java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:47:55,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:47:55,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:47:55,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:47:55,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:47:55,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:47:55,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:47:55,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:47:55,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:47:55,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:47:55,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:47:55,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:47:55,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:47:55,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:47:55,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:47:55,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:47:55,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:47:55,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:47:55,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:47:55,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:47:55,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:47:55,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:47:55,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:47:55,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:47:55,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:47:55,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:47:55,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:47:55,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:47:55,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:47:55,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:47:55,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:47:55,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:47:55,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:47:55,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:47:55,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:47:55,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:47:55,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:47:55,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:47:55,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:47:55,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:47:55,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:47:55,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:47:55,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:47:55,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:47:55,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:47:55,933 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:47:55,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:47:55,934 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:47:55,934 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:47:55,934 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:47:55,935 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:47:55,935 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:47:55,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:47:55,938 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:47:55,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:47:55,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:47:55,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:47:55,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:47:55,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:47:55,939 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:47:55,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:47:55,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:47:55,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:47:55,941 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:47:55,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:47:55,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:47:55,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:47:55,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:47:55,942 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:47:55,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:47:55,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:47:55,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:47:55,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:47:56,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:47:56,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:47:56,007 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:47:56,007 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:47:56,008 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2019-09-10 02:47:56,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab5acab1/7af98870377a4b93bbeeba8faf3f8220/FLAGfbd5db1da [2019-09-10 02:47:56,631 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:47:56,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2019-09-10 02:47:56,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab5acab1/7af98870377a4b93bbeeba8faf3f8220/FLAGfbd5db1da [2019-09-10 02:47:56,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab5acab1/7af98870377a4b93bbeeba8faf3f8220 [2019-09-10 02:47:56,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:47:56,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:47:56,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:47:56,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:47:56,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:47:56,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:47:56" (1/1) ... [2019-09-10 02:47:56,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ee64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:56, skipping insertion in model container [2019-09-10 02:47:56,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:47:56" (1/1) ... [2019-09-10 02:47:56,941 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:47:57,004 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:47:57,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:47:57,438 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:47:57,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:47:57,588 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:47:57,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57 WrapperNode [2019-09-10 02:47:57,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:47:57,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:47:57,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:47:57,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:47:57,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (1/1) ... [2019-09-10 02:47:57,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (1/1) ... [2019-09-10 02:47:57,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (1/1) ... [2019-09-10 02:47:57,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (1/1) ... [2019-09-10 02:47:57,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (1/1) ... [2019-09-10 02:47:57,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (1/1) ... [2019-09-10 02:47:57,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (1/1) ... [2019-09-10 02:47:57,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:47:57,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:47:57,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:47:57,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:47:57,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (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 [2019-09-10 02:47:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:47:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:47:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:47:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:47:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:47:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:47:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:47:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:47:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:47:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:47:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:47:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:47:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:47:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:47:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:47:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:47:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:47:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:47:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:47:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:47:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:47:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-10 02:47:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-10 02:47:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:47:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:47:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:47:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:47:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:47:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:47:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:47:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-10 02:47:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:47:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:47:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:47:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:47:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:47:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:47:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:47:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:47:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:47:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:47:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:47:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:47:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:47:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:47:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:47:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:47:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:47:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:47:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:47:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:47:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:47:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:47:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:47:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:47:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:47:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:47:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:47:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:47:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:47:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:47:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:47:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:47:57,789 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-10 02:47:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-10 02:47:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:47:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:47:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:47:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:47:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:47:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:47:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:47:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:47:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:47:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:47:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:47:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-10 02:47:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:47:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:47:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:47:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:47:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:47:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:47:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:47:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:47:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:47:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:47:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:47:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:47:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:47:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:47:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:47:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:47:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:47:58,883 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:47:58,884 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:47:58,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:47:58 BoogieIcfgContainer [2019-09-10 02:47:58,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:47:58,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:47:58,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:47:58,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:47:58,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:47:56" (1/3) ... [2019-09-10 02:47:58,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2968e548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:47:58, skipping insertion in model container [2019-09-10 02:47:58,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:47:57" (2/3) ... [2019-09-10 02:47:58,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2968e548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:47:58, skipping insertion in model container [2019-09-10 02:47:58,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:47:58" (3/3) ... [2019-09-10 02:47:58,897 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2019-09-10 02:47:58,907 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:47:58,917 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:47:58,934 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:47:58,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:47:58,973 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:47:58,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:47:58,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:47:58,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:47:58,973 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:47:58,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:47:58,974 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:47:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2019-09-10 02:47:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-10 02:47:59,020 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:47:59,021 INFO L399 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] [2019-09-10 02:47:59,024 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:47:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:47:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2019-09-10 02:47:59,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:47:59,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:47:59,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:47:59,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:47:59,075 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:47:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:47:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:47:59,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:47:59,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:47:59,452 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:47:59,459 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:47:59,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:47:59,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:47:59,480 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 2 states. [2019-09-10 02:47:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:47:59,529 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2019-09-10 02:47:59,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:47:59,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-10 02:47:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:47:59,559 INFO L225 Difference]: With dead ends: 141 [2019-09-10 02:47:59,559 INFO L226 Difference]: Without dead ends: 130 [2019-09-10 02:47:59,562 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:47:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-09-10 02:47:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-09-10 02:47:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-09-10 02:47:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2019-09-10 02:47:59,651 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2019-09-10 02:47:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:47:59,652 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2019-09-10 02:47:59,652 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:47:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2019-09-10 02:47:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-10 02:47:59,657 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:47:59,657 INFO L399 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] [2019-09-10 02:47:59,658 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:47:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:47:59,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2019-09-10 02:47:59,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:47:59,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:47:59,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:47:59,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:47:59,661 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:47:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:47:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:47:59,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:47:59,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:47:59,823 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:47:59,825 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:47:59,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:47:59,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:47:59,826 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 3 states. [2019-09-10 02:47:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:47:59,849 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2019-09-10 02:47:59,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:47:59,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-10 02:47:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:47:59,855 INFO L225 Difference]: With dead ends: 121 [2019-09-10 02:47:59,855 INFO L226 Difference]: Without dead ends: 121 [2019-09-10 02:47:59,856 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:47:59,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-09-10 02:47:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-09-10 02:47:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-09-10 02:47:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2019-09-10 02:47:59,876 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2019-09-10 02:47:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:47:59,876 INFO L475 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2019-09-10 02:47:59,876 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:47:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2019-09-10 02:47:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-10 02:47:59,885 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:47:59,885 INFO L399 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] [2019-09-10 02:47:59,888 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:47:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:47:59,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2019-09-10 02:47:59,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:47:59,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:47:59,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:47:59,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:47:59,891 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:47:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:00,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:00,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:48:00,064 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:00,065 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:48:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:48:00,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:00,066 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 7 states. [2019-09-10 02:48:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:00,551 INFO L93 Difference]: Finished difference Result 268 states and 318 transitions. [2019-09-10 02:48:00,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:48:00,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2019-09-10 02:48:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:00,559 INFO L225 Difference]: With dead ends: 268 [2019-09-10 02:48:00,560 INFO L226 Difference]: Without dead ends: 268 [2019-09-10 02:48:00,560 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:48:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-09-10 02:48:00,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 244. [2019-09-10 02:48:00,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2019-09-10 02:48:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2019-09-10 02:48:00,597 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2019-09-10 02:48:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:00,597 INFO L475 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2019-09-10 02:48:00,597 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:48:00,598 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2019-09-10 02:48:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-10 02:48:00,602 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:00,602 INFO L399 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] [2019-09-10 02:48:00,603 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:00,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2019-09-10 02:48:00,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:00,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:00,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:00,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:00,605 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:00,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:00,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:48:00,775 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:00,775 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:48:00,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:48:00,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:48:00,776 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 6 states. [2019-09-10 02:48:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:00,992 INFO L93 Difference]: Finished difference Result 449 states and 536 transitions. [2019-09-10 02:48:00,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:48:00,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-10 02:48:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:01,002 INFO L225 Difference]: With dead ends: 449 [2019-09-10 02:48:01,002 INFO L226 Difference]: Without dead ends: 449 [2019-09-10 02:48:01,003 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:48:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-09-10 02:48:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2019-09-10 02:48:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-09-10 02:48:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2019-09-10 02:48:01,077 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2019-09-10 02:48:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:01,078 INFO L475 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2019-09-10 02:48:01,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:48:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2019-09-10 02:48:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-10 02:48:01,083 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:01,083 INFO L399 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] [2019-09-10 02:48:01,084 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:01,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2019-09-10 02:48:01,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:01,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:01,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:01,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:01,088 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:01,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:01,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:48:01,233 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:01,233 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:48:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:48:01,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:01,236 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 7 states. [2019-09-10 02:48:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:01,924 INFO L93 Difference]: Finished difference Result 735 states and 922 transitions. [2019-09-10 02:48:01,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-10 02:48:01,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-09-10 02:48:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:01,936 INFO L225 Difference]: With dead ends: 735 [2019-09-10 02:48:01,936 INFO L226 Difference]: Without dead ends: 735 [2019-09-10 02:48:01,937 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:48:01,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2019-09-10 02:48:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 649. [2019-09-10 02:48:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-09-10 02:48:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 777 transitions. [2019-09-10 02:48:02,002 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 777 transitions. Word has length 61 [2019-09-10 02:48:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:02,003 INFO L475 AbstractCegarLoop]: Abstraction has 649 states and 777 transitions. [2019-09-10 02:48:02,003 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:48:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 777 transitions. [2019-09-10 02:48:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-10 02:48:02,007 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:02,008 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:02,008 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:02,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2019-09-10 02:48:02,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:02,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:02,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,012 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:02,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:02,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:48:02,126 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:02,127 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:48:02,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:48:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:48:02,128 INFO L87 Difference]: Start difference. First operand 649 states and 777 transitions. Second operand 4 states. [2019-09-10 02:48:02,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:02,373 INFO L93 Difference]: Finished difference Result 1823 states and 2287 transitions. [2019-09-10 02:48:02,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:48:02,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-09-10 02:48:02,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:02,388 INFO L225 Difference]: With dead ends: 1823 [2019-09-10 02:48:02,388 INFO L226 Difference]: Without dead ends: 1823 [2019-09-10 02:48:02,389 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:48:02,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2019-09-10 02:48:02,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1789. [2019-09-10 02:48:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2019-09-10 02:48:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2213 transitions. [2019-09-10 02:48:02,469 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2213 transitions. Word has length 94 [2019-09-10 02:48:02,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:02,469 INFO L475 AbstractCegarLoop]: Abstraction has 1789 states and 2213 transitions. [2019-09-10 02:48:02,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:48:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2213 transitions. [2019-09-10 02:48:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-10 02:48:02,475 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:02,475 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:02,476 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2019-09-10 02:48:02,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:02,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:02,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,477 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:02,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:02,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:48:02,553 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:02,554 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:48:02,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:48:02,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:48:02,555 INFO L87 Difference]: Start difference. First operand 1789 states and 2213 transitions. Second operand 6 states. [2019-09-10 02:48:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:02,602 INFO L93 Difference]: Finished difference Result 1873 states and 2317 transitions. [2019-09-10 02:48:02,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:48:02,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-09-10 02:48:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:02,616 INFO L225 Difference]: With dead ends: 1873 [2019-09-10 02:48:02,616 INFO L226 Difference]: Without dead ends: 1873 [2019-09-10 02:48:02,616 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2019-09-10 02:48:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1849. [2019-09-10 02:48:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1849 states. [2019-09-10 02:48:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2277 transitions. [2019-09-10 02:48:02,717 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2277 transitions. Word has length 94 [2019-09-10 02:48:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:02,717 INFO L475 AbstractCegarLoop]: Abstraction has 1849 states and 2277 transitions. [2019-09-10 02:48:02,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:48:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2277 transitions. [2019-09-10 02:48:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-10 02:48:02,722 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:02,722 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:02,722 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:02,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:02,723 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2019-09-10 02:48:02,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:02,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:02,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,724 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:02,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:02,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 02:48:02,814 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:02,814 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 02:48:02,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 02:48:02,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:48:02,815 INFO L87 Difference]: Start difference. First operand 1849 states and 2277 transitions. Second operand 8 states. [2019-09-10 02:48:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:02,854 INFO L93 Difference]: Finished difference Result 1503 states and 1819 transitions. [2019-09-10 02:48:02,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:48:02,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2019-09-10 02:48:02,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:02,863 INFO L225 Difference]: With dead ends: 1503 [2019-09-10 02:48:02,863 INFO L226 Difference]: Without dead ends: 1503 [2019-09-10 02:48:02,864 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:48:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2019-09-10 02:48:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1503. [2019-09-10 02:48:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2019-09-10 02:48:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1819 transitions. [2019-09-10 02:48:02,923 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1819 transitions. Word has length 94 [2019-09-10 02:48:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:02,924 INFO L475 AbstractCegarLoop]: Abstraction has 1503 states and 1819 transitions. [2019-09-10 02:48:02,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 02:48:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1819 transitions. [2019-09-10 02:48:02,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 02:48:02,928 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:02,928 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:02,929 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:02,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2019-09-10 02:48:02,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:02,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:02,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:02,930 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:48:03,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:48:03,078 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:48:03,079 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 99 with the following transitions: [2019-09-10 02:48:03,081 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [122], [132], [134], [143], [147], [151], [154], [159], [162], [167], [173], [179], [196], [198], [203], [206], [207], [209], [214], [216], [217], [225], [229], [262], [263], [275], [279], [280], [283], [284], [285], [308], [310], [311], [329], [330], [380], [381], [388], [390], [391], [395], [397], [400], [402], [405], [418], [419], [420], [421], [422], [423], [424], [425], [426], [460], [461], [462], [463], [468], [469], [470], [471], [476], [480], [481], [482], [483], [484], [485], [488], [489], [490], [498], [500], [501], [506], [507], [508], [510], [511], [512], [513], [514] [2019-09-10 02:48:03,128 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:48:03,129 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:48:03,209 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:48:03,211 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-10 02:48:03,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:03,216 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:48:03,261 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:48:03,261 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:48:03,264 INFO L420 sIntCurrentIteration]: We unified 97 AI predicates to 97 [2019-09-10 02:48:03,265 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:48:03,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:48:03,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-10 02:48:03,266 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:03,267 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:48:03,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:48:03,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:03,267 INFO L87 Difference]: Start difference. First operand 1503 states and 1819 transitions. Second operand 2 states. [2019-09-10 02:48:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:03,268 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:48:03,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:48:03,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 98 [2019-09-10 02:48:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:03,269 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:48:03,269 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:48:03,269 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:48:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:48:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:48:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:48:03,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2019-09-10 02:48:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:03,270 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:48:03,271 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:48:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:48:03,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:48:03,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:48:03 BoogieIcfgContainer [2019-09-10 02:48:03,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:48:03,280 INFO L168 Benchmark]: Toolchain (without parser) took 6353.70 ms. Allocated memory was 135.3 MB in the beginning and 304.6 MB in the end (delta: 169.3 MB). Free memory was 90.7 MB in the beginning and 148.4 MB in the end (delta: -57.7 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:03,281 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:48:03,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.37 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.5 MB in the beginning and 166.2 MB in the end (delta: -75.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:03,283 INFO L168 Benchmark]: Boogie Preprocessor took 120.03 ms. Allocated memory is still 201.9 MB. Free memory was 166.2 MB in the beginning and 160.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:03,284 INFO L168 Benchmark]: RCFGBuilder took 1175.99 ms. Allocated memory was 201.9 MB in the beginning and 230.7 MB in the end (delta: 28.8 MB). Free memory was 160.1 MB in the beginning and 192.0 MB in the end (delta: -31.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:03,285 INFO L168 Benchmark]: TraceAbstraction took 4389.83 ms. Allocated memory was 230.7 MB in the beginning and 304.6 MB in the end (delta: 73.9 MB). Free memory was 192.0 MB in the beginning and 148.4 MB in the end (delta: 43.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:03,289 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.37 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.5 MB in the beginning and 166.2 MB in the end (delta: -75.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.03 ms. Allocated memory is still 201.9 MB. Free memory was 166.2 MB in the beginning and 160.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1175.99 ms. Allocated memory was 201.9 MB in the beginning and 230.7 MB in the end (delta: 28.8 MB). Free memory was 160.1 MB in the beginning and 192.0 MB in the end (delta: -31.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4389.83 ms. Allocated memory was 230.7 MB in the beginning and 304.6 MB in the end (delta: 73.9 MB). Free memory was 192.0 MB in the beginning and 148.4 MB in the end (delta: 43.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1291 SDtfs, 720 SDslu, 3031 SDs, 0 SdLazy, 841 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1849occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.1134020618556701 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 174 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 643 NumberOfCodeBlocks, 643 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 77521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...