/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:01:34,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:01:34,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:01:34,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:01:34,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:01:34,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:01:34,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:01:34,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:01:34,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:01:34,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:01:34,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:01:34,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:01:34,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:01:34,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:01:34,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:01:34,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:01:34,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:01:34,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:01:34,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:01:34,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:01:34,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:01:34,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:01:34,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:01:34,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:01:34,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:01:34,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:01:34,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:01:34,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:01:34,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:01:34,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:01:34,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:01:34,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:01:34,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:01:34,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:01:34,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:01:34,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:01:34,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:01:34,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:01:34,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:01:34,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:01:34,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:01:34,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:01:34,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:01:34,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:01:34,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:01:34,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:01:34,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:01:34,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:01:34,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:01:34,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:01:34,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:01:34,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:01:34,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:01:34,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:01:34,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:01:34,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:01:34,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:01:34,934 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:01:34,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:01:34,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:01:34,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:01:34,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:01:34,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:01:34,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:01:34,935 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:01:35,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:01:35,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:01:35,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:01:35,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:01:35,393 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:01:35,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-11-07 00:01:35,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b03d2b83/076d04439e13426882d56165f952fba9/FLAG4e5d2721c [2020-11-07 00:01:36,223 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:01:36,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-11-07 00:01:36,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b03d2b83/076d04439e13426882d56165f952fba9/FLAG4e5d2721c [2020-11-07 00:01:36,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b03d2b83/076d04439e13426882d56165f952fba9 [2020-11-07 00:01:36,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:01:36,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:01:36,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:01:36,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:01:36,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:01:36,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:36" (1/1) ... [2020-11-07 00:01:36,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b17e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:36, skipping insertion in model container [2020-11-07 00:01:36,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:36" (1/1) ... [2020-11-07 00:01:36,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:01:36,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:01:36,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:01:36,909 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:01:37,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:01:37,079 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:01:37,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37 WrapperNode [2020-11-07 00:01:37,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:01:37,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:01:37,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:01:37,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:01:37,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (1/1) ... [2020-11-07 00:01:37,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (1/1) ... [2020-11-07 00:01:37,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (1/1) ... [2020-11-07 00:01:37,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (1/1) ... [2020-11-07 00:01:37,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (1/1) ... [2020-11-07 00:01:37,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (1/1) ... [2020-11-07 00:01:37,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (1/1) ... [2020-11-07 00:01:37,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:01:37,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:01:37,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:01:37,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:01:37,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (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 [2020-11-07 00:01:37,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:01:37,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:01:37,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-07 00:01:37,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:01:37,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:01:37,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-07 00:01:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-07 00:01:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-07 00:01:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-07 00:01:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-07 00:01:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-07 00:01:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-07 00:01:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-07 00:01:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-07 00:01:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-07 00:01:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-07 00:01:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-07 00:01:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-07 00:01:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-07 00:01:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-07 00:01:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-07 00:01:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-07 00:01:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-07 00:01:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-07 00:01:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-07 00:01:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-07 00:01:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-07 00:01:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:01:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-07 00:01:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-07 00:01:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-07 00:01:37,327 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-11-07 00:01:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-07 00:01:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-07 00:01:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-07 00:01:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-07 00:01:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-07 00:01:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-07 00:01:37,329 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-07 00:01:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:01:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:01:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:01:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:01:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:01:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-07 00:01:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-07 00:01:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-07 00:01:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-07 00:01:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-07 00:01:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:01:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:01:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:01:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-07 00:01:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:01:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:01:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:01:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:01:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-07 00:01:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:01:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-07 00:01:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-07 00:01:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:01:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-07 00:01:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-07 00:01:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-07 00:01:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-07 00:01:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-07 00:01:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-07 00:01:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-07 00:01:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-07 00:01:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-07 00:01:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-07 00:01:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-07 00:01:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-07 00:01:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-07 00:01:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-07 00:01:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-07 00:01:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-07 00:01:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-07 00:01:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-07 00:01:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-07 00:01:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:01:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-07 00:01:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-07 00:01:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-07 00:01:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-07 00:01:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-07 00:01:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-11-07 00:01:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-07 00:01:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:01:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:01:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:01:38,776 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:01:38,776 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 00:01:38,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:38 BoogieIcfgContainer [2020-11-07 00:01:38,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:01:38,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:01:38,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:01:38,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:01:38,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:01:36" (1/3) ... [2020-11-07 00:01:38,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718fae47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:38, skipping insertion in model container [2020-11-07 00:01:38,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:37" (2/3) ... [2020-11-07 00:01:38,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718fae47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:38, skipping insertion in model container [2020-11-07 00:01:38,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:38" (3/3) ... [2020-11-07 00:01:38,789 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2020-11-07 00:01:38,806 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:01:38,811 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-07 00:01:38,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-07 00:01:38,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:01:38,852 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:01:38,852 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:01:38,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:01:38,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:01:38,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:01:38,853 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:01:38,853 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:01:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-11-07 00:01:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-11-07 00:01:38,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:38,900 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] [2020-11-07 00:01:38,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:38,907 INFO L82 PathProgramCache]: Analyzing trace with hash 737661165, now seen corresponding path program 1 times [2020-11-07 00:01:38,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:38,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922379252] [2020-11-07 00:01:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:39,003 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,754 WARN L194 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-07 00:01:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:01:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-07 00:01:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:39,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922379252] [2020-11-07 00:01:39,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:39,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:01:39,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544184152] [2020-11-07 00:01:39,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:01:39,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:39,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:01:39,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:01:39,940 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2020-11-07 00:01:41,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:41,451 INFO L93 Difference]: Finished difference Result 445 states and 528 transitions. [2020-11-07 00:01:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:01:41,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-11-07 00:01:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:41,469 INFO L225 Difference]: With dead ends: 445 [2020-11-07 00:01:41,469 INFO L226 Difference]: Without dead ends: 280 [2020-11-07 00:01:41,474 INFO L677 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 [2020-11-07 00:01:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-07 00:01:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 241. [2020-11-07 00:01:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-07 00:01:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 259 transitions. [2020-11-07 00:01:41,646 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 259 transitions. Word has length 159 [2020-11-07 00:01:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:41,648 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 259 transitions. [2020-11-07 00:01:41,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:01:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 259 transitions. [2020-11-07 00:01:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-07 00:01:41,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:41,653 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] [2020-11-07 00:01:41,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:01:41,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:41,655 INFO L82 PathProgramCache]: Analyzing trace with hash -101000119, now seen corresponding path program 1 times [2020-11-07 00:01:41,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:41,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83224993] [2020-11-07 00:01:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:41,660 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,227 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 00:01:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 00:01:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 00:01:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:42,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83224993] [2020-11-07 00:01:42,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:42,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:01:42,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060452028] [2020-11-07 00:01:42,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:01:42,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:42,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:01:42,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:01:42,338 INFO L87 Difference]: Start difference. First operand 241 states and 259 transitions. Second operand 4 states. [2020-11-07 00:01:43,222 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-07 00:01:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:44,275 INFO L93 Difference]: Finished difference Result 359 states and 399 transitions. [2020-11-07 00:01:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:01:44,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-11-07 00:01:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:44,280 INFO L225 Difference]: With dead ends: 359 [2020-11-07 00:01:44,280 INFO L226 Difference]: Without dead ends: 263 [2020-11-07 00:01:44,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:01:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-07 00:01:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 231. [2020-11-07 00:01:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-11-07 00:01:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 246 transitions. [2020-11-07 00:01:44,374 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 246 transitions. Word has length 160 [2020-11-07 00:01:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:44,375 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 246 transitions. [2020-11-07 00:01:44,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:01:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 246 transitions. [2020-11-07 00:01:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-11-07 00:01:44,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:44,378 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] [2020-11-07 00:01:44,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:01:44,378 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:44,379 INFO L82 PathProgramCache]: Analyzing trace with hash -289670422, now seen corresponding path program 1 times [2020-11-07 00:01:44,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:44,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929661397] [2020-11-07 00:01:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:44,383 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:44,873 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:44,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:45,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:45,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:01:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-07 00:01:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-11-07 00:01:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:45,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929661397] [2020-11-07 00:01:45,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:45,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 00:01:45,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105366881] [2020-11-07 00:01:45,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 00:01:45,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 00:01:45,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:01:45,092 INFO L87 Difference]: Start difference. First operand 231 states and 246 transitions. Second operand 9 states. [2020-11-07 00:01:45,801 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:46,305 WARN L194 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-07 00:01:46,711 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-07 00:01:47,138 WARN L194 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:47,544 WARN L194 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:47,933 WARN L194 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:49,640 INFO L93 Difference]: Finished difference Result 379 states and 424 transitions. [2020-11-07 00:01:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:01:49,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-11-07 00:01:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:49,645 INFO L225 Difference]: With dead ends: 379 [2020-11-07 00:01:49,645 INFO L226 Difference]: Without dead ends: 263 [2020-11-07 00:01:49,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-07 00:01:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-07 00:01:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 231. [2020-11-07 00:01:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-11-07 00:01:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 245 transitions. [2020-11-07 00:01:49,758 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 245 transitions. Word has length 169 [2020-11-07 00:01:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:49,759 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 245 transitions. [2020-11-07 00:01:49,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 00:01:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 245 transitions. [2020-11-07 00:01:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-07 00:01:49,761 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:49,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:01:49,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:01:49,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:49,763 INFO L82 PathProgramCache]: Analyzing trace with hash 432001603, now seen corresponding path program 1 times [2020-11-07 00:01:49,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:49,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413776380] [2020-11-07 00:01:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:49,767 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,233 WARN L194 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-07 00:01:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-11-07 00:01:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-07 00:01:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-11-07 00:01:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:50,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413776380] [2020-11-07 00:01:50,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:50,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 00:01:50,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207500644] [2020-11-07 00:01:50,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 00:01:50,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:50,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 00:01:50,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:01:50,505 INFO L87 Difference]: Start difference. First operand 231 states and 245 transitions. Second operand 9 states. [2020-11-07 00:01:51,170 WARN L194 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:53,119 WARN L194 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:53,563 WARN L194 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:54,036 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:54,599 WARN L194 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:54,955 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:55,309 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:55,728 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:56,480 INFO L93 Difference]: Finished difference Result 529 states and 620 transitions. [2020-11-07 00:01:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 00:01:56,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2020-11-07 00:01:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:56,491 INFO L225 Difference]: With dead ends: 529 [2020-11-07 00:01:56,492 INFO L226 Difference]: Without dead ends: 413 [2020-11-07 00:01:56,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 00:01:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-11-07 00:01:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 338. [2020-11-07 00:01:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-11-07 00:01:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 369 transitions. [2020-11-07 00:01:56,684 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 369 transitions. Word has length 177 [2020-11-07 00:01:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:56,685 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 369 transitions. [2020-11-07 00:01:56,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 00:01:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 369 transitions. [2020-11-07 00:01:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-07 00:01:56,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:56,688 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, 1, 1] [2020-11-07 00:01:56,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:01:56,693 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash 590025749, now seen corresponding path program 1 times [2020-11-07 00:01:56,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:56,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680302526] [2020-11-07 00:01:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:56,698 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,090 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-11-07 00:01:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:01:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 00:01:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-07 00:01:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-11-07 00:01:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-11-07 00:01:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:57,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680302526] [2020-11-07 00:01:57,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:57,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:01:57,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788385374] [2020-11-07 00:01:57,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:01:57,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:01:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:01:57,230 INFO L87 Difference]: Start difference. First operand 338 states and 369 transitions. Second operand 6 states. [2020-11-07 00:01:57,880 WARN L194 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:58,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:58,667 INFO L93 Difference]: Finished difference Result 508 states and 574 transitions. [2020-11-07 00:01:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 00:01:58,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-11-07 00:01:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:58,670 INFO L225 Difference]: With dead ends: 508 [2020-11-07 00:01:58,670 INFO L226 Difference]: Without dead ends: 285 [2020-11-07 00:01:58,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:01:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-11-07 00:01:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 264. [2020-11-07 00:01:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-11-07 00:01:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 279 transitions. [2020-11-07 00:01:58,776 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 279 transitions. Word has length 187 [2020-11-07 00:01:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:58,776 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 279 transitions. [2020-11-07 00:01:58,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:01:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 279 transitions. [2020-11-07 00:01:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-11-07 00:01:58,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:58,780 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] [2020-11-07 00:01:58,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:01:58,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:58,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:58,781 INFO L82 PathProgramCache]: Analyzing trace with hash -398365457, now seen corresponding path program 1 times [2020-11-07 00:01:58,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:58,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231732770] [2020-11-07 00:01:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:58,786 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:01:58,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:01:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:01:58,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:01:59,236 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:01:59,236 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:01:59,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:01:59,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:01:59 BoogieIcfgContainer [2020-11-07 00:01:59,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:01:59,286 INFO L168 Benchmark]: Toolchain (without parser) took 22810.56 ms. Allocated memory was 164.6 MB in the beginning and 450.9 MB in the end (delta: 286.3 MB). Free memory was 139.2 MB in the beginning and 169.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 256.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:59,287 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 164.6 MB. Free memory was 139.8 MB in the beginning and 139.7 MB in the end (delta: 92.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:01:59,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.83 ms. Allocated memory is still 164.6 MB. Free memory was 138.4 MB in the beginning and 117.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:59,296 INFO L168 Benchmark]: Boogie Preprocessor took 154.82 ms. Allocated memory is still 164.6 MB. Free memory was 117.3 MB in the beginning and 113.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:59,297 INFO L168 Benchmark]: RCFGBuilder took 1542.86 ms. Allocated memory was 164.6 MB in the beginning and 216.0 MB in the end (delta: 51.4 MB). Free memory was 113.3 MB in the beginning and 177.2 MB in the end (delta: -63.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:59,299 INFO L168 Benchmark]: TraceAbstraction took 20499.95 ms. Allocated memory was 216.0 MB in the beginning and 450.9 MB in the end (delta: 234.9 MB). Free memory was 176.7 MB in the beginning and 169.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 241.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:59,311 INFO L339 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 164.6 MB. Free memory was 139.8 MB in the beginning and 139.7 MB in the end (delta: 92.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 600.83 ms. Allocated memory is still 164.6 MB. Free memory was 138.4 MB in the beginning and 117.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 154.82 ms. Allocated memory is still 164.6 MB. Free memory was 117.3 MB in the beginning and 113.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1542.86 ms. Allocated memory was 164.6 MB in the beginning and 216.0 MB in the end (delta: 51.4 MB). Free memory was 113.3 MB in the beginning and 177.2 MB in the end (delta: -63.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20499.95 ms. Allocated memory was 216.0 MB in the beginning and 450.9 MB in the end (delta: 234.9 MB). Free memory was 176.7 MB in the beginning and 169.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 241.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L258] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L460] int waterLevel = 1; [L461] int methaneLevelCritical = 0; [L587] int cleanupTimeShifts = 4; [L688] int pumpRunning = 0; [L689] int systemActive = 1; [L663] int retValue_acc ; [L664] int tmp ; [L668] FCALL select_helpers() [L669] FCALL select_features() [L670] CALL, EXPR valid_product() [L578] int retValue_acc ; [L581] retValue_acc = 1 [L582] return (retValue_acc); [L670] RET, EXPR valid_product() [L670] tmp = valid_product() [L672] COND TRUE \read(tmp) [L674] FCALL setup() [L675] CALL runTest() [L657] CALL test() [L859] int splverifierCounter ; [L860] int tmp ; [L861] int tmp___0 ; [L862] int tmp___1 ; [L863] int tmp___2 ; [L866] splverifierCounter = 0 [L868] COND TRUE 1 [L870] COND TRUE splverifierCounter < 4 [L876] tmp = __VERIFIER_nondet_int() [L878] COND TRUE \read(tmp) [L880] CALL waterRise() [L478] COND TRUE waterLevel < 2 [L479] waterLevel = waterLevel + 1 [L880] RET waterRise() [L886] tmp___0 = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp___0)) [L896] tmp___2 = __VERIFIER_nondet_int() [L898] COND TRUE \read(tmp___2) [L911] CALL timeShift() [L695] COND FALSE !(\read(pumpRunning)) [L702] COND TRUE \read(systemActive) [L704] CALL processEnvironment() [L724] int tmp ; [L727] COND FALSE !(\read(pumpRunning)) [L742] FCALL processEnvironment__wrappee__base() [L704] RET processEnvironment() [L710] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L499] int retValue_acc ; [L502] retValue_acc = methaneLevelCritical [L503] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L531] int retValue_acc ; [L534] retValue_acc = waterLevel [L535] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L794] int retValue_acc ; [L797] retValue_acc = pumpRunning [L798] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L84] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product25.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 631 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 15.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1063 SDtfs, 1433 SDslu, 1290 SDs, 0 SdLazy, 2441 SolverSat, 401 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred 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: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 199 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...