/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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:55:53,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:55:53,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:55:53,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:55:53,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:55:53,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:55:53,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:55:53,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:55:53,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:55:53,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:55:53,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:55:53,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:55:53,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:55:53,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:55:53,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:55:53,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:55:53,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:55:53,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:55:53,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:55:53,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:55:53,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:55:53,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:55:53,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:55:53,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:55:53,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:55:53,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:55:53,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:55:53,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:55:53,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:55:53,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:55:53,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:55:53,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:55:53,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:55:53,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:55:53,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:55:53,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:55:53,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:55:53,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:55:53,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:55:53,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:55:53,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:55:53,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:55:53,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:55:53,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:55:53,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:55:53,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:55:53,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:55:53,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:55:53,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:55:53,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:55:53,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:55:53,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:55:53,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:55:53,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:55:53,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:55:53,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:55:53,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:55:53,381 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:55:53,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:55:53,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:55:53,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:55:53,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:55:53,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:55:53,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:55:53,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:55:53,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:55:53,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:55:53,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:55:53,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:55:53,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:55:53,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-10-23 19:55:53,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d069baf78/ec165be506064eacbe6b50dc6419c6bb/FLAG22ae7b13e [2020-10-23 19:55:54,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:55:54,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-10-23 19:55:54,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d069baf78/ec165be506064eacbe6b50dc6419c6bb/FLAG22ae7b13e [2020-10-23 19:55:54,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d069baf78/ec165be506064eacbe6b50dc6419c6bb [2020-10-23 19:55:54,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:55:54,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:55:54,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:55:54,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:55:54,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:55:54,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:55:54" (1/1) ... [2020-10-23 19:55:54,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e014ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:54, skipping insertion in model container [2020-10-23 19:55:54,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:55:54" (1/1) ... [2020-10-23 19:55:54,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:55:55,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:55:55,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:55:55,490 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:55:55,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:55:55,669 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:55:55,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55 WrapperNode [2020-10-23 19:55:55,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:55:55,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:55:55,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:55:55,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:55:55,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (1/1) ... [2020-10-23 19:55:55,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (1/1) ... [2020-10-23 19:55:55,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (1/1) ... [2020-10-23 19:55:55,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (1/1) ... [2020-10-23 19:55:55,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (1/1) ... [2020-10-23 19:55:55,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (1/1) ... [2020-10-23 19:55:55,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (1/1) ... [2020-10-23 19:55:55,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:55:55,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:55:55,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:55:55,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:55:55,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (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 [2020-10-23 19:55:55,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:55:55,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:55:55,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:55:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:55:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:55:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:55:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:55:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:55:55,883 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:55:55,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:55:55,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:55:55,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:55:55,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:55:55,884 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:55:55,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:55:55,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:55:55,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:55:55,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:55:55,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:55:55,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:55:55,885 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:55:55,885 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:55:55,886 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-10-23 19:55:55,886 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:55:55,886 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:55:55,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:55:55,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:55:55,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:55:55,887 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:55:55,887 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:55:55,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:55:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:55:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:55:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:55:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:55:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:55:55,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:55:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:55:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:55:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:55:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:55:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:55:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:55:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:55:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:55:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:55:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:55:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:55:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:55:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:55:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:55:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:55:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:55:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:55:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:55:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:55:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:55:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:55:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:55:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:55:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:55:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:55:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:55:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:55:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:55:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:55:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:55:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:55:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:55:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:55:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:55:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:55:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:55:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:55:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:55:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:55:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:55:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:55:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:55:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:55:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:55:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:55:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:55:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-10-23 19:55:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:55:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:55:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:55:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:55:57,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:55:57,112 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:55:57,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:55:57 BoogieIcfgContainer [2020-10-23 19:55:57,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:55:57,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:55:57,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:55:57,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:55:57,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:55:54" (1/3) ... [2020-10-23 19:55:57,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201d4d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:55:57, skipping insertion in model container [2020-10-23 19:55:57,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:55:55" (2/3) ... [2020-10-23 19:55:57,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201d4d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:55:57, skipping insertion in model container [2020-10-23 19:55:57,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:55:57" (3/3) ... [2020-10-23 19:55:57,125 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product11.cil.c [2020-10-23 19:55:57,137 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:55:57,144 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:55:57,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:55:57,182 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:55:57,182 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:55:57,182 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:55:57,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:55:57,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:55:57,183 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:55:57,183 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:55:57,183 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:55:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states. [2020-10-23 19:55:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:55:57,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:57,225 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] [2020-10-23 19:55:57,226 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]=== [2020-10-23 19:55:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1931328131, now seen corresponding path program 1 times [2020-10-23 19:55:57,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:57,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757924572] [2020-10-23 19:55:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:57,352 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,125 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:55:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:55:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:55:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:55:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:55:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:55:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:55:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:55:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:58,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757924572] [2020-10-23 19:55:58,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:58,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:55:58,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384956176] [2020-10-23 19:55:58,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:55:58,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:55:58,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:55:58,370 INFO L87 Difference]: Start difference. First operand 286 states. Second operand 3 states. [2020-10-23 19:55:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:59,857 INFO L93 Difference]: Finished difference Result 395 states and 472 transitions. [2020-10-23 19:55:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:55:59,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:55:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:59,879 INFO L225 Difference]: With dead ends: 395 [2020-10-23 19:55:59,879 INFO L226 Difference]: Without dead ends: 255 [2020-10-23 19:55:59,884 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 [2020-10-23 19:55:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-23 19:56:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 216. [2020-10-23 19:56:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-23 19:56:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 231 transitions. [2020-10-23 19:56:00,052 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 231 transitions. Word has length 159 [2020-10-23 19:56:00,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:00,055 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 231 transitions. [2020-10-23 19:56:00,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:56:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 231 transitions. [2020-10-23 19:56:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:56:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:00,068 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] [2020-10-23 19:56:00,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:56:00,069 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]=== [2020-10-23 19:56:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash -340340362, now seen corresponding path program 1 times [2020-10-23 19:56:00,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:00,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345747773] [2020-10-23 19:56:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:00,077 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,656 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:00,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:56:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:56:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:56:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:56:00,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345747773] [2020-10-23 19:56:00,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:00,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:56:00,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846568071] [2020-10-23 19:56:00,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:56:00,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:00,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:56:00,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:56:00,756 INFO L87 Difference]: Start difference. First operand 216 states and 231 transitions. Second operand 4 states. [2020-10-23 19:56:01,589 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:02,375 INFO L93 Difference]: Finished difference Result 300 states and 333 transitions. [2020-10-23 19:56:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:56:02,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:56:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:02,379 INFO L225 Difference]: With dead ends: 300 [2020-10-23 19:56:02,379 INFO L226 Difference]: Without dead ends: 238 [2020-10-23 19:56:02,381 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 [2020-10-23 19:56:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-23 19:56:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2020-10-23 19:56:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-23 19:56:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 218 transitions. [2020-10-23 19:56:02,467 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 218 transitions. Word has length 160 [2020-10-23 19:56:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:02,468 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 218 transitions. [2020-10-23 19:56:02,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:56:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 218 transitions. [2020-10-23 19:56:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-23 19:56:02,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:02,471 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] [2020-10-23 19:56:02,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:56:02,471 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]=== [2020-10-23 19:56:02,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:02,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2050856472, now seen corresponding path program 1 times [2020-10-23 19:56:02,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:02,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278326305] [2020-10-23 19:56:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:02,476 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,034 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:56:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:56:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 19:56:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:56:03,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278326305] [2020-10-23 19:56:03,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:03,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:56:03,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998291365] [2020-10-23 19:56:03,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:56:03,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:56:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:56:03,326 INFO L87 Difference]: Start difference. First operand 206 states and 218 transitions. Second operand 9 states. [2020-10-23 19:56:04,028 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:04,524 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:04,922 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:56:05,306 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:05,703 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:06,070 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:07,197 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:08,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:08,913 INFO L93 Difference]: Finished difference Result 523 states and 596 transitions. [2020-10-23 19:56:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:56:08,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-23 19:56:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:08,920 INFO L225 Difference]: With dead ends: 523 [2020-10-23 19:56:08,920 INFO L226 Difference]: Without dead ends: 432 [2020-10-23 19:56:08,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:56:08,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-23 19:56:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 359. [2020-10-23 19:56:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-23 19:56:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 394 transitions. [2020-10-23 19:56:09,084 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 394 transitions. Word has length 169 [2020-10-23 19:56:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:09,085 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 394 transitions. [2020-10-23 19:56:09,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:56:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 394 transitions. [2020-10-23 19:56:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 19:56:09,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:09,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:56:09,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:56:09,089 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]=== [2020-10-23 19:56:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:09,090 INFO L82 PathProgramCache]: Analyzing trace with hash 778814894, now seen corresponding path program 1 times [2020-10-23 19:56:09,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:09,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460370215] [2020-10-23 19:56:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:09,094 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,486 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:09,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:56:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:56:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:56:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:56:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:56:09,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460370215] [2020-10-23 19:56:09,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:09,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:56:09,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818735590] [2020-10-23 19:56:09,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:56:09,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:09,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:56:09,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:56:09,665 INFO L87 Difference]: Start difference. First operand 359 states and 394 transitions. Second operand 8 states. [2020-10-23 19:56:10,365 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:11,957 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:12,354 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:12,758 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:13,175 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:13,556 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:13,962 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:14,317 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:14,830 INFO L93 Difference]: Finished difference Result 857 states and 1001 transitions. [2020-10-23 19:56:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:56:14,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-10-23 19:56:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:14,838 INFO L225 Difference]: With dead ends: 857 [2020-10-23 19:56:14,838 INFO L226 Difference]: Without dead ends: 613 [2020-10-23 19:56:14,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:56:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-10-23 19:56:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 577. [2020-10-23 19:56:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-23 19:56:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 653 transitions. [2020-10-23 19:56:15,112 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 653 transitions. Word has length 172 [2020-10-23 19:56:15,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:15,112 INFO L481 AbstractCegarLoop]: Abstraction has 577 states and 653 transitions. [2020-10-23 19:56:15,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:56:15,112 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 653 transitions. [2020-10-23 19:56:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-23 19:56:15,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:15,116 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] [2020-10-23 19:56:15,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:56:15,117 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]=== [2020-10-23 19:56:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash -556166915, now seen corresponding path program 1 times [2020-10-23 19:56:15,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:15,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045217440] [2020-10-23 19:56:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:15,121 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,555 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:56:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:56:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:56:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:56:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:56:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:56:15,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045217440] [2020-10-23 19:56:15,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:15,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:56:15,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053591649] [2020-10-23 19:56:15,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:56:15,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:15,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:56:15,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:56:15,735 INFO L87 Difference]: Start difference. First operand 577 states and 653 transitions. Second operand 5 states. [2020-10-23 19:56:16,342 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:17,136 INFO L93 Difference]: Finished difference Result 952 states and 1102 transitions. [2020-10-23 19:56:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:56:17,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-23 19:56:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:17,141 INFO L225 Difference]: With dead ends: 952 [2020-10-23 19:56:17,141 INFO L226 Difference]: Without dead ends: 550 [2020-10-23 19:56:17,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:56:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-23 19:56:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 528. [2020-10-23 19:56:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-23 19:56:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 579 transitions. [2020-10-23 19:56:17,340 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 579 transitions. Word has length 177 [2020-10-23 19:56:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:17,340 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 579 transitions. [2020-10-23 19:56:17,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:56:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 579 transitions. [2020-10-23 19:56:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-23 19:56:17,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:17,344 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] [2020-10-23 19:56:17,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:56:17,345 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]=== [2020-10-23 19:56:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:17,345 INFO L82 PathProgramCache]: Analyzing trace with hash 887211403, now seen corresponding path program 1 times [2020-10-23 19:56:17,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:17,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957580338] [2020-10-23 19:56:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:17,349 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:17,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:17,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:17,695 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:56:17,695 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:56:17,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:56:17,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:56:17 BoogieIcfgContainer [2020-10-23 19:56:17,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:56:17,725 INFO L168 Benchmark]: Toolchain (without parser) took 22795.52 ms. Allocated memory was 125.8 MB in the beginning and 425.7 MB in the end (delta: 299.9 MB). Free memory was 100.9 MB in the beginning and 288.8 MB in the end (delta: -187.9 MB). Peak memory consumption was 112.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:17,726 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:56:17,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.31 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 79.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:17,728 INFO L168 Benchmark]: Boogie Preprocessor took 104.95 ms. Allocated memory is still 125.8 MB. Free memory was 79.9 MB in the beginning and 76.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:17,729 INFO L168 Benchmark]: RCFGBuilder took 1339.07 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 76.1 MB in the beginning and 81.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:17,729 INFO L168 Benchmark]: TraceAbstraction took 20605.98 ms. Allocated memory was 151.0 MB in the beginning and 425.7 MB in the end (delta: 274.7 MB). Free memory was 81.0 MB in the beginning and 288.8 MB in the end (delta: -207.8 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:17,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 731.31 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 79.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.95 ms. Allocated memory is still 125.8 MB. Free memory was 79.9 MB in the beginning and 76.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1339.07 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 76.1 MB in the beginning and 81.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20605.98 ms. Allocated memory was 151.0 MB in the beginning and 425.7 MB in the end (delta: 274.7 MB). Free memory was 81.0 MB in the beginning and 288.8 MB in the end (delta: -207.8 MB). Peak memory consumption was 66.4 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: [L80] int cleanupTimeShifts = 4; [L388] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L161] int retValue_acc ; [L162] int tmp ; [L166] FCALL select_helpers() [L167] FCALL select_features() [L168] CALL, EXPR valid_product() [L210] int retValue_acc ; [L213] retValue_acc = 1 [L214] return (retValue_acc); [L168] RET, EXPR valid_product() [L168] tmp = valid_product() [L170] COND TRUE \read(tmp) [L172] FCALL setup() [L173] CALL runTest() [L152] CALL test() [L731] int splverifierCounter ; [L732] int tmp ; [L733] int tmp___0 ; [L734] int tmp___1 ; [L735] int tmp___2 ; [L738] splverifierCounter = 0 [L740] COND TRUE 1 [L742] COND TRUE splverifierCounter < 4 [L748] tmp = __VERIFIER_nondet_int() [L750] COND TRUE \read(tmp) [L752] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L752] RET waterRise() [L758] tmp___0 = __VERIFIER_nondet_int() [L760] COND FALSE !(\read(tmp___0)) [L768] tmp___2 = __VERIFIER_nondet_int() [L770] COND TRUE \read(tmp___2) [L785] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND TRUE \read(systemActive) [L606] FCALL processEnvironment() [L612] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L877] int retValue_acc ; [L880] retValue_acc = waterLevel [L881] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L670] int retValue_acc ; [L673] retValue_acc = pumpRunning [L674] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L801] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product11.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 606 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 987 SDtfs, 1208 SDslu, 1350 SDs, 0 SdLazy, 2279 SolverSat, 390 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=577occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 202 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...