java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:49:43,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:49:43,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:49:43,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:49:43,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:49:43,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:49:43,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:49:43,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:49:43,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:49:43,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:49:43,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:49:43,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:49:43,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:49:43,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:49:43,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:49:43,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:49:43,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:49:43,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:49:43,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:49:43,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:49:43,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:49:43,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:49:43,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:49:43,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:49:43,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:49:43,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:49:43,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:49:43,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:49:43,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:49:43,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:49:43,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:49:43,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:49:43,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:49:43,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:49:43,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:49:43,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:49:43,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:49:43,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:49:43,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:49:43,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:49:43,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:49:43,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:49:43,117 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:49:43,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:49:43,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:49:43,118 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:49:43,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:49:43,119 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:49:43,119 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:49:43,119 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:49:43,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:49:43,120 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:49:43,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:49:43,121 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:49:43,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:49:43,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:49:43,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:49:43,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:49:43,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:49:43,122 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:49:43,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:49:43,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:49:43,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:49:43,123 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:49:43,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:49:43,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:49:43,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:49:43,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:49:43,125 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:49:43,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:49:43,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:49:43,126 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:49:43,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:49:43,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:49:43,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:49:43,193 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:49:43,194 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:49:43,195 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-09-10 02:49:43,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81028b7b0/5415024e9e274bca9da732e7fdd9dc57/FLAG24e4023c7 [2019-09-10 02:49:43,783 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:49:43,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-09-10 02:49:43,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81028b7b0/5415024e9e274bca9da732e7fdd9dc57/FLAG24e4023c7 [2019-09-10 02:49:44,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81028b7b0/5415024e9e274bca9da732e7fdd9dc57 [2019-09-10 02:49:44,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:49:44,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:49:44,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:49:44,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:49:44,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:49:44,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff4ec7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44, skipping insertion in model container [2019-09-10 02:49:44,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,077 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:49:44,135 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:49:44,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:49:44,596 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:49:44,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:49:44,746 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:49:44,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44 WrapperNode [2019-09-10 02:49:44,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:49:44,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:49:44,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:49:44,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:49:44,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... [2019-09-10 02:49:44,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:49:44,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:49:44,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:49:44,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:49:44,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:49:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:49:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:49:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:49:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:49:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:49:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:49:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:49:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:49:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:49:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:49:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:49:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:49:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:49:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:49:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:49:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:49:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-10 02:49:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:49:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:49:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:49:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:49:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:49:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:49:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:49:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:49:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:49:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:49:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-10 02:49:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:49:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:49:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:49:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:49:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:49:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:49:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-10 02:49:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:49:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:49:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:49:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:49:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:49:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:49:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:49:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:49:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:49:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:49:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:49:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:49:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:49:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:49:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:49:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:49:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:49:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:49:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:49:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:49:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:49:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:49:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:49:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:49:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:49:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:49:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:49:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:49:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:49:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:49:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:49:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:49:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:49:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-10 02:49:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:49:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:49:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:49:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:49:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:49:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:49:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:49:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:49:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:49:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:49:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:49:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:49:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:49:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:49:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:49:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-10 02:49:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-10 02:49:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:49:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:49:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:49:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:49:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:49:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:49:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:49:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:49:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:49:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:49:46,127 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:49:46,127 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:49:46,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:49:46 BoogieIcfgContainer [2019-09-10 02:49:46,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:49:46,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:49:46,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:49:46,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:49:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:49:44" (1/3) ... [2019-09-10 02:49:46,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60539d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:49:46, skipping insertion in model container [2019-09-10 02:49:46,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:44" (2/3) ... [2019-09-10 02:49:46,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60539d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:49:46, skipping insertion in model container [2019-09-10 02:49:46,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:49:46" (3/3) ... [2019-09-10 02:49:46,137 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product57.cil.c [2019-09-10 02:49:46,149 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:49:46,160 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:49:46,178 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:49:46,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:49:46,219 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:49:46,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:49:46,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:49:46,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:49:46,220 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:49:46,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:49:46,220 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:49:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-09-10 02:49:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-10 02:49:46,256 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:46,258 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:46,260 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:46,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1038310593, now seen corresponding path program 1 times [2019-09-10 02:49:46,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:46,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:46,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:46,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:46,326 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:46,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:46,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:49:46,606 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:46,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:49:46,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:49:46,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:46,630 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-09-10 02:49:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:46,677 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2019-09-10 02:49:46,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:49:46,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-10 02:49:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:46,699 INFO L225 Difference]: With dead ends: 157 [2019-09-10 02:49:46,699 INFO L226 Difference]: Without dead ends: 146 [2019-09-10 02:49:46,701 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:46,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-10 02:49:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-10 02:49:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-10 02:49:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2019-09-10 02:49:46,757 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 52 [2019-09-10 02:49:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:46,758 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2019-09-10 02:49:46,758 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:49:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2019-09-10 02:49:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-10 02:49:46,763 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:46,763 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:46,764 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:46,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2043760100, now seen corresponding path program 1 times [2019-09-10 02:49:46,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:46,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:46,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:46,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:46,766 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:46,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:46,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:49:46,962 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:46,963 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:49:46,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:49:46,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:49:46,964 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 3 states. [2019-09-10 02:49:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:46,994 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2019-09-10 02:49:46,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:49:46,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-10 02:49:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:46,999 INFO L225 Difference]: With dead ends: 137 [2019-09-10 02:49:47,000 INFO L226 Difference]: Without dead ends: 137 [2019-09-10 02:49:47,001 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:49:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-09-10 02:49:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-09-10 02:49:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-10 02:49:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-09-10 02:49:47,017 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 53 [2019-09-10 02:49:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:47,017 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-09-10 02:49:47,018 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:49:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-09-10 02:49:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-10 02:49:47,020 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:47,021 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:47,021 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:47,021 INFO L82 PathProgramCache]: Analyzing trace with hash -69539003, now seen corresponding path program 1 times [2019-09-10 02:49:47,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:47,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:47,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,023 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:47,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:47,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:49:47,211 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:47,212 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:49:47,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:49:47,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:49:47,215 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 7 states. [2019-09-10 02:49:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:47,573 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2019-09-10 02:49:47,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:49:47,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-10 02:49:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:47,577 INFO L225 Difference]: With dead ends: 137 [2019-09-10 02:49:47,577 INFO L226 Difference]: Without dead ends: 137 [2019-09-10 02:49:47,578 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:49:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-09-10 02:49:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-09-10 02:49:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-10 02:49:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2019-09-10 02:49:47,590 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 57 [2019-09-10 02:49:47,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:47,591 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2019-09-10 02:49:47,591 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:49:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2019-09-10 02:49:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 02:49:47,594 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:47,595 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:47,595 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:47,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:47,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1758854223, now seen corresponding path program 1 times [2019-09-10 02:49:47,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:47,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:47,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,597 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:47,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:47,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:49:47,811 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:47,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:49:47,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:49:47,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:47,812 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand 5 states. [2019-09-10 02:49:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:48,370 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2019-09-10 02:49:48,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:49:48,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-09-10 02:49:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:48,374 INFO L225 Difference]: With dead ends: 245 [2019-09-10 02:49:48,374 INFO L226 Difference]: Without dead ends: 245 [2019-09-10 02:49:48,375 INFO L628 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 [2019-09-10 02:49:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2019-09-10 02:49:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 227. [2019-09-10 02:49:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-09-10 02:49:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2019-09-10 02:49:48,395 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 70 [2019-09-10 02:49:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:48,395 INFO L475 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2019-09-10 02:49:48,395 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:49:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2019-09-10 02:49:48,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 02:49:48,398 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:48,398 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:48,398 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:48,399 INFO L82 PathProgramCache]: Analyzing trace with hash 19039556, now seen corresponding path program 1 times [2019-09-10 02:49:48,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:48,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:48,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,400 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:48,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:48,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:49:48,531 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:48,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:49:48,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:49:48,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:49:48,535 INFO L87 Difference]: Start difference. First operand 227 states and 259 transitions. Second operand 6 states. [2019-09-10 02:49:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:48,734 INFO L93 Difference]: Finished difference Result 353 states and 409 transitions. [2019-09-10 02:49:48,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:49:48,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2019-09-10 02:49:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:48,743 INFO L225 Difference]: With dead ends: 353 [2019-09-10 02:49:48,743 INFO L226 Difference]: Without dead ends: 353 [2019-09-10 02:49:48,745 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:49:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2019-09-10 02:49:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2019-09-10 02:49:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-09-10 02:49:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 405 transitions. [2019-09-10 02:49:48,782 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 405 transitions. Word has length 84 [2019-09-10 02:49:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:48,783 INFO L475 AbstractCegarLoop]: Abstraction has 349 states and 405 transitions. [2019-09-10 02:49:48,783 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:49:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 405 transitions. [2019-09-10 02:49:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-10 02:49:48,786 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:48,786 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:48,786 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:48,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1361015554, now seen corresponding path program 1 times [2019-09-10 02:49:48,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:48,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:48,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,788 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:48,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:48,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:49:48,930 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:48,931 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:49:48,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:49:48,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:49:48,932 INFO L87 Difference]: Start difference. First operand 349 states and 405 transitions. Second operand 6 states. [2019-09-10 02:49:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:49,162 INFO L93 Difference]: Finished difference Result 547 states and 650 transitions. [2019-09-10 02:49:49,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:49:49,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2019-09-10 02:49:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:49,167 INFO L225 Difference]: With dead ends: 547 [2019-09-10 02:49:49,167 INFO L226 Difference]: Without dead ends: 547 [2019-09-10 02:49:49,168 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:49:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-09-10 02:49:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 529. [2019-09-10 02:49:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2019-09-10 02:49:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 627 transitions. [2019-09-10 02:49:49,210 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 627 transitions. Word has length 88 [2019-09-10 02:49:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:49,210 INFO L475 AbstractCegarLoop]: Abstraction has 529 states and 627 transitions. [2019-09-10 02:49:49,211 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:49:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 627 transitions. [2019-09-10 02:49:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-10 02:49:49,213 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:49,214 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:49,214 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:49,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2011268159, now seen corresponding path program 1 times [2019-09-10 02:49:49,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:49,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:49,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:49,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:49,218 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:49,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:49,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:49:49,305 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:49,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:49:49,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:49:49,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:49,309 INFO L87 Difference]: Start difference. First operand 529 states and 627 transitions. Second operand 5 states. [2019-09-10 02:49:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:49,332 INFO L93 Difference]: Finished difference Result 539 states and 637 transitions. [2019-09-10 02:49:49,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:49:49,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2019-09-10 02:49:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:49,336 INFO L225 Difference]: With dead ends: 539 [2019-09-10 02:49:49,337 INFO L226 Difference]: Without dead ends: 539 [2019-09-10 02:49:49,337 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-09-10 02:49:49,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 533. [2019-09-10 02:49:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-09-10 02:49:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 630 transitions. [2019-09-10 02:49:49,358 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 630 transitions. Word has length 88 [2019-09-10 02:49:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:49,359 INFO L475 AbstractCegarLoop]: Abstraction has 533 states and 630 transitions. [2019-09-10 02:49:49,359 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:49:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 630 transitions. [2019-09-10 02:49:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-10 02:49:49,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:49,361 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:49,362 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:49,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1167262657, now seen corresponding path program 1 times [2019-09-10 02:49:49,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:49,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:49,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:49,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:49,364 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:49:49,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:49,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-10 02:49:49,502 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:49,503 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-10 02:49:49,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-10 02:49:49,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:49:49,506 INFO L87 Difference]: Start difference. First operand 533 states and 630 transitions. Second operand 9 states. [2019-09-10 02:49:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:49,566 INFO L93 Difference]: Finished difference Result 550 states and 653 transitions. [2019-09-10 02:49:49,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 02:49:49,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2019-09-10 02:49:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:49,571 INFO L225 Difference]: With dead ends: 550 [2019-09-10 02:49:49,572 INFO L226 Difference]: Without dead ends: 550 [2019-09-10 02:49:49,572 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:49:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2019-09-10 02:49:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 540. [2019-09-10 02:49:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-09-10 02:49:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 637 transitions. [2019-09-10 02:49:49,595 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 637 transitions. Word has length 88 [2019-09-10 02:49:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:49,596 INFO L475 AbstractCegarLoop]: Abstraction has 540 states and 637 transitions. [2019-09-10 02:49:49,596 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-10 02:49:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 637 transitions. [2019-09-10 02:49:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-10 02:49:49,600 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:49,600 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:49,600 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:49,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1269276973, now seen corresponding path program 1 times [2019-09-10 02:49:49,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:49,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:49,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:49,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:49,602 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:49:49,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:49:49,774 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:49:49,775 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 101 with the following transitions: [2019-09-10 02:49:49,788 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [161], [167], [169], [172], [200], [202], [205], [210], [211], [212], [213], [215], [220], [222], [223], [224], [225], [231], [235], [275], [278], [280], [283], [293], [296], [300], [301], [304], [305], [306], [329], [331], [332], [399], [400], [410], [412], [417], [419], [422], [424], [429], [436], [444], [445], [446], [447], [448], [449], [450], [451], [452], [492], [493], [494], [495], [498], [502], [503], [506], [507], [510], [511], [512], [518], [519], [520], [521], [528], [530], [531], [536], [537], [538], [539], [540], [541], [542], [544], [545], [546] [2019-09-10 02:49:49,839 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:49:49,839 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:49:49,933 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:49:49,935 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-10 02:49:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:49,941 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:49:50,030 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:49:50,030 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:49:50,034 INFO L420 sIntCurrentIteration]: We unified 99 AI predicates to 99 [2019-09-10 02:49:50,034 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:49:50,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:49:50,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-10 02:49:50,037 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:50,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:49:50,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:49:50,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:50,039 INFO L87 Difference]: Start difference. First operand 540 states and 637 transitions. Second operand 2 states. [2019-09-10 02:49:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:50,041 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:49:50,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:49:50,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 100 [2019-09-10 02:49:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:50,041 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:49:50,041 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:49:50,042 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:49:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:49:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:49:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:49:50,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2019-09-10 02:49:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:50,044 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:49:50,044 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:49:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:49:50,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:49:50,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:49:50 BoogieIcfgContainer [2019-09-10 02:49:50,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:49:50,055 INFO L168 Benchmark]: Toolchain (without parser) took 5990.76 ms. Allocated memory was 136.3 MB in the beginning and 304.1 MB in the end (delta: 167.8 MB). Free memory was 91.2 MB in the beginning and 227.2 MB in the end (delta: -136.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:50,057 INFO L168 Benchmark]: CDTParser took 1.06 ms. Allocated memory is still 136.3 MB. Free memory was 110.9 MB in the beginning and 110.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:49:50,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.98 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 91.0 MB in the beginning and 166.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:50,063 INFO L168 Benchmark]: Boogie Preprocessor took 94.05 ms. Allocated memory is still 201.9 MB. Free memory was 166.3 MB in the beginning and 162.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:50,069 INFO L168 Benchmark]: RCFGBuilder took 1287.66 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 162.0 MB in the beginning and 192.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:50,074 INFO L168 Benchmark]: TraceAbstraction took 3919.99 ms. Allocated memory was 232.8 MB in the beginning and 304.1 MB in the end (delta: 71.3 MB). Free memory was 191.2 MB in the beginning and 227.2 MB in the end (delta: -36.0 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:50,081 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06 ms. Allocated memory is still 136.3 MB. Free memory was 110.9 MB in the beginning and 110.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.98 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 91.0 MB in the beginning and 166.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.05 ms. Allocated memory is still 201.9 MB. Free memory was 166.3 MB in the beginning and 162.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1287.66 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 162.0 MB in the beginning and 192.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3919.99 ms. Allocated memory was 232.8 MB in the beginning and 304.1 MB in the end (delta: 71.3 MB). Free memory was 191.2 MB in the beginning and 227.2 MB in the end (delta: -36.0 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 595]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. SAFE Result, 3.8s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1372 SDtfs, 597 SDslu, 3432 SDs, 0 SdLazy, 656 SolverSat, 156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=540occurred 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, 1.1313131313131313 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 56 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 680 NumberOfCodeBlocks, 680 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 671 ConstructedInterpolants, 0 QuantifiedInterpolants, 84908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...