 15:22:41,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:22:41,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:41,955 INFO L82 PathProgramCache]: Analyzing trace with hash 615873622, now seen corresponding path program 1 times [2020-09-04 15:22:41,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:41,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998512756] [2020-09-04 15:22:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:41,958 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,378 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:22:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:22:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:22:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:22:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:22:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:22:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 15:22:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:42,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998512756] [2020-09-04 15:22:42,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:42,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:22:42,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183227991] [2020-09-04 15:22:42,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:22:42,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:42,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:22:42,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:22:42,594 INFO L87 Difference]: Start difference. First operand 679 states and 785 transitions. Second operand 6 states. [2020-09-04 15:22:43,253 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:44,032 INFO L93 Difference]: Finished difference Result 1141 states and 1356 transitions. [2020-09-04 15:22:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 15:22:44,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-04 15:22:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:44,037 INFO L225 Difference]: With dead ends: 1141 [2020-09-04 15:22:44,037 INFO L226 Difference]: Without dead ends: 572 [2020-09-04 15:22:44,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:22:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-09-04 15:22:44,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 542. [2020-09-04 15:22:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-09-04 15:22:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 593 transitions. [2020-09-04 15:22:44,246 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 593 transitions. Word has length 181 [2020-09-04 15:22:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:44,247 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 593 transitions. [2020-09-04 15:22:44,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:22:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 593 transitions. [2020-09-04 15:22:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-04 15:22:44,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:44,251 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] [2020-09-04 15:22:44,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:22:44,251 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1861287888, now seen corresponding path program 1 times [2020-09-04 15:22:44,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:44,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852215407] [2020-09-04 15:22:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:44,256 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:22:44,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:22:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:22:44,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:22:44,653 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:22:44,653 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:22:44,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:22:44,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:22:44 BoogieIcfgContainer [2020-09-04 15:22:44,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:22:44,685 INFO L168 Benchmark]: Toolchain (without parser) took 21253.44 ms. Allocated memory was 137.9 MB in the beginning and 577.8 MB in the end (delta: 439.9 MB). Free memory was 100.2 MB in the beginning and 89.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 450.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:44,686 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:22:44,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.10 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 169.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:44,687 INFO L168 Benchmark]: Boogie Preprocessor took 114.24 ms. Allocated memory is still 200.8 MB. Free memory was 169.1 MB in the beginning and 164.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:44,688 INFO L168 Benchmark]: RCFGBuilder took 1253.02 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 164.8 MB in the beginning and 178.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:44,689 INFO L168 Benchmark]: TraceAbstraction took 19229.73 ms. Allocated memory was 232.3 MB in the beginning and 577.8 MB in the end (delta: 345.5 MB). Free memory was 177.1 MB in the beginning and 89.2 MB in the end (delta: 87.9 MB). Peak memory consumption was 433.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:44,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.10 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 169.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.24 ms. Allocated memory is still 200.8 MB. Free memory was 169.1 MB in the beginning and 164.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1253.02 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 164.8 MB in the beginning and 178.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19229.73 ms. Allocated memory was 232.3 MB in the beginning and 577.8 MB in the end (delta: 345.5 MB). Free memory was 177.1 MB in the beginning and 89.2 MB in the end (delta: 87.9 MB). Peak memory consumption was 433.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L87] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L811] int waterLevel = 1; [L812] int methaneLevelCritical = 0; [L165] int retValue_acc ; [L166] int tmp ; [L170] FCALL select_helpers() [L171] FCALL select_features() [L172] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L172] RET, EXPR valid_product() [L172] tmp = valid_product() [L174] COND TRUE \read(tmp) [L176] FCALL setup() [L177] CALL runTest() [L159] CALL test() [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 [L754] COND TRUE 1 [L756] COND TRUE splverifierCounter < 4 [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) [L766] CALL waterRise() [L829] COND TRUE waterLevel < 2 [L830] waterLevel = waterLevel + 1 [L766] RET waterRise() [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND FALSE !(\read(tmp___0)) [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) [L799] CALL timeShift() [L603] COND FALSE !(\read(pumpRunning)) [L610] COND TRUE \read(systemActive) [L612] CALL processEnvironment() [L632] int tmp ; [L635] COND FALSE !(\read(pumpRunning)) [L650] FCALL processEnvironment__wrappee__base() [L612] RET processEnvironment() [L618] CALL __utac_acc__Specification3_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L560] int tmp___1 ; [L564] CALL, EXPR isMethaneLevelCritical() [L850] int retValue_acc ; [L853] retValue_acc = methaneLevelCritical [L854] return (retValue_acc); [L564] RET, EXPR isMethaneLevelCritical() [L564] tmp = isMethaneLevelCritical() [L566] COND FALSE !(\read(tmp)) [L570] CALL, EXPR getWaterLevel() [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); [L570] RET, EXPR getWaterLevel() [L570] tmp___0 = getWaterLevel() [L572] COND TRUE tmp___0 == 2 [L574] CALL, EXPR isPumpRunning() [L684] int retValue_acc ; [L687] retValue_acc = pumpRunning [L688] return (retValue_acc); [L574] RET, EXPR isPumpRunning() [L574] tmp___1 = isPumpRunning() [L576] COND FALSE !(\read(tmp___1)) [L580] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 596 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1057 SDtfs, 1491 SDslu, 1324 SDs, 0 SdLazy, 2852 SolverSat, 493 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=679occurred 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: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 StatesRemovedByMinimization, 5 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...