/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:22:32,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:22:32,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:22:32,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:22:32,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:22:32,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:22:32,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:22:32,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:22:32,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:22:32,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:22:32,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:22:32,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:22:32,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:22:32,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:22:32,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:22:32,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:22:32,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:22:32,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:22:32,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:22:32,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:22:32,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:22:32,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:22:32,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:22:32,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:22:32,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:22:32,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:22:32,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:22:32,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:22:32,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:22:32,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:22:32,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:22:32,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:22:32,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:22:32,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:22:32,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:22:32,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:22:32,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:22:32,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:22:32,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:22:32,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:22:32,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:22:32,740 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 15:22:32,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:22:32,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:22:32,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:22:32,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:22:32,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:22:32,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:22:32,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:22:32,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:22:32,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:22:32,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:22:32,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:22:32,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:22:32,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:22:32,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:22:32,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:22:32,755 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:22:32,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:22:32,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:22:32,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:22:32,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:22:32,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:22:32,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:22:32,757 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:22:33,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:22:33,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:22:33,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:22:33,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:22:33,210 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:22:33,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-09-04 15:22:33,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef83f0d2b/865cda510f3c4679ae010cb0e5307d3a/FLAGb1db1dee8 [2020-09-04 15:22:33,959 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:22:33,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-09-04 15:22:33,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef83f0d2b/865cda510f3c4679ae010cb0e5307d3a/FLAGb1db1dee8 [2020-09-04 15:22:34,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef83f0d2b/865cda510f3c4679ae010cb0e5307d3a [2020-09-04 15:22:34,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:22:34,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:22:34,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:22:34,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:22:34,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:22:34,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84c84f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34, skipping insertion in model container [2020-09-04 15:22:34,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:22:34,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:22:34,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:22:34,759 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:22:34,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:22:34,877 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:22:34,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34 WrapperNode [2020-09-04 15:22:34,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:22:34,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:22:34,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:22:34,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:22:34,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (1/1) ... [2020-09-04 15:22:34,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:22:34,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:22:34,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:22:34,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:22:34,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (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 15:22:35,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:22:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:22:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:22:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:22:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:22:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:22:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:22:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:22:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:22:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:22:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:22:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:22:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-09-04 15:22:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:22:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:22:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:22:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:22:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:22:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:22:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:22:35,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:22:35,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:22:35,071 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:22:35,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:22:35,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:22:35,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:22:35,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:22:35,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:22:35,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:22:35,072 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:22:35,072 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:22:35,072 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:22:35,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:22:35,076 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:22:35,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:22:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:22:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:22:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:22:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:22:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:22:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:22:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:22:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:22:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:22:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:22:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:22:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:22:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:22:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:22:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:22:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:22:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:22:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:22:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:22:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:22:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:22:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:22:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:22:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:22:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:22:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-09-04 15:22:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:22:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:22:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:22:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:22:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:22:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:22:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:22:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:22:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:22:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:22:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:22:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:22:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:22:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:22:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:22:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:22:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:22:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:22:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:22:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:22:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:22:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:22:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:22:36,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:22:36,215 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:22:36,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:22:36 BoogieIcfgContainer [2020-09-04 15:22:36,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:22:36,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:22:36,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:22:36,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:22:36,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:22:34" (1/3) ... [2020-09-04 15:22:36,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ede1bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:22:36, skipping insertion in model container [2020-09-04 15:22:36,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:34" (2/3) ... [2020-09-04 15:22:36,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ede1bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:22:36, skipping insertion in model container [2020-09-04 15:22:36,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:22:36" (3/3) ... [2020-09-04 15:22:36,240 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product09.cil.c [2020-09-04 15:22:36,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:22:36,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:22:36,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:22:36,320 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:22:36,320 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:22:36,320 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:22:36,320 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:22:36,321 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:22:36,321 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:22:36,321 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:22:36,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:22:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states. [2020-09-04 15:22:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:22:36,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:36,389 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 15:22:36,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:36,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:36,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2059425041, now seen corresponding path program 1 times [2020-09-04 15:22:36,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:36,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410298666] [2020-09-04 15:22:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:36,497 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,234 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:37,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:22:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:22:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:22:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:37,422 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 15:22:37,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410298666] [2020-09-04 15:22:37,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:37,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:22:37,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046949868] [2020-09-04 15:22:37,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:22:37,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:37,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:22:37,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:22:37,455 INFO L87 Difference]: Start difference. First operand 268 states. Second operand 3 states. [2020-09-04 15:22:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:38,653 INFO L93 Difference]: Finished difference Result 365 states and 438 transitions. [2020-09-04 15:22:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:22:38,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:22:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:38,685 INFO L225 Difference]: With dead ends: 365 [2020-09-04 15:22:38,685 INFO L226 Difference]: Without dead ends: 238 [2020-09-04 15:22:38,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:22:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-04 15:22:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 201. [2020-09-04 15:22:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-04 15:22:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 215 transitions. [2020-09-04 15:22:38,863 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 215 transitions. Word has length 153 [2020-09-04 15:22:38,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:38,867 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 215 transitions. [2020-09-04 15:22:38,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:22:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 215 transitions. [2020-09-04 15:22:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:22:38,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:38,880 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 15:22:38,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:22:38,880 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:38,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:38,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1720620052, now seen corresponding path program 1 times [2020-09-04 15:22:38,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:38,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658591217] [2020-09-04 15:22:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:38,884 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,379 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:39,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:22:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:22:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:22:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:39,472 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 15:22:39,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658591217] [2020-09-04 15:22:39,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:39,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:22:39,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291408712] [2020-09-04 15:22:39,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:22:39,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:39,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:22:39,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:22:39,476 INFO L87 Difference]: Start difference. First operand 201 states and 215 transitions. Second operand 4 states. [2020-09-04 15:22:40,141 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:22:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:40,708 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2020-09-04 15:22:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:22:40,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:22:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:40,713 INFO L225 Difference]: With dead ends: 282 [2020-09-04 15:22:40,713 INFO L226 Difference]: Without dead ends: 221 [2020-09-04 15:22:40,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:22:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-04 15:22:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-09-04 15:22:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-04 15:22:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2020-09-04 15:22:40,781 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 154 [2020-09-04 15:22:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:40,782 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2020-09-04 15:22:40,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:22:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2020-09-04 15:22:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:22:40,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:40,784 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 15:22:40,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:22:40,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:40,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2141035662, now seen corresponding path program 1 times [2020-09-04 15:22:40,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:40,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106227492] [2020-09-04 15:22:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:40,789 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,145 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:41,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:22:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:22:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:22:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:41,361 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 15:22:41,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106227492] [2020-09-04 15:22:41,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:41,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:22:41,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848695261] [2020-09-04 15:22:41,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:22:41,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:22:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:22:41,364 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand 9 states. [2020-09-04 15:22:41,840 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:42,219 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:22:42,541 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:22:42,865 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:43,174 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:43,491 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:44,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:44,506 INFO L93 Difference]: Finished difference Result 302 states and 338 transitions. [2020-09-04 15:22:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:22:44,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:22:44,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:44,509 INFO L225 Difference]: With dead ends: 302 [2020-09-04 15:22:44,510 INFO L226 Difference]: Without dead ends: 221 [2020-09-04 15:22:44,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:22:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-04 15:22:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-09-04 15:22:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-04 15:22:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2020-09-04 15:22:44,565 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 163 [2020-09-04 15:22:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:44,566 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2020-09-04 15:22:44,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:22:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2020-09-04 15:22:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:22:44,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:44,568 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] [2020-09-04 15:22:44,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:22:44,569 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1523328368, now seen corresponding path program 1 times [2020-09-04 15:22:44,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:44,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729972142] [2020-09-04 15:22:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:44,573 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,046 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:22:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:22:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:22:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:22:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:45,256 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 15:22:45,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729972142] [2020-09-04 15:22:45,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:45,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:22:45,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218202182] [2020-09-04 15:22:45,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:22:45,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:45,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:22:45,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:22:45,260 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand 8 states. [2020-09-04 15:22:45,862 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:47,192 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:47,520 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:47,863 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:48,202 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:48,484 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:48,803 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:49,095 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:49,400 INFO L93 Difference]: Finished difference Result 368 states and 417 transitions. [2020-09-04 15:22:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:22:49,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-04 15:22:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:49,422 INFO L225 Difference]: With dead ends: 368 [2020-09-04 15:22:49,423 INFO L226 Difference]: Without dead ends: 287 [2020-09-04 15:22:49,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:22:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-04 15:22:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 262. [2020-09-04 15:22:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-04 15:22:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-09-04 15:22:49,502 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 166 [2020-09-04 15:22:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:49,503 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-09-04 15:22:49,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:22:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-09-04 15:22:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 15:22:49,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:49,506 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 15:22:49,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:22:49,506 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1767718716, now seen corresponding path program 1 times [2020-09-04 15:22:49,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:49,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413468633] [2020-09-04 15:22:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:49,510 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,841 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:22:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:22:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:22:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:22:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:22:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:49,987 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 15:22:49,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413468633] [2020-09-04 15:22:49,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:49,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:22:49,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640085063] [2020-09-04 15:22:49,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:22:49,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:49,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:22:49,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:22:49,990 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 5 states. [2020-09-04 15:22:50,461 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:51,064 INFO L93 Difference]: Finished difference Result 361 states and 402 transitions. [2020-09-04 15:22:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:22:51,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-04 15:22:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:51,068 INFO L225 Difference]: With dead ends: 361 [2020-09-04 15:22:51,069 INFO L226 Difference]: Without dead ends: 269 [2020-09-04 15:22:51,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:22:51,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-04 15:22:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2020-09-04 15:22:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 15:22:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 263 transitions. [2020-09-04 15:22:51,132 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 263 transitions. Word has length 171 [2020-09-04 15:22:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:51,133 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 263 transitions. [2020-09-04 15:22:51,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:22:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 263 transitions. [2020-09-04 15:22:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 15:22:51,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:51,136 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 15:22:51,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:22:51,136 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:51,137 INFO L82 PathProgramCache]: Analyzing trace with hash -645930008, now seen corresponding path program 1 times [2020-09-04 15:22:51,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:51,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718746875] [2020-09-04 15:22:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:51,139 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:22:51,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:22:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:22:51,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:22:51,551 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:22:51,551 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:22:51,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:22:51,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:22:51 BoogieIcfgContainer [2020-09-04 15:22:51,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:22:51,583 INFO L168 Benchmark]: Toolchain (without parser) took 17395.45 ms. Allocated memory was 146.8 MB in the beginning and 502.8 MB in the end (delta: 356.0 MB). Free memory was 103.5 MB in the beginning and 282.0 MB in the end (delta: -178.4 MB). Peak memory consumption was 177.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:51,584 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:22:51,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.16 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 103.3 MB in the beginning and 174.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:51,586 INFO L168 Benchmark]: Boogie Preprocessor took 101.71 ms. Allocated memory is still 205.0 MB. Free memory was 174.2 MB in the beginning and 170.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:51,587 INFO L168 Benchmark]: RCFGBuilder took 1247.40 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 170.1 MB in the beginning and 182.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:51,587 INFO L168 Benchmark]: TraceAbstraction took 15351.08 ms. Allocated memory was 237.0 MB in the beginning and 502.8 MB in the end (delta: 265.8 MB). Free memory was 180.7 MB in the beginning and 282.0 MB in the end (delta: -101.2 MB). Peak memory consumption was 164.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:51,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.16 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 103.3 MB in the beginning and 174.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.71 ms. Allocated memory is still 205.0 MB. Free memory was 174.2 MB in the beginning and 170.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1247.40 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 170.1 MB in the beginning and 182.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15351.08 ms. Allocated memory was 237.0 MB in the beginning and 502.8 MB in the end (delta: 265.8 MB). Free memory was 180.7 MB in the beginning and 282.0 MB in the end (delta: -101.2 MB). Peak memory consumption was 164.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 148]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L224] int pumpRunning = 0; [L225] int systemActive = 1; [L589] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L786] int waterLevel = 1; [L787] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L411] int retValue_acc ; [L414] retValue_acc = 1 [L415] 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() [L154] int splverifierCounter ; [L155] int tmp ; [L156] int tmp___0 ; [L157] int tmp___1 ; [L158] int tmp___2 ; [L161] splverifierCounter = 0 [L163] COND TRUE 1 [L165] COND TRUE splverifierCounter < 4 [L171] tmp = __VERIFIER_nondet_int() [L173] COND TRUE \read(tmp) [L175] CALL waterRise() [L804] COND TRUE waterLevel < 2 [L805] waterLevel = waterLevel + 1 [L175] RET waterRise() [L181] tmp___0 = __VERIFIER_nondet_int() [L183] COND FALSE !(\read(tmp___0)) [L191] tmp___2 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___2) [L206] CALL timeShift() [L232] COND FALSE !(\read(pumpRunning)) [L239] COND TRUE \read(systemActive) [L241] FCALL processEnvironment() [L247] CALL __utac_acc__Specification3_spec__1() [L352] int tmp ; [L353] int tmp___0 ; [L354] int tmp___1 ; [L358] CALL, EXPR isMethaneLevelCritical() [L825] int retValue_acc ; [L828] retValue_acc = methaneLevelCritical [L829] return (retValue_acc); [L358] RET, EXPR isMethaneLevelCritical() [L358] tmp = isMethaneLevelCritical() [L360] COND FALSE !(\read(tmp)) [L364] CALL, EXPR getWaterLevel() [L857] int retValue_acc ; [L860] retValue_acc = waterLevel [L861] return (retValue_acc); [L364] RET, EXPR getWaterLevel() [L364] tmp___0 = getWaterLevel() [L366] COND TRUE tmp___0 == 2 [L368] CALL, EXPR isPumpRunning() [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L368] RET, EXPR isPumpRunning() [L368] tmp___1 = isPumpRunning() [L370] COND FALSE !(\read(tmp___1)) [L374] CALL __automaton_fail() [L148] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 587 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 909 SDtfs, 958 SDslu, 1147 SDs, 0 SdLazy, 1888 SolverSat, 279 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 143 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...