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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:40,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:40,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:40,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:40,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:40,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:40,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:40,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:40,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:40,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:40,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:40,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:40,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:40,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:40,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:40,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:40,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:40,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:40,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:40,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:40,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:40,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:40,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:40,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:40,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:40,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:40,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:40,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:40,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:40,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:40,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:40,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:40,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:40,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:40,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:40,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:40,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:40,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:40,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:40,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:40,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:40,930 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 13:31:40,969 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:40,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:40,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:40,970 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:40,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:40,971 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:40,971 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:40,971 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:40,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:40,972 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:40,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:40,973 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:40,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:40,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:40,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:40,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:40,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:40,974 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:40,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:40,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:40,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:40,975 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:40,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:40,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:40,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:40,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:40,976 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:40,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:40,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:40,977 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:41,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:41,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:41,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:41,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:41,051 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:41,052 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2019-09-20 13:31:41,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde607bdf/ef4e6bdbdeeb43ceaa11f6ea8f835f1d/FLAGd5a2a9f82 [2019-09-20 13:31:41,672 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:41,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2019-09-20 13:31:41,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde607bdf/ef4e6bdbdeeb43ceaa11f6ea8f835f1d/FLAGd5a2a9f82 [2019-09-20 13:31:41,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde607bdf/ef4e6bdbdeeb43ceaa11f6ea8f835f1d [2019-09-20 13:31:42,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:42,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:42,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:42,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:42,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:42,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:41" (1/1) ... [2019-09-20 13:31:42,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d1e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42, skipping insertion in model container [2019-09-20 13:31:42,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:41" (1/1) ... [2019-09-20 13:31:42,029 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:42,085 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:42,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:42,563 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:42,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:42,730 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:42,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42 WrapperNode [2019-09-20 13:31:42,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:42,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:42,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:42,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:42,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:42,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:42,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:42,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:42,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (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 13:31:42,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:42,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:42,908 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:42,908 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:42,909 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:42,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:44,201 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:44,202 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:44,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:44 BoogieIcfgContainer [2019-09-20 13:31:44,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:44,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:44,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:44,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:44,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:41" (1/3) ... [2019-09-20 13:31:44,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd74f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:44, skipping insertion in model container [2019-09-20 13:31:44,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (2/3) ... [2019-09-20 13:31:44,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd74f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:44, skipping insertion in model container [2019-09-20 13:31:44,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:44" (3/3) ... [2019-09-20 13:31:44,216 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2019-09-20 13:31:44,228 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:44,238 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:44,256 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:44,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:44,299 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:44,300 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:44,301 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:44,301 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:44,301 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:44,301 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:44,302 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-09-20 13:31:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:44,336 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:44,338 INFO L407 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] [2019-09-20 13:31:44,341 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash 479094946, now seen corresponding path program 1 times [2019-09-20 13:31:44,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:44,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:44,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,397 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:44,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:44,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:44,749 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,757 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:44,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:44,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:44,777 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 2 states. [2019-09-20 13:31:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,808 INFO L93 Difference]: Finished difference Result 164 states and 190 transitions. [2019-09-20 13:31:44,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:44,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,825 INFO L225 Difference]: With dead ends: 164 [2019-09-20 13:31:44,825 INFO L226 Difference]: Without dead ends: 153 [2019-09-20 13:31:44,827 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 13:31:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-20 13:31:44,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-20 13:31:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-20 13:31:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2019-09-20 13:31:44,883 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 59 [2019-09-20 13:31:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,884 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2019-09-20 13:31:44,884 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2019-09-20 13:31:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:44,888 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:44,888 INFO L407 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] [2019-09-20 13:31:44,889 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,889 INFO L82 PathProgramCache]: Analyzing trace with hash -259634487, now seen corresponding path program 1 times [2019-09-20 13:31:44,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:44,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:44,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,893 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:45,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:45,032 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,035 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:45,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:45,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:45,036 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand 3 states. [2019-09-20 13:31:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,072 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2019-09-20 13:31:45,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:45,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,076 INFO L225 Difference]: With dead ends: 144 [2019-09-20 13:31:45,077 INFO L226 Difference]: Without dead ends: 144 [2019-09-20 13:31:45,077 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 13:31:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-20 13:31:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-09-20 13:31:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-20 13:31:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 166 transitions. [2019-09-20 13:31:45,093 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 166 transitions. Word has length 60 [2019-09-20 13:31:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,093 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 166 transitions. [2019-09-20 13:31:45,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 166 transitions. [2019-09-20 13:31:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:31:45,096 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,097 INFO L407 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] [2019-09-20 13:31:45,097 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1126861649, now seen corresponding path program 1 times [2019-09-20 13:31:45,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,100 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:45,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:45,234 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,235 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:45,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:45,236 INFO L87 Difference]: Start difference. First operand 144 states and 166 transitions. Second operand 7 states. [2019-09-20 13:31:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,584 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2019-09-20 13:31:45,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:45,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:31:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,587 INFO L225 Difference]: With dead ends: 144 [2019-09-20 13:31:45,587 INFO L226 Difference]: Without dead ends: 144 [2019-09-20 13:31:45,588 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 13:31:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-20 13:31:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-09-20 13:31:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-20 13:31:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 165 transitions. [2019-09-20 13:31:45,602 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 165 transitions. Word has length 64 [2019-09-20 13:31:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,604 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 165 transitions. [2019-09-20 13:31:45,604 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 165 transitions. [2019-09-20 13:31:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-09-20 13:31:45,607 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,607 INFO L407 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] [2019-09-20 13:31:45,608 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1745445590, now seen corresponding path program 1 times [2019-09-20 13:31:45,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,612 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:45,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:31:45,786 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,787 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:31:45,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:31:45,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:31:45,788 INFO L87 Difference]: Start difference. First operand 144 states and 165 transitions. Second operand 5 states. [2019-09-20 13:31:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:46,344 INFO L93 Difference]: Finished difference Result 247 states and 286 transitions. [2019-09-20 13:31:46,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:46,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-09-20 13:31:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:46,349 INFO L225 Difference]: With dead ends: 247 [2019-09-20 13:31:46,349 INFO L226 Difference]: Without dead ends: 247 [2019-09-20 13:31:46,349 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 13:31:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2019-09-20 13:31:46,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 229. [2019-09-20 13:31:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-09-20 13:31:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 262 transitions. [2019-09-20 13:31:46,388 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 262 transitions. Word has length 77 [2019-09-20 13:31:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:46,388 INFO L475 AbstractCegarLoop]: Abstraction has 229 states and 262 transitions. [2019-09-20 13:31:46,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:31:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 262 transitions. [2019-09-20 13:31:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-20 13:31:46,394 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:46,397 INFO L407 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] [2019-09-20 13:31:46,398 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:46,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1775922839, now seen corresponding path program 1 times [2019-09-20 13:31:46,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:46,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:46,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,402 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:46,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:46,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:46,559 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:46,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:46,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:46,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:46,561 INFO L87 Difference]: Start difference. First operand 229 states and 262 transitions. Second operand 7 states. [2019-09-20 13:31:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:47,382 INFO L93 Difference]: Finished difference Result 246 states and 286 transitions. [2019-09-20 13:31:47,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:47,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2019-09-20 13:31:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:47,385 INFO L225 Difference]: With dead ends: 246 [2019-09-20 13:31:47,385 INFO L226 Difference]: Without dead ends: 246 [2019-09-20 13:31:47,386 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2019-09-20 13:31:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 228. [2019-09-20 13:31:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2019-09-20 13:31:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 259 transitions. [2019-09-20 13:31:47,400 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 259 transitions. Word has length 91 [2019-09-20 13:31:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,401 INFO L475 AbstractCegarLoop]: Abstraction has 228 states and 259 transitions. [2019-09-20 13:31:47,401 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 259 transitions. [2019-09-20 13:31:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:47,403 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,403 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:47,403 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1230791863, now seen corresponding path program 1 times [2019-09-20 13:31:47,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,407 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:47,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:47,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:47,501 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:47,504 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:47,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:47,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:47,504 INFO L87 Difference]: Start difference. First operand 228 states and 259 transitions. Second operand 6 states. [2019-09-20 13:31:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:47,536 INFO L93 Difference]: Finished difference Result 235 states and 266 transitions. [2019-09-20 13:31:47,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:47,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-20 13:31:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:47,552 INFO L225 Difference]: With dead ends: 235 [2019-09-20 13:31:47,553 INFO L226 Difference]: Without dead ends: 235 [2019-09-20 13:31:47,553 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:47,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-09-20 13:31:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-09-20 13:31:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-20 13:31:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 264 transitions. [2019-09-20 13:31:47,573 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 264 transitions. Word has length 107 [2019-09-20 13:31:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,573 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 264 transitions. [2019-09-20 13:31:47,574 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 264 transitions. [2019-09-20 13:31:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:47,576 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,577 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:47,577 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,577 INFO L82 PathProgramCache]: Analyzing trace with hash 697480839, now seen corresponding path program 1 times [2019-09-20 13:31:47,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,583 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:47,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:47,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:47,705 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:47,706 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:47,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:47,707 INFO L87 Difference]: Start difference. First operand 233 states and 264 transitions. Second operand 8 states. [2019-09-20 13:31:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:47,741 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2019-09-20 13:31:47,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:47,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-20 13:31:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:47,747 INFO L225 Difference]: With dead ends: 240 [2019-09-20 13:31:47,748 INFO L226 Difference]: Without dead ends: 240 [2019-09-20 13:31:47,748 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2019-09-20 13:31:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 237. [2019-09-20 13:31:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2019-09-20 13:31:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2019-09-20 13:31:47,766 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 107 [2019-09-20 13:31:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,767 INFO L475 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2019-09-20 13:31:47,767 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2019-09-20 13:31:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:47,771 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,772 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:47,772 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash 456940710, now seen corresponding path program 1 times [2019-09-20 13:31:47,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,815 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:47,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:47,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:47,928 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:47,929 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:47,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:47,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:47,930 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand 4 states. [2019-09-20 13:31:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:48,184 INFO L93 Difference]: Finished difference Result 464 states and 547 transitions. [2019-09-20 13:31:48,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:48,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-20 13:31:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:48,188 INFO L225 Difference]: With dead ends: 464 [2019-09-20 13:31:48,188 INFO L226 Difference]: Without dead ends: 464 [2019-09-20 13:31:48,189 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-09-20 13:31:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 455. [2019-09-20 13:31:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2019-09-20 13:31:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 530 transitions. [2019-09-20 13:31:48,211 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 530 transitions. Word has length 107 [2019-09-20 13:31:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:48,211 INFO L475 AbstractCegarLoop]: Abstraction has 455 states and 530 transitions. [2019-09-20 13:31:48,212 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 530 transitions. [2019-09-20 13:31:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-20 13:31:48,213 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:48,214 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:48,214 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:48,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1562894580, now seen corresponding path program 1 times [2019-09-20 13:31:48,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:48,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:48,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:48,217 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:48,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:48,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:48,363 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:48,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:48,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:48,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:48,364 INFO L87 Difference]: Start difference. First operand 455 states and 530 transitions. Second operand 9 states. [2019-09-20 13:31:49,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:49,549 INFO L93 Difference]: Finished difference Result 835 states and 975 transitions. [2019-09-20 13:31:49,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:49,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-20 13:31:49,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:49,554 INFO L225 Difference]: With dead ends: 835 [2019-09-20 13:31:49,554 INFO L226 Difference]: Without dead ends: 835 [2019-09-20 13:31:49,555 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2019-09-20 13:31:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 762. [2019-09-20 13:31:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-09-20 13:31:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 877 transitions. [2019-09-20 13:31:49,585 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 877 transitions. Word has length 111 [2019-09-20 13:31:49,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:49,586 INFO L475 AbstractCegarLoop]: Abstraction has 762 states and 877 transitions. [2019-09-20 13:31:49,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 877 transitions. [2019-09-20 13:31:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-20 13:31:49,589 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:49,589 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:49,589 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:49,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash 903450751, now seen corresponding path program 1 times [2019-09-20 13:31:49,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:49,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:49,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,592 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:31:49,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:49,740 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:49,741 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2019-09-20 13:31:49,743 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [85], [88], [92], [93], [94], [110], [114], [115], [116], [119], [121], [127], [131], [134], [135], [136], [145], [149], [153], [156], [159], [161], [167], [169], [172], [187], [188], [189], [190], [200], [202], [207], [210], [211], [212], [213], [215], [220], [222], [223], [227], [230], [234], [240], [267], [268], [271], [275], [276], [279], [281], [284], [291], [294], [297], [301], [302], [305], [306], [307], [309], [310], [311], [313], [316], [318], [321], [324], [333], [335], [336], [337], [361], [363], [364], [431], [432], [442], [450], [451], [452], [453], [454], [455], [456], [457], [458], [490], [491], [492], [493], [496], [497], [498], [499], [500], [501], [504], [505], [508], [509], [510], [511], [512], [513], [514], [515], [516], [517], [518], [519], [520], [521], [526], [527], [528], [529], [532], [533], [534], [535], [536], [537], [538], [539], [540], [544], [545], [546], [548], [549], [554], [555], [556] [2019-09-20 13:31:49,803 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:49,804 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:49,896 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:49,898 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 70 root evaluator evaluations with a maximum evaluation depth of 0. Performed 70 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:31:49,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:49,903 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:49,998 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:49,999 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:50,005 INFO L420 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2019-09-20 13:31:50,005 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:50,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:50,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:50,008 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:50,008 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:50,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:50,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:50,009 INFO L87 Difference]: Start difference. First operand 762 states and 877 transitions. Second operand 2 states. [2019-09-20 13:31:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:50,009 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:50,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:50,010 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 172 [2019-09-20 13:31:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:50,010 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:50,013 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:50,014 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 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 13:31:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:50,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2019-09-20 13:31:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:50,016 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:50,016 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:50,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:50,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:50 BoogieIcfgContainer [2019-09-20 13:31:50,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:50,023 INFO L168 Benchmark]: Toolchain (without parser) took 8011.27 ms. Allocated memory was 134.2 MB in the beginning and 318.8 MB in the end (delta: 184.5 MB). Free memory was 88.6 MB in the beginning and 140.0 MB in the end (delta: -51.5 MB). Peak memory consumption was 133.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:50,024 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 134.2 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:50,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.19 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 88.4 MB in the beginning and 163.2 MB in the end (delta: -74.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:50,026 INFO L168 Benchmark]: Boogie Preprocessor took 89.28 ms. Allocated memory is still 199.8 MB. Free memory was 163.2 MB in the beginning and 158.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:50,026 INFO L168 Benchmark]: RCFGBuilder took 1383.30 ms. Allocated memory was 199.8 MB in the beginning and 226.5 MB in the end (delta: 26.7 MB). Free memory was 158.9 MB in the beginning and 187.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:50,027 INFO L168 Benchmark]: TraceAbstraction took 5814.50 ms. Allocated memory was 226.5 MB in the beginning and 318.8 MB in the end (delta: 92.3 MB). Free memory was 186.0 MB in the beginning and 140.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 138.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:50,031 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 134.2 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.19 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 88.4 MB in the beginning and 163.2 MB in the end (delta: -74.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.28 ms. Allocated memory is still 199.8 MB. Free memory was 163.2 MB in the beginning and 158.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1383.30 ms. Allocated memory was 199.8 MB in the beginning and 226.5 MB in the end (delta: 26.7 MB). Free memory was 158.9 MB in the beginning and 187.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5814.50 ms. Allocated memory was 226.5 MB in the beginning and 318.8 MB in the end (delta: 92.3 MB). Free memory was 186.0 MB in the beginning and 140.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 138.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 252 locations, 1 error locations. SAFE Result, 5.7s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1635 SDtfs, 1191 SDslu, 3249 SDs, 0 SdLazy, 1851 SolverSat, 434 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=762occurred in iteration=9, 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, 0.8245614035087719 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 123 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 955 NumberOfCodeBlocks, 955 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 945 ConstructedInterpolants, 0 QuantifiedInterpolants, 161929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 62/69 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...