/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_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:03:41,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:03:41,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:03:41,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:03:41,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:03:41,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:03:41,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:03:41,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:03:41,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:03:41,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:03:41,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:03:41,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:03:41,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:03:41,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:03:41,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:03:41,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:03:41,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:03:41,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:03:41,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:03:41,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:03:41,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:03:41,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:03:41,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:03:41,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:03:41,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:03:41,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:03:41,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:03:41,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:03:41,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:03:41,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:03:41,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:03:41,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:03:41,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:03:41,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:03:41,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:03:41,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:03:41,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:03:41,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:03:41,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:03:42,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:03:42,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:03:42,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:03:42,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:03:42,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:03:42,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:03:42,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:03:42,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:03:42,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:03:42,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:03:42,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:03:42,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:03:42,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:03:42,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:03:42,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:03:42,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:03:42,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:03:42,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:03:42,023 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:03:42,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:03:42,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:03:42,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:03:42,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:03:42,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:03:42,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:03:42,024 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:03:42,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:03:42,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:03:42,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:03:42,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:03:42,351 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:03:42,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-22 18:03:42,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60565bb0d/2931cf5eeaa34a11a49779f779e17e68/FLAGd3e72ec82 [2020-08-22 18:03:42,874 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:03:42,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-22 18:03:42,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60565bb0d/2931cf5eeaa34a11a49779f779e17e68/FLAGd3e72ec82 [2020-08-22 18:03:43,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60565bb0d/2931cf5eeaa34a11a49779f779e17e68 [2020-08-22 18:03:43,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:03:43,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:03:43,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:43,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:03:43,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:03:43,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43, skipping insertion in model container [2020-08-22 18:03:43,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:03:43,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:03:43,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:43,727 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:03:43,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:43,839 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:03:43,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43 WrapperNode [2020-08-22 18:03:43,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:43,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:03:43,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:03:43,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:03:43,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... [2020-08-22 18:03:43,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:03:43,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:03:43,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:03:43,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:03:43,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:03:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:03:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:03:44,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:44,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:03:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:03:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:03:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:03:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:03:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:03:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:03:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:03:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:03:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:03:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:03:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:03:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:03:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:03:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:03:44,009 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:03:44,009 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:03:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:03:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:03:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:03:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:03:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:03:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:03:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:03:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:03:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:03:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:03:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:03:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:03:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:03:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:03:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:03:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:03:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:03:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:03:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:03:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:03:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:03:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:03:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:03:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:03:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:03:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:03:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:03:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:03:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:03:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:03:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:03:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:03:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:03:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:03:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:03:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:03:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:03:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:03:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:03:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:03:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:03:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:03:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:03:45,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:03:45,099 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:03:45,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:45 BoogieIcfgContainer [2020-08-22 18:03:45,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:03:45,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:03:45,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:03:45,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:03:45,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:03:43" (1/3) ... [2020-08-22 18:03:45,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f96766b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:45, skipping insertion in model container [2020-08-22 18:03:45,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:43" (2/3) ... [2020-08-22 18:03:45,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f96766b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:45, skipping insertion in model container [2020-08-22 18:03:45,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:45" (3/3) ... [2020-08-22 18:03:45,124 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2020-08-22 18:03:45,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:03:45,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:03:45,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:03:45,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:03:45,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:03:45,172 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:03:45,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:03:45,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:03:45,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:03:45,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:03:45,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:03:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states. [2020-08-22 18:03:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:03:45,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:45,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:45,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:45,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:45,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1857034691, now seen corresponding path program 1 times [2020-08-22 18:03:45,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:45,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070518092] [2020-08-22 18:03:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:45,292 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:45,942 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:45,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:03:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:03:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:46,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070518092] [2020-08-22 18:03:46,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:46,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:03:46,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591618579] [2020-08-22 18:03:46,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:03:46,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:46,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:03:46,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:03:46,152 INFO L87 Difference]: Start difference. First operand 279 states. Second operand 3 states. [2020-08-22 18:03:47,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:47,459 INFO L93 Difference]: Finished difference Result 422 states and 505 transitions. [2020-08-22 18:03:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:03:47,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:03:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:47,481 INFO L225 Difference]: With dead ends: 422 [2020-08-22 18:03:47,481 INFO L226 Difference]: Without dead ends: 268 [2020-08-22 18:03:47,487 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 [2020-08-22 18:03:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-22 18:03:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2020-08-22 18:03:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-22 18:03:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2020-08-22 18:03:47,624 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 153 [2020-08-22 18:03:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:47,625 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2020-08-22 18:03:47,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:03:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2020-08-22 18:03:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:03:47,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:47,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:47,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:03:47,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1018336135, now seen corresponding path program 1 times [2020-08-22 18:03:47,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:47,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292285156] [2020-08-22 18:03:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:47,636 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,959 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:03:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:03:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:03:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:48,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292285156] [2020-08-22 18:03:48,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:48,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:03:48,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905529110] [2020-08-22 18:03:48,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:03:48,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:03:48,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:03:48,071 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand 4 states. [2020-08-22 18:03:48,628 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:03:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:49,356 INFO L93 Difference]: Finished difference Result 335 states and 376 transitions. [2020-08-22 18:03:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:03:49,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:03:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:49,361 INFO L225 Difference]: With dead ends: 335 [2020-08-22 18:03:49,362 INFO L226 Difference]: Without dead ends: 251 [2020-08-22 18:03:49,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:03:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-22 18:03:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 218. [2020-08-22 18:03:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 18:03:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 233 transitions. [2020-08-22 18:03:49,427 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 233 transitions. Word has length 154 [2020-08-22 18:03:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:49,427 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 233 transitions. [2020-08-22 18:03:49,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:03:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 233 transitions. [2020-08-22 18:03:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 18:03:49,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:49,431 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] [2020-08-22 18:03:49,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:03:49,432 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1999578566, now seen corresponding path program 1 times [2020-08-22 18:03:49,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:49,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969583397] [2020-08-22 18:03:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:49,436 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,818 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:03:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:03:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:03:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:03:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:49,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969583397] [2020-08-22 18:03:49,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:49,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:03:49,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459455382] [2020-08-22 18:03:49,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:03:49,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:03:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:03:49,981 INFO L87 Difference]: Start difference. First operand 218 states and 233 transitions. Second operand 10 states. [2020-08-22 18:03:50,453 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:50,774 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:03:51,023 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:03:51,274 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:51,552 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:51,787 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:53,110 INFO L93 Difference]: Finished difference Result 381 states and 438 transitions. [2020-08-22 18:03:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:03:53,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-08-22 18:03:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:53,117 INFO L225 Difference]: With dead ends: 381 [2020-08-22 18:03:53,118 INFO L226 Difference]: Without dead ends: 273 [2020-08-22 18:03:53,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 18:03:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-22 18:03:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 218. [2020-08-22 18:03:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 18:03:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 232 transitions. [2020-08-22 18:03:53,202 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 232 transitions. Word has length 167 [2020-08-22 18:03:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:53,203 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 232 transitions. [2020-08-22 18:03:53,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:03:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 232 transitions. [2020-08-22 18:03:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 18:03:53,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:53,206 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] [2020-08-22 18:03:53,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:03:53,206 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2083414273, now seen corresponding path program 1 times [2020-08-22 18:03:53,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:53,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141798033] [2020-08-22 18:03:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:53,210 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,491 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:03:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:03:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 18:03:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 18:03:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 18:03:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:53,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141798033] [2020-08-22 18:03:53,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:53,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:03:53,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849015374] [2020-08-22 18:03:53,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:03:53,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:03:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:03:53,658 INFO L87 Difference]: Start difference. First operand 218 states and 232 transitions. Second operand 10 states. [2020-08-22 18:03:54,370 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:56,271 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:56,592 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:56,857 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:57,121 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:57,399 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:57,814 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:58,116 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:58,662 INFO L93 Difference]: Finished difference Result 592 states and 734 transitions. [2020-08-22 18:03:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 18:03:58,663 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-08-22 18:03:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:58,668 INFO L225 Difference]: With dead ends: 592 [2020-08-22 18:03:58,668 INFO L226 Difference]: Without dead ends: 484 [2020-08-22 18:03:58,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-08-22 18:03:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-22 18:03:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 318. [2020-08-22 18:03:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-22 18:03:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 349 transitions. [2020-08-22 18:03:58,836 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 349 transitions. Word has length 175 [2020-08-22 18:03:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:58,838 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 349 transitions. [2020-08-22 18:03:58,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:03:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 349 transitions. [2020-08-22 18:03:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-22 18:03:58,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:58,841 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, 1, 1, 1, 1] [2020-08-22 18:03:58,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:03:58,842 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:58,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1543776953, now seen corresponding path program 1 times [2020-08-22 18:03:58,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:58,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831319067] [2020-08-22 18:03:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:58,846 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,125 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:03:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:03:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:03:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:03:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:03:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 18:03:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 18:03:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 18:03:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:59,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831319067] [2020-08-22 18:03:59,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:59,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 18:03:59,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290110756] [2020-08-22 18:03:59,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 18:03:59,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:59,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 18:03:59,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:03:59,350 INFO L87 Difference]: Start difference. First operand 318 states and 349 transitions. Second operand 7 states. [2020-08-22 18:03:59,794 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:00,606 INFO L93 Difference]: Finished difference Result 540 states and 628 transitions. [2020-08-22 18:04:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:04:00,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-08-22 18:04:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:00,609 INFO L225 Difference]: With dead ends: 540 [2020-08-22 18:04:00,609 INFO L226 Difference]: Without dead ends: 332 [2020-08-22 18:04:00,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:04:00,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-22 18:04:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 266. [2020-08-22 18:04:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-08-22 18:04:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 281 transitions. [2020-08-22 18:04:00,687 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 281 transitions. Word has length 185 [2020-08-22 18:04:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:00,688 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 281 transitions. [2020-08-22 18:04:00,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 18:04:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 281 transitions. [2020-08-22 18:04:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-22 18:04:00,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:00,691 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] [2020-08-22 18:04:00,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:04:00,691 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1398687596, now seen corresponding path program 1 times [2020-08-22 18:04:00,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:00,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374331180] [2020-08-22 18:04:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:00,694 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:00,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:00,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:00,985 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:04:00,985 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:04:00,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:04:01,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:04:01 BoogieIcfgContainer [2020-08-22 18:04:01,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:04:01,011 INFO L168 Benchmark]: Toolchain (without parser) took 17750.09 ms. Allocated memory was 146.8 MB in the beginning and 548.4 MB in the end (delta: 401.6 MB). Free memory was 102.9 MB in the beginning and 321.9 MB in the end (delta: -219.0 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:01,011 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:04:01,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.44 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 171.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:01,013 INFO L168 Benchmark]: Boogie Preprocessor took 87.03 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:01,014 INFO L168 Benchmark]: RCFGBuilder took 1182.72 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 167.1 MB in the beginning and 177.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:01,015 INFO L168 Benchmark]: TraceAbstraction took 15895.03 ms. Allocated memory was 235.9 MB in the beginning and 548.4 MB in the end (delta: 312.5 MB). Free memory was 175.9 MB in the beginning and 321.9 MB in the end (delta: -146.0 MB). Peak memory consumption was 166.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:01,018 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 578.44 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 171.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.03 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1182.72 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 167.1 MB in the beginning and 177.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15895.03 ms. Allocated memory was 235.9 MB in the beginning and 548.4 MB in the end (delta: 312.5 MB). Free memory was 175.9 MB in the beginning and 321.9 MB in the end (delta: -146.0 MB). Peak memory consumption was 166.4 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: [L96] int pumpRunning = 0; [L97] int systemActive = 1; [L309] int waterLevel = 1; [L310] int methaneLevelCritical = 0; [L389] int cleanupTimeShifts = 4; [L654] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int retValue_acc ; [L463] int tmp ; [L467] FCALL select_helpers() [L468] FCALL select_features() [L469] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L469] RET, EXPR valid_product() [L469] tmp = valid_product() [L471] COND TRUE \read(tmp) [L473] FCALL setup() [L474] CALL runTest() [L456] CALL test() [L242] int splverifierCounter ; [L243] int tmp ; [L244] int tmp___0 ; [L245] int tmp___1 ; [L246] int tmp___2 ; [L249] splverifierCounter = 0 [L251] COND TRUE 1 [L253] COND TRUE splverifierCounter < 4 [L259] tmp = __VERIFIER_nondet_int() [L261] COND TRUE \read(tmp) [L263] CALL waterRise() [L327] COND TRUE waterLevel < 2 [L328] waterLevel = waterLevel + 1 [L263] RET waterRise() [L269] tmp___0 = __VERIFIER_nondet_int() [L271] COND FALSE !(\read(tmp___0)) [L279] tmp___2 = __VERIFIER_nondet_int() [L281] COND TRUE \read(tmp___2) [L283] CALL startSystem() [L233] systemActive = 1 [L283] RET startSystem() [L296] CALL timeShift() [L104] COND FALSE !(\read(pumpRunning)) [L111] COND TRUE \read(systemActive) [L113] CALL processEnvironment() [L133] int tmp ; [L136] COND FALSE !(\read(pumpRunning)) [L151] FCALL processEnvironment__wrappee__base() [L113] RET processEnvironment() [L119] CALL __utac_acc__Specification3_spec__1() [L852] int tmp ; [L853] int tmp___0 ; [L854] int tmp___1 ; [L858] CALL, EXPR isMethaneLevelCritical() [L348] int retValue_acc ; [L351] retValue_acc = methaneLevelCritical [L352] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND FALSE !(\read(tmp)) [L864] CALL, EXPR getWaterLevel() [L380] int retValue_acc ; [L383] retValue_acc = waterLevel [L384] return (retValue_acc); [L864] RET, EXPR getWaterLevel() [L864] tmp___0 = getWaterLevel() [L866] COND TRUE tmp___0 == 2 [L868] CALL, EXPR isPumpRunning() [L185] int retValue_acc ; [L188] retValue_acc = pumpRunning [L189] return (retValue_acc); [L868] RET, EXPR isPumpRunning() [L868] tmp___1 = isPumpRunning() [L870] COND FALSE !(\read(tmp___1)) [L874] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 594 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1022 SDtfs, 1693 SDslu, 1478 SDs, 0 SdLazy, 2611 SolverSat, 497 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred 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: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 360 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...