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_spec3_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:30,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:30,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:30,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:30,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:30,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:30,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:30,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:30,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:30,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:30,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:30,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:30,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:30,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:30,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:30,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:30,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:30,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:30,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:30,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:30,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:30,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:30,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:30,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:30,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:30,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:30,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:30,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:30,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:30,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:30,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:30,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:30,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:30,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:30,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:30,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:30,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:30,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:30,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:30,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:30,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:30,835 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 [2019-09-20 13:30:30,849 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:30,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:30,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:30,850 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:30,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:30,851 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:30,851 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:30,851 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:30,852 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:30,852 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:30,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:30,853 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:30,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:30,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:30,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:30,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:30,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:30,854 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:30,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:30,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:30,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:30,855 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:30,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:30,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:30,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:30,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:30,856 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:30,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:30,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:30,856 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:30,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:30,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:30,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:30,906 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:30,906 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:30,907 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-09-20 13:30:30,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02e8110a/8cbd394fea4f4aaf82afc53f81c96372/FLAG17c021895 [2019-09-20 13:30:31,570 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:31,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-09-20 13:30:31,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02e8110a/8cbd394fea4f4aaf82afc53f81c96372/FLAG17c021895 [2019-09-20 13:30:31,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02e8110a/8cbd394fea4f4aaf82afc53f81c96372 [2019-09-20 13:30:31,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:31,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:31,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:31,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:31,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:31,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:31" (1/1) ... [2019-09-20 13:30:31,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4229c3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:31, skipping insertion in model container [2019-09-20 13:30:31,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:31" (1/1) ... [2019-09-20 13:30:31,887 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:31,954 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:32,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:32,435 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:32,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:32,612 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:32,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32 WrapperNode [2019-09-20 13:30:32,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:32,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:32,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:32,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:32,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (1/1) ... [2019-09-20 13:30:32,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (1/1) ... [2019-09-20 13:30:32,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (1/1) ... [2019-09-20 13:30:32,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (1/1) ... [2019-09-20 13:30:32,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (1/1) ... [2019-09-20 13:30:32,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (1/1) ... [2019-09-20 13:30:32,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (1/1) ... [2019-09-20 13:30:32,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:32,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:32,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:32,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:32,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (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 [2019-09-20 13:30:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:32,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:32,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:32,800 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:33,989 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:33,989 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:33,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:33 BoogieIcfgContainer [2019-09-20 13:30:33,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:33,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:33,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:33,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:33,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:31" (1/3) ... [2019-09-20 13:30:33,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4499521c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:33, skipping insertion in model container [2019-09-20 13:30:33,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:32" (2/3) ... [2019-09-20 13:30:33,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4499521c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:33, skipping insertion in model container [2019-09-20 13:30:33,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:33" (3/3) ... [2019-09-20 13:30:34,000 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2019-09-20 13:30:34,011 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:34,021 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:34,039 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:34,069 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:34,069 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:34,069 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:34,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:34,070 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:34,070 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:34,070 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:34,071 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-09-20 13:30:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:34,108 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,110 INFO L407 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] [2019-09-20 13:30:34,113 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,119 INFO L82 PathProgramCache]: Analyzing trace with hash 291336746, now seen corresponding path program 1 times [2019-09-20 13:30:34,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,183 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:34,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:34,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:34,535 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:34,541 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:34,565 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 2 states. [2019-09-20 13:30:34,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:34,598 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2019-09-20 13:30:34,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:34,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-20 13:30:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:34,613 INFO L225 Difference]: With dead ends: 149 [2019-09-20 13:30:34,613 INFO L226 Difference]: Without dead ends: 138 [2019-09-20 13:30:34,615 INFO L636 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 [2019-09-20 13:30:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-09-20 13:30:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-09-20 13:30:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-09-20 13:30:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2019-09-20 13:30:34,676 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2019-09-20 13:30:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,676 INFO L475 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2019-09-20 13:30:34,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2019-09-20 13:30:34,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:30:34,681 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,681 INFO L407 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] [2019-09-20 13:30:34,681 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,682 INFO L82 PathProgramCache]: Analyzing trace with hash -951540010, now seen corresponding path program 1 times [2019-09-20 13:30:34,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,685 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:34,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:34,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:34,861 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:34,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:34,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:34,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:34,868 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 3 states. [2019-09-20 13:30:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:34,899 INFO L93 Difference]: Finished difference Result 129 states and 149 transitions. [2019-09-20 13:30:34,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:34,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-20 13:30:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:34,905 INFO L225 Difference]: With dead ends: 129 [2019-09-20 13:30:34,906 INFO L226 Difference]: Without dead ends: 129 [2019-09-20 13:30:34,907 INFO L636 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 [2019-09-20 13:30:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-09-20 13:30:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-09-20 13:30:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-09-20 13:30:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2019-09-20 13:30:34,930 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 53 [2019-09-20 13:30:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,931 INFO L475 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2019-09-20 13:30:34,931 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2019-09-20 13:30:34,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-20 13:30:34,933 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,934 INFO L407 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] [2019-09-20 13:30:34,934 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1718267444, now seen corresponding path program 1 times [2019-09-20 13:30:34,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,938 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:35,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:35,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:35,178 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:35,178 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:35,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:35,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:35,182 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2019-09-20 13:30:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:35,451 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2019-09-20 13:30:35,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:35,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-09-20 13:30:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:35,454 INFO L225 Difference]: With dead ends: 129 [2019-09-20 13:30:35,454 INFO L226 Difference]: Without dead ends: 129 [2019-09-20 13:30:35,454 INFO L636 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 [2019-09-20 13:30:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-09-20 13:30:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-09-20 13:30:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-09-20 13:30:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2019-09-20 13:30:35,465 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 58 [2019-09-20 13:30:35,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:35,466 INFO L475 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2019-09-20 13:30:35,466 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2019-09-20 13:30:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-20 13:30:35,469 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:35,469 INFO L407 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] [2019-09-20 13:30:35,470 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:35,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:35,470 INFO L82 PathProgramCache]: Analyzing trace with hash -625773272, now seen corresponding path program 1 times [2019-09-20 13:30:35,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:35,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:35,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,474 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:35,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:35,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:35,655 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:35,656 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:35,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:35,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:35,657 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand 5 states. [2019-09-20 13:30:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:36,224 INFO L93 Difference]: Finished difference Result 240 states and 277 transitions. [2019-09-20 13:30:36,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:36,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-09-20 13:30:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:36,229 INFO L225 Difference]: With dead ends: 240 [2019-09-20 13:30:36,229 INFO L226 Difference]: Without dead ends: 240 [2019-09-20 13:30:36,230 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2019-09-20 13:30:36,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 221. [2019-09-20 13:30:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-09-20 13:30:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 251 transitions. [2019-09-20 13:30:36,249 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 251 transitions. Word has length 71 [2019-09-20 13:30:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:36,250 INFO L475 AbstractCegarLoop]: Abstraction has 221 states and 251 transitions. [2019-09-20 13:30:36,250 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 251 transitions. [2019-09-20 13:30:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-20 13:30:36,253 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:36,253 INFO L407 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] [2019-09-20 13:30:36,253 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1888633043, now seen corresponding path program 1 times [2019-09-20 13:30:36,254 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:36,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:36,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:36,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:36,257 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:36,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:36,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:36,351 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:36,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:36,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:36,353 INFO L87 Difference]: Start difference. First operand 221 states and 251 transitions. Second operand 6 states. [2019-09-20 13:30:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:36,560 INFO L93 Difference]: Finished difference Result 341 states and 393 transitions. [2019-09-20 13:30:36,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:36,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2019-09-20 13:30:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:36,568 INFO L225 Difference]: With dead ends: 341 [2019-09-20 13:30:36,568 INFO L226 Difference]: Without dead ends: 341 [2019-09-20 13:30:36,569 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2019-09-20 13:30:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 337. [2019-09-20 13:30:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2019-09-20 13:30:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 389 transitions. [2019-09-20 13:30:36,616 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 389 transitions. Word has length 85 [2019-09-20 13:30:36,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:36,617 INFO L475 AbstractCegarLoop]: Abstraction has 337 states and 389 transitions. [2019-09-20 13:30:36,617 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 389 transitions. [2019-09-20 13:30:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:36,623 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:36,623 INFO L407 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] [2019-09-20 13:30:36,623 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:36,624 INFO L82 PathProgramCache]: Analyzing trace with hash 408582233, now seen corresponding path program 1 times [2019-09-20 13:30:36,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:36,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:36,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:36,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:36,627 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:36,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:36,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:36,796 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:36,796 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:36,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:36,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:36,797 INFO L87 Difference]: Start difference. First operand 337 states and 389 transitions. Second operand 6 states. [2019-09-20 13:30:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,064 INFO L93 Difference]: Finished difference Result 529 states and 626 transitions. [2019-09-20 13:30:37,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:37,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-20 13:30:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,076 INFO L225 Difference]: With dead ends: 529 [2019-09-20 13:30:37,076 INFO L226 Difference]: Without dead ends: 529 [2019-09-20 13:30:37,077 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2019-09-20 13:30:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2019-09-20 13:30:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2019-09-20 13:30:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2019-09-20 13:30:37,105 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 89 [2019-09-20 13:30:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,106 INFO L475 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2019-09-20 13:30:37,106 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2019-09-20 13:30:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:37,108 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,108 INFO L407 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] [2019-09-20 13:30:37,109 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,109 INFO L82 PathProgramCache]: Analyzing trace with hash -514101350, now seen corresponding path program 1 times [2019-09-20 13:30:37,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,112 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:37,177 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:37,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:37,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:37,178 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 5 states. [2019-09-20 13:30:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,206 INFO L93 Difference]: Finished difference Result 521 states and 613 transitions. [2019-09-20 13:30:37,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:30:37,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2019-09-20 13:30:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,212 INFO L225 Difference]: With dead ends: 521 [2019-09-20 13:30:37,213 INFO L226 Difference]: Without dead ends: 521 [2019-09-20 13:30:37,213 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-09-20 13:30:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 515. [2019-09-20 13:30:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-09-20 13:30:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 606 transitions. [2019-09-20 13:30:37,253 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 606 transitions. Word has length 89 [2019-09-20 13:30:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,254 INFO L475 AbstractCegarLoop]: Abstraction has 515 states and 606 transitions. [2019-09-20 13:30:37,254 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 606 transitions. [2019-09-20 13:30:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:37,261 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,261 INFO L407 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] [2019-09-20 13:30:37,261 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1358106852, now seen corresponding path program 1 times [2019-09-20 13:30:37,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,265 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:30:37,385 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,385 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:30:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:30:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:37,386 INFO L87 Difference]: Start difference. First operand 515 states and 606 transitions. Second operand 9 states. [2019-09-20 13:30:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,455 INFO L93 Difference]: Finished difference Result 521 states and 613 transitions. [2019-09-20 13:30:37,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:37,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2019-09-20 13:30:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,460 INFO L225 Difference]: With dead ends: 521 [2019-09-20 13:30:37,460 INFO L226 Difference]: Without dead ends: 521 [2019-09-20 13:30:37,460 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:37,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-09-20 13:30:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 515. [2019-09-20 13:30:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-09-20 13:30:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 604 transitions. [2019-09-20 13:30:37,485 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 604 transitions. Word has length 89 [2019-09-20 13:30:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,485 INFO L475 AbstractCegarLoop]: Abstraction has 515 states and 604 transitions. [2019-09-20 13:30:37,485 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:30:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 604 transitions. [2019-09-20 13:30:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-09-20 13:30:37,489 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,490 INFO L407 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] [2019-09-20 13:30:37,490 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,490 INFO L82 PathProgramCache]: Analyzing trace with hash -967187523, now seen corresponding path program 1 times [2019-09-20 13:30:37,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,494 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:30:37,619 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,619 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:30:37,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:30:37,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:37,620 INFO L87 Difference]: Start difference. First operand 515 states and 604 transitions. Second operand 10 states. [2019-09-20 13:30:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,884 INFO L93 Difference]: Finished difference Result 521 states and 598 transitions. [2019-09-20 13:30:37,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-20 13:30:37,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2019-09-20 13:30:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,888 INFO L225 Difference]: With dead ends: 521 [2019-09-20 13:30:37,888 INFO L226 Difference]: Without dead ends: 521 [2019-09-20 13:30:37,889 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:30:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-09-20 13:30:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 500. [2019-09-20 13:30:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2019-09-20 13:30:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 569 transitions. [2019-09-20 13:30:37,906 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 569 transitions. Word has length 90 [2019-09-20 13:30:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,907 INFO L475 AbstractCegarLoop]: Abstraction has 500 states and 569 transitions. [2019-09-20 13:30:37,907 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:30:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 569 transitions. [2019-09-20 13:30:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-20 13:30:37,910 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,911 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-09-20 13:30:37,911 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash 890937388, now seen corresponding path program 1 times [2019-09-20 13:30:37,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,914 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:30:38,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:38,031 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:38,033 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2019-09-20 13:30:38,036 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [85], [88], [92], [93], [94], [110], [113], [115], [116], [119], [121], [124], [131], [134], [136], [145], [149], [153], [156], [159], [161], [167], [169], [175], [178], [188], [189], [199], [200], [201], [202], [203], [205], [208], [212], [213], [214], [215], [218], [221], [225], [231], [260], [264], [267], [270], [272], [275], [285], [288], [292], [293], [296], [297], [298], [325], [326], [391], [392], [402], [404], [407], [409], [411], [414], [416], [421], [427], [428], [436], [437], [438], [439], [440], [441], [442], [443], [444], [476], [477], [478], [479], [480], [481], [484], [485], [486], [487], [492], [493], [496], [497], [498], [499], [500], [501], [502], [503], [508], [509], [510], [511], [518], [526], [527], [528], [529], [530], [531], [532], [534], [535], [536] [2019-09-20 13:30:38,091 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:38,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:38,176 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:38,179 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. [2019-09-20 13:30:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:38,184 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:38,271 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:38,272 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:38,279 INFO L420 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2019-09-20 13:30:38,279 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:38,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:38,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-20 13:30:38,281 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:38,282 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:38,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:38,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:38,282 INFO L87 Difference]: Start difference. First operand 500 states and 569 transitions. Second operand 2 states. [2019-09-20 13:30:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:38,283 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:38,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:38,283 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 140 [2019-09-20 13:30:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:38,284 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:38,284 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:38,285 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:38,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:38,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 140 [2019-09-20 13:30:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:38,287 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:38,287 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:38,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:38,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:38 BoogieIcfgContainer [2019-09-20 13:30:38,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:38,296 INFO L168 Benchmark]: Toolchain (without parser) took 6425.69 ms. Allocated memory was 136.8 MB in the beginning and 337.6 MB in the end (delta: 200.8 MB). Free memory was 84.0 MB in the beginning and 250.8 MB in the end (delta: -166.8 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:38,297 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:38,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.03 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 83.8 MB in the beginning and 161.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:38,300 INFO L168 Benchmark]: Boogie Preprocessor took 115.05 ms. Allocated memory is still 197.7 MB. Free memory was 161.0 MB in the beginning and 156.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:38,306 INFO L168 Benchmark]: RCFGBuilder took 1262.63 ms. Allocated memory was 197.7 MB in the beginning and 217.6 MB in the end (delta: 19.9 MB). Free memory was 156.5 MB in the beginning and 184.2 MB in the end (delta: -27.7 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:38,307 INFO L168 Benchmark]: TraceAbstraction took 4300.88 ms. Allocated memory was 217.6 MB in the beginning and 337.6 MB in the end (delta: 120.1 MB). Free memory was 184.2 MB in the beginning and 250.8 MB in the end (delta: -66.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:38,317 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 743.03 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 83.8 MB in the beginning and 161.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.05 ms. Allocated memory is still 197.7 MB. Free memory was 161.0 MB in the beginning and 156.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1262.63 ms. Allocated memory was 197.7 MB in the beginning and 217.6 MB in the end (delta: 19.9 MB). Free memory was 156.5 MB in the beginning and 184.2 MB in the end (delta: -27.7 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4300.88 ms. Allocated memory was 217.6 MB in the beginning and 337.6 MB in the end (delta: 120.1 MB). Free memory was 184.2 MB in the beginning and 250.8 MB in the end (delta: -66.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 694]: 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 41 procedures, 242 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1477 SDtfs, 664 SDslu, 4603 SDs, 0 SdLazy, 737 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred 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, 0.935251798561151 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 816 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 102235 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 23/25 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...