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_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:59:09,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:59:09,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:59:09,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:59:09,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:59:09,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:59:09,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:59:09,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:59:09,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:59:09,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:59:09,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:59:09,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:59:09,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:59:09,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:59:09,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:59:09,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:59:09,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:59:09,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:59:09,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:59:09,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:59:09,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:59:09,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:59:09,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:59:09,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:59:09,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:59:09,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:59:09,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:59:09,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:59:09,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:59:09,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:59:09,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:59:09,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:59:09,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:59:09,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:59:09,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:59:09,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:59:09,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:59:09,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:59:09,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:59:09,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:59:09,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:59:09,855 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 [2019-10-03 02:59:09,883 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:59:09,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:59:09,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:59:09,887 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:59:09,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:59:09,887 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:59:09,888 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:59:09,888 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:59:09,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:59:09,889 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:59:09,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:59:09,890 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:59:09,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:59:09,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:59:09,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:59:09,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:59:09,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:59:09,892 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:59:09,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:59:09,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:59:09,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:59:09,893 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:59:09,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:59:09,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:59:09,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:59:09,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:59:09,894 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:59:09,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:59:09,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:59:09,895 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:59:09,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:59:09,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:59:09,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:59:09,983 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:59:09,984 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:59:09,985 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-03 02:59:10,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2f1739b/a96ec2288ddf4943afd1a05fdf3d937c/FLAG1c0954cc9 [2019-10-03 02:59:10,592 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:59:10,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-03 02:59:10,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2f1739b/a96ec2288ddf4943afd1a05fdf3d937c/FLAG1c0954cc9 [2019-10-03 02:59:10,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2f1739b/a96ec2288ddf4943afd1a05fdf3d937c [2019-10-03 02:59:10,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:59:10,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:59:10,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:10,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:59:10,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:59:10,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:10" (1/1) ... [2019-10-03 02:59:10,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e6fa03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:10, skipping insertion in model container [2019-10-03 02:59:10,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:10" (1/1) ... [2019-10-03 02:59:10,897 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:59:10,966 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:59:11,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:11,447 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:59:11,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:11,560 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:59:11,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11 WrapperNode [2019-10-03 02:59:11,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:11,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:59:11,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:59:11,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:59:11,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (1/1) ... [2019-10-03 02:59:11,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (1/1) ... [2019-10-03 02:59:11,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (1/1) ... [2019-10-03 02:59:11,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (1/1) ... [2019-10-03 02:59:11,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (1/1) ... [2019-10-03 02:59:11,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (1/1) ... [2019-10-03 02:59:11,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (1/1) ... [2019-10-03 02:59:11,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:59:11,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:59:11,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:59:11,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:59:11,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (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 [2019-10-03 02:59:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:59:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:59:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-03 02:59:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-03 02:59:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-03 02:59:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-03 02:59:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-03 02:59:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-03 02:59:11,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-03 02:59:11,768 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-03 02:59:11,768 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-03 02:59:11,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-03 02:59:11,769 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-03 02:59:11,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:59:11,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-03 02:59:11,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-03 02:59:11,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-03 02:59:11,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-03 02:59:11,772 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-03 02:59:11,772 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-03 02:59:11,772 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-03 02:59:11,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-03 02:59:11,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-03 02:59:11,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-03 02:59:11,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-03 02:59:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-03 02:59:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-03 02:59:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-03 02:59:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-03 02:59:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:59:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-03 02:59:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-03 02:59:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-03 02:59:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-03 02:59:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-03 02:59:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-03 02:59:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-03 02:59:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-03 02:59:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-03 02:59:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-03 02:59:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-03 02:59:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-03 02:59:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-03 02:59:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-03 02:59:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:59:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:59:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-03 02:59:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-03 02:59:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:59:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:59:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-03 02:59:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:59:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:59:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:59:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:59:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-03 02:59:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:59:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-03 02:59:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-03 02:59:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:59:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-03 02:59:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-03 02:59:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:59:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-03 02:59:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-03 02:59:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-03 02:59:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-03 02:59:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-03 02:59:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-03 02:59:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-03 02:59:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-03 02:59:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-03 02:59:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-03 02:59:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-03 02:59:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-03 02:59:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-03 02:59:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-03 02:59:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:59:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-03 02:59:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-03 02:59:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-03 02:59:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-03 02:59:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-03 02:59:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-03 02:59:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-03 02:59:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-03 02:59:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-03 02:59:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-03 02:59:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-03 02:59:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-03 02:59:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-03 02:59:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-03 02:59:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-03 02:59:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-03 02:59:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-03 02:59:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:59:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-03 02:59:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-03 02:59:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-03 02:59:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:59:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:59:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:59:12,967 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:59:12,967 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-03 02:59:12,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:12 BoogieIcfgContainer [2019-10-03 02:59:12,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:59:12,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:59:12,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:59:12,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:59:12,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:59:10" (1/3) ... [2019-10-03 02:59:12,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702851c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:12, skipping insertion in model container [2019-10-03 02:59:12,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:11" (2/3) ... [2019-10-03 02:59:12,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702851c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:12, skipping insertion in model container [2019-10-03 02:59:12,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:12" (3/3) ... [2019-10-03 02:59:12,980 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2019-10-03 02:59:12,990 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:59:13,002 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:59:13,019 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:59:13,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:59:13,044 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:59:13,044 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:59:13,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:59:13,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:59:13,044 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:59:13,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:59:13,045 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:59:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-10-03 02:59:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-03 02:59:13,081 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:13,082 INFO L411 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] [2019-10-03 02:59:13,085 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2019-10-03 02:59:13,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:13,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:13,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:13,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:13,154 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:13,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:13,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:59:13,423 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:13,429 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:59:13,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:59:13,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:13,447 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 2 states. [2019-10-03 02:59:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:13,491 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2019-10-03 02:59:13,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:59:13,493 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-10-03 02:59:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:13,507 INFO L225 Difference]: With dead ends: 159 [2019-10-03 02:59:13,507 INFO L226 Difference]: Without dead ends: 148 [2019-10-03 02:59:13,509 INFO L640 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 [2019-10-03 02:59:13,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-03 02:59:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-10-03 02:59:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-03 02:59:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2019-10-03 02:59:13,565 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2019-10-03 02:59:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:13,566 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2019-10-03 02:59:13,566 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:59:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2019-10-03 02:59:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-03 02:59:13,570 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:13,570 INFO L411 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] [2019-10-03 02:59:13,570 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:13,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2019-10-03 02:59:13,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:13,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:13,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:13,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:13,574 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:13,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:13,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:59:13,699 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:13,701 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:59:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:59:13,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:59:13,702 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 3 states. [2019-10-03 02:59:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:13,719 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2019-10-03 02:59:13,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:59:13,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-10-03 02:59:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:13,723 INFO L225 Difference]: With dead ends: 139 [2019-10-03 02:59:13,723 INFO L226 Difference]: Without dead ends: 139 [2019-10-03 02:59:13,724 INFO L640 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 [2019-10-03 02:59:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-03 02:59:13,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-10-03 02:59:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-03 02:59:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2019-10-03 02:59:13,738 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2019-10-03 02:59:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:13,739 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2019-10-03 02:59:13,739 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:59:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2019-10-03 02:59:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-03 02:59:13,741 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:13,741 INFO L411 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] [2019-10-03 02:59:13,742 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2019-10-03 02:59:13,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:13,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:13,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:13,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:13,746 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:13,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:13,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:59:13,888 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:13,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:59:13,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:59:13,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:59:13,890 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 7 states. [2019-10-03 02:59:14,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:14,518 INFO L93 Difference]: Finished difference Result 306 states and 368 transitions. [2019-10-03 02:59:14,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:59:14,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-10-03 02:59:14,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:14,523 INFO L225 Difference]: With dead ends: 306 [2019-10-03 02:59:14,523 INFO L226 Difference]: Without dead ends: 306 [2019-10-03 02:59:14,524 INFO L640 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 [2019-10-03 02:59:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2019-10-03 02:59:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 294. [2019-10-03 02:59:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-03 02:59:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2019-10-03 02:59:14,574 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2019-10-03 02:59:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:14,578 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2019-10-03 02:59:14,578 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:59:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2019-10-03 02:59:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-03 02:59:14,584 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:14,585 INFO L411 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] [2019-10-03 02:59:14,585 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2019-10-03 02:59:14,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:14,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:14,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:14,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:14,592 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:59:14,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:14,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:59:14,733 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:14,734 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:59:14,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:59:14,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:59:14,734 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 7 states. [2019-10-03 02:59:15,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:15,593 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2019-10-03 02:59:15,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-03 02:59:15,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-10-03 02:59:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:15,599 INFO L225 Difference]: With dead ends: 478 [2019-10-03 02:59:15,599 INFO L226 Difference]: Without dead ends: 478 [2019-10-03 02:59:15,600 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-03 02:59:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-10-03 02:59:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 424. [2019-10-03 02:59:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-10-03 02:59:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 511 transitions. [2019-10-03 02:59:15,668 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 511 transitions. Word has length 70 [2019-10-03 02:59:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:15,672 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 511 transitions. [2019-10-03 02:59:15,673 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:59:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 511 transitions. [2019-10-03 02:59:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-03 02:59:15,675 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:15,676 INFO L411 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] [2019-10-03 02:59:15,679 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2019-10-03 02:59:15,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:15,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:15,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:15,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:15,689 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:15,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:15,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:59:15,865 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:15,866 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:59:15,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:59:15,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:59:15,866 INFO L87 Difference]: Start difference. First operand 424 states and 511 transitions. Second operand 6 states. [2019-10-03 02:59:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:15,901 INFO L93 Difference]: Finished difference Result 434 states and 521 transitions. [2019-10-03 02:59:15,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 02:59:15,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-03 02:59:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:15,905 INFO L225 Difference]: With dead ends: 434 [2019-10-03 02:59:15,905 INFO L226 Difference]: Without dead ends: 434 [2019-10-03 02:59:15,906 INFO L640 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 [2019-10-03 02:59:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2019-10-03 02:59:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2019-10-03 02:59:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-10-03 02:59:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-10-03 02:59:15,928 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2019-10-03 02:59:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:15,929 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-10-03 02:59:15,929 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:59:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-10-03 02:59:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-03 02:59:15,931 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:15,931 INFO L411 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] [2019-10-03 02:59:15,932 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2019-10-03 02:59:15,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:15,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:15,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:15,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:15,939 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:16,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:16,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-03 02:59:16,060 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:16,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-03 02:59:16,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-03 02:59:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:59:16,061 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 8 states. [2019-10-03 02:59:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:16,096 INFO L93 Difference]: Finished difference Result 448 states and 535 transitions. [2019-10-03 02:59:16,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-03 02:59:16,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-03 02:59:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:16,100 INFO L225 Difference]: With dead ends: 448 [2019-10-03 02:59:16,101 INFO L226 Difference]: Without dead ends: 448 [2019-10-03 02:59:16,101 INFO L640 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 [2019-10-03 02:59:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-10-03 02:59:16,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442. [2019-10-03 02:59:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-10-03 02:59:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2019-10-03 02:59:16,126 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2019-10-03 02:59:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:16,127 INFO L475 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2019-10-03 02:59:16,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-03 02:59:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2019-10-03 02:59:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-03 02:59:16,134 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:16,134 INFO L411 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] [2019-10-03 02:59:16,134 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:16,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:16,135 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2019-10-03 02:59:16,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:16,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:16,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:16,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:16,140 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:16,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:16,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:59:16,251 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:16,252 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:59:16,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:59:16,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:59:16,253 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 4 states. [2019-10-03 02:59:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:16,514 INFO L93 Difference]: Finished difference Result 1002 states and 1245 transitions. [2019-10-03 02:59:16,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:59:16,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-10-03 02:59:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:16,521 INFO L225 Difference]: With dead ends: 1002 [2019-10-03 02:59:16,522 INFO L226 Difference]: Without dead ends: 1002 [2019-10-03 02:59:16,522 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:59:16,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2019-10-03 02:59:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 985. [2019-10-03 02:59:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2019-10-03 02:59:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1208 transitions. [2019-10-03 02:59:16,571 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1208 transitions. Word has length 93 [2019-10-03 02:59:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:16,572 INFO L475 AbstractCegarLoop]: Abstraction has 985 states and 1208 transitions. [2019-10-03 02:59:16,572 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:59:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1208 transitions. [2019-10-03 02:59:16,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-03 02:59:16,574 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:16,574 INFO L411 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] [2019-10-03 02:59:16,575 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:16,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:16,575 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2019-10-03 02:59:16,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:16,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:16,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:16,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:16,578 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:59:16,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:16,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-03 02:59:16,836 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:16,837 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-03 02:59:16,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-03 02:59:16,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:59:16,838 INFO L87 Difference]: Start difference. First operand 985 states and 1208 transitions. Second operand 9 states. [2019-10-03 02:59:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:18,096 INFO L93 Difference]: Finished difference Result 1929 states and 2367 transitions. [2019-10-03 02:59:18,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-03 02:59:18,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-10-03 02:59:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:18,108 INFO L225 Difference]: With dead ends: 1929 [2019-10-03 02:59:18,109 INFO L226 Difference]: Without dead ends: 1929 [2019-10-03 02:59:18,109 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-10-03 02:59:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2019-10-03 02:59:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1696. [2019-10-03 02:59:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2019-10-03 02:59:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2047 transitions. [2019-10-03 02:59:18,196 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2047 transitions. Word has length 97 [2019-10-03 02:59:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:18,196 INFO L475 AbstractCegarLoop]: Abstraction has 1696 states and 2047 transitions. [2019-10-03 02:59:18,196 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-03 02:59:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2047 transitions. [2019-10-03 02:59:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-03 02:59:18,205 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:18,206 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-03 02:59:18,206 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2019-10-03 02:59:18,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:18,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:18,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:18,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:18,210 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-03 02:59:18,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:59:18,413 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:59:18,414 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2019-10-03 02:59:18,417 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [184], [190], [198], [199], [209], [210], [211], [212], [213], [215], [220], [222], [223], [227], [230], [234], [240], [271], [275], [278], [281], [283], [286], [293], [296], [299], [303], [304], [307], [308], [309], [311], [312], [313], [315], [318], [320], [323], [326], [335], [337], [338], [339], [433], [434], [444], [452], [453], [454], [455], [456], [457], [458], [459], [460], [494], [495], [496], [497], [500], [501], [502], [503], [504], [505], [512], [513], [516], [517], [518], [519], [520], [521], [522], [523], [524], [525], [530], [531], [532], [533], [536], [537], [538], [539], [540], [541], [542], [543], [544], [548], [549], [550], [558], [559], [560] [2019-10-03 02:59:18,467 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:59:18,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:59:18,579 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:59:18,580 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-10-03 02:59:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:18,586 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:59:18,687 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:59:18,688 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:59:18,698 INFO L420 sIntCurrentIteration]: We unified 158 AI predicates to 158 [2019-10-03 02:59:18,698 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:59:18,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:59:18,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-10-03 02:59:18,700 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:18,701 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:59:18,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:59:18,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:18,702 INFO L87 Difference]: Start difference. First operand 1696 states and 2047 transitions. Second operand 2 states. [2019-10-03 02:59:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:18,703 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:59:18,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:59:18,703 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 159 [2019-10-03 02:59:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:18,703 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:59:18,704 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:59:18,704 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:59:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:59:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:59:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:59:18,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 159 [2019-10-03 02:59:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:18,705 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:59:18,705 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:59:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:59:18,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:59:18,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:59:18 BoogieIcfgContainer [2019-10-03 02:59:18,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:59:18,714 INFO L168 Benchmark]: Toolchain (without parser) took 7833.25 ms. Allocated memory was 138.9 MB in the beginning and 332.4 MB in the end (delta: 193.5 MB). Free memory was 86.3 MB in the beginning and 250.6 MB in the end (delta: -164.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:18,716 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 105.1 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:59:18,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.55 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 86.1 MB in the beginning and 163.8 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:18,720 INFO L168 Benchmark]: Boogie Preprocessor took 97.93 ms. Allocated memory is still 198.7 MB. Free memory was 163.8 MB in the beginning and 159.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:18,722 INFO L168 Benchmark]: RCFGBuilder took 1309.28 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 159.4 MB in the beginning and 186.6 MB in the end (delta: -27.2 MB). Peak memory consumption was 91.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:18,728 INFO L168 Benchmark]: TraceAbstraction took 5740.45 ms. Allocated memory was 221.8 MB in the beginning and 332.4 MB in the end (delta: 110.6 MB). Free memory was 185.2 MB in the beginning and 250.6 MB in the end (delta: -65.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:18,735 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 105.1 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.55 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 86.1 MB in the beginning and 163.8 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.93 ms. Allocated memory is still 198.7 MB. Free memory was 163.8 MB in the beginning and 159.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1309.28 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 159.4 MB in the beginning and 186.6 MB in the end (delta: -27.2 MB). Peak memory consumption was 91.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5740.45 ms. Allocated memory was 221.8 MB in the beginning and 332.4 MB in the end (delta: 110.6 MB). Free memory was 185.2 MB in the beginning and 250.6 MB in the end (delta: -65.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 516]: 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 44 procedures, 255 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1522 SDtfs, 1084 SDslu, 3468 SDs, 0 SdLazy, 1726 SolverSat, 291 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1696occurred in iteration=8, 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, 0.8481012658227848 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 789 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 124242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 60/67 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...