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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:49:41,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:49:41,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:49:41,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:49:41,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:49:41,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:49:41,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:49:41,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:49:41,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:49:41,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:49:41,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:49:41,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:49:41,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:49:41,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:49:41,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:49:41,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:49:41,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:49:41,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:49:41,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:49:41,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:49:41,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:49:41,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:49:41,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:49:41,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:49:41,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:49:41,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:49:41,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:49:41,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:49:41,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:49:41,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:49:41,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:49:41,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:49:41,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:49:41,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:49:41,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:49:41,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:49:41,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:49:41,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:49:41,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:49:41,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:49:41,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:49:41,796 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 02:49:41,819 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:49:41,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:49:41,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:49:41,821 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:49:41,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:49:41,822 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:49:41,822 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:49:41,822 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:49:41,822 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:49:41,822 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:49:41,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:49:41,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:49:41,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:49:41,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:49:41,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:49:41,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:49:41,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:49:41,827 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:49:41,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:49:41,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:49:41,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:49:41,827 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:49:41,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:49:41,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:49:41,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:49:41,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:49:41,829 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:49:41,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:49:41,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:49:41,829 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:49:41,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:49:41,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:49:41,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:49:41,897 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:49:41,897 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:49:41,898 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2019-09-10 02:49:41,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85af45e13/3e32bc7b230449fd91258db41b0b2b1f/FLAGabdcbb217 [2019-09-10 02:49:42,554 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:49:42,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2019-09-10 02:49:42,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85af45e13/3e32bc7b230449fd91258db41b0b2b1f/FLAGabdcbb217 [2019-09-10 02:49:42,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85af45e13/3e32bc7b230449fd91258db41b0b2b1f [2019-09-10 02:49:42,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:49:42,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:49:42,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:49:42,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:49:42,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:49:42,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:49:42" (1/1) ... [2019-09-10 02:49:42,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f070b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:42, skipping insertion in model container [2019-09-10 02:49:42,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:49:42" (1/1) ... [2019-09-10 02:49:42,793 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:49:42,835 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:49:43,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:49:43,322 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:49:43,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:49:43,439 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:49:43,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43 WrapperNode [2019-09-10 02:49:43,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:49:43,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:49:43,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:49:43,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:49:43,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (1/1) ... [2019-09-10 02:49:43,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (1/1) ... [2019-09-10 02:49:43,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (1/1) ... [2019-09-10 02:49:43,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (1/1) ... [2019-09-10 02:49:43,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (1/1) ... [2019-09-10 02:49:43,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (1/1) ... [2019-09-10 02:49:43,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (1/1) ... [2019-09-10 02:49:43,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:49:43,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:49:43,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:49:43,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:49:43,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (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 02:49:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:49:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:49:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:49:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:49:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:49:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:49:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:49:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:49:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:49:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:49:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:49:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:49:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-10 02:49:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:49:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:49:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:49:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:49:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:49:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:49:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:49:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-10 02:49:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:49:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:49:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:49:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:49:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:49:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:49:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:49:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-10 02:49:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:49:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:49:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:49:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:49:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:49:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:49:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:49:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:49:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:49:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:49:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:49:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:49:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:49:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:49:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:49:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:49:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:49:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:49:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:49:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:49:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:49:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:49:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:49:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:49:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:49:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:49:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:49:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:49:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:49:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-10 02:49:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:49:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:49:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:49:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:49:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:49:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:49:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:49:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:49:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:49:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-10 02:49:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-10 02:49:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:49:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:49:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:49:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:49:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:49:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:49:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:49:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:49:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:49:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:49:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:49:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:49:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:49:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:49:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:49:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:49:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:49:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:49:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:49:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:49:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:49:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:49:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:49:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:49:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:49:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:49:44,740 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:49:44,740 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:49:44,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:49:44 BoogieIcfgContainer [2019-09-10 02:49:44,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:49:44,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:49:44,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:49:44,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:49:44,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:49:42" (1/3) ... [2019-09-10 02:49:44,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471ad247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:49:44, skipping insertion in model container [2019-09-10 02:49:44,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:49:43" (2/3) ... [2019-09-10 02:49:44,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471ad247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:49:44, skipping insertion in model container [2019-09-10 02:49:44,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:49:44" (3/3) ... [2019-09-10 02:49:44,753 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2019-09-10 02:49:44,764 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:49:44,774 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:49:44,791 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:49:44,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:49:44,833 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:49:44,833 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:49:44,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:49:44,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:49:44,834 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:49:44,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:49:44,834 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:49:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-09-10 02:49:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-10 02:49:44,869 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:44,870 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 02:49:44,873 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:44,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2019-09-10 02:49:44,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:44,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:44,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:44,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:44,928 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:45,227 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 02:49:45,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:45,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:49:45,230 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:45,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:49:45,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:49:45,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:45,254 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2019-09-10 02:49:45,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:45,285 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2019-09-10 02:49:45,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:49:45,287 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-10 02:49:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:45,300 INFO L225 Difference]: With dead ends: 160 [2019-09-10 02:49:45,301 INFO L226 Difference]: Without dead ends: 149 [2019-09-10 02:49:45,303 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 02:49:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-10 02:49:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-09-10 02:49:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-09-10 02:49:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2019-09-10 02:49:45,410 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2019-09-10 02:49:45,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:45,411 INFO L475 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2019-09-10 02:49:45,411 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:49:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2019-09-10 02:49:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-10 02:49:45,420 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:45,420 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 02:49:45,421 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:45,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2019-09-10 02:49:45,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:45,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:45,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:45,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:45,426 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:45,596 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 02:49:45,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:45,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:49:45,597 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:45,600 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:49:45,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:49:45,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:49:45,602 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 3 states. [2019-09-10 02:49:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:45,624 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2019-09-10 02:49:45,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:49:45,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-10 02:49:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:45,627 INFO L225 Difference]: With dead ends: 140 [2019-09-10 02:49:45,627 INFO L226 Difference]: Without dead ends: 140 [2019-09-10 02:49:45,628 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 02:49:45,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-10 02:49:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-10 02:49:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-10 02:49:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2019-09-10 02:49:45,644 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2019-09-10 02:49:45,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:45,645 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2019-09-10 02:49:45,645 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:49:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2019-09-10 02:49:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-10 02:49:45,651 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:45,651 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 02:49:45,651 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:45,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2019-09-10 02:49:45,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:45,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:45,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:45,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:45,653 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:45,791 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 02:49:45,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:45,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:49:45,793 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:45,794 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:49:45,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:49:45,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:49:45,795 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 7 states. [2019-09-10 02:49:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:46,182 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2019-09-10 02:49:46,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:49:46,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-10 02:49:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:46,185 INFO L225 Difference]: With dead ends: 140 [2019-09-10 02:49:46,185 INFO L226 Difference]: Without dead ends: 140 [2019-09-10 02:49:46,186 INFO L628 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 [2019-09-10 02:49:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-10 02:49:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-10 02:49:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-10 02:49:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-09-10 02:49:46,198 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2019-09-10 02:49:46,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:46,199 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-09-10 02:49:46,199 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:49:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-09-10 02:49:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-10 02:49:46,202 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:46,203 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] [2019-09-10 02:49:46,203 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:46,204 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2019-09-10 02:49:46,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:46,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:46,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:46,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:46,205 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:46,333 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 02:49:46,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:46,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:49:46,334 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:46,335 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:49:46,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:49:46,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:46,335 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 5 states. [2019-09-10 02:49:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:46,974 INFO L93 Difference]: Finished difference Result 254 states and 293 transitions. [2019-09-10 02:49:46,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:49:46,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2019-09-10 02:49:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:46,980 INFO L225 Difference]: With dead ends: 254 [2019-09-10 02:49:46,981 INFO L226 Difference]: Without dead ends: 254 [2019-09-10 02:49:46,981 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 02:49:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-09-10 02:49:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2019-09-10 02:49:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-09-10 02:49:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2019-09-10 02:49:47,023 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2019-09-10 02:49:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:47,024 INFO L475 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2019-09-10 02:49:47,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:49:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2019-09-10 02:49:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-10 02:49:47,033 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:47,034 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, 1] [2019-09-10 02:49:47,034 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:47,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2019-09-10 02:49:47,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:47,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:47,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,037 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:47,184 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 02:49:47,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:47,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:49:47,185 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:47,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:49:47,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:49:47,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:49:47,189 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 6 states. [2019-09-10 02:49:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:47,392 INFO L93 Difference]: Finished difference Result 355 states and 410 transitions. [2019-09-10 02:49:47,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:49:47,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-10 02:49:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:47,399 INFO L225 Difference]: With dead ends: 355 [2019-09-10 02:49:47,399 INFO L226 Difference]: Without dead ends: 355 [2019-09-10 02:49:47,400 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 02:49:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2019-09-10 02:49:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2019-09-10 02:49:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-09-10 02:49:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 406 transitions. [2019-09-10 02:49:47,429 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 406 transitions. Word has length 89 [2019-09-10 02:49:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:47,429 INFO L475 AbstractCegarLoop]: Abstraction has 351 states and 406 transitions. [2019-09-10 02:49:47,430 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:49:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 406 transitions. [2019-09-10 02:49:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-10 02:49:47,433 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:47,434 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, 1, 1, 1, 1, 1] [2019-09-10 02:49:47,434 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2019-09-10 02:49:47,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:47,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:47,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,436 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:47,611 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 02:49:47,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:47,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:49:47,612 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:47,612 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:49:47,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:49:47,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:49:47,613 INFO L87 Difference]: Start difference. First operand 351 states and 406 transitions. Second operand 6 states. [2019-09-10 02:49:47,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:47,879 INFO L93 Difference]: Finished difference Result 558 states and 663 transitions. [2019-09-10 02:49:47,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:49:47,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-10 02:49:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:47,884 INFO L225 Difference]: With dead ends: 558 [2019-09-10 02:49:47,884 INFO L226 Difference]: Without dead ends: 558 [2019-09-10 02:49:47,885 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 02:49:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2019-09-10 02:49:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 540. [2019-09-10 02:49:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-09-10 02:49:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 640 transitions. [2019-09-10 02:49:47,913 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 640 transitions. Word has length 93 [2019-09-10 02:49:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:47,914 INFO L475 AbstractCegarLoop]: Abstraction has 540 states and 640 transitions. [2019-09-10 02:49:47,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:49:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 640 transitions. [2019-09-10 02:49:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-10 02:49:47,918 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:47,918 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, 1, 1, 1, 1, 1] [2019-09-10 02:49:47,918 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:47,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:47,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2019-09-10 02:49:47,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:47,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:47,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:47,920 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:48,011 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 02:49:48,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:48,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:49:48,013 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:48,013 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:49:48,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:49:48,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:49:48,015 INFO L87 Difference]: Start difference. First operand 540 states and 640 transitions. Second operand 5 states. [2019-09-10 02:49:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:48,044 INFO L93 Difference]: Finished difference Result 550 states and 650 transitions. [2019-09-10 02:49:48,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:49:48,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2019-09-10 02:49:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:48,051 INFO L225 Difference]: With dead ends: 550 [2019-09-10 02:49:48,051 INFO L226 Difference]: Without dead ends: 550 [2019-09-10 02:49:48,052 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 02:49:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2019-09-10 02:49:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 544. [2019-09-10 02:49:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-09-10 02:49:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 643 transitions. [2019-09-10 02:49:48,091 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 643 transitions. Word has length 93 [2019-09-10 02:49:48,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:48,091 INFO L475 AbstractCegarLoop]: Abstraction has 544 states and 643 transitions. [2019-09-10 02:49:48,091 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:49:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 643 transitions. [2019-09-10 02:49:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-10 02:49:48,095 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:48,096 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, 1, 1, 1, 1, 1] [2019-09-10 02:49:48,096 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:48,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2019-09-10 02:49:48,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:48,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:48,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,098 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:48,202 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 02:49:48,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:48,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-10 02:49:48,207 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:48,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-10 02:49:48,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-10 02:49:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:49:48,210 INFO L87 Difference]: Start difference. First operand 544 states and 643 transitions. Second operand 9 states. [2019-09-10 02:49:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:48,272 INFO L93 Difference]: Finished difference Result 548 states and 648 transitions. [2019-09-10 02:49:48,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 02:49:48,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-09-10 02:49:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:48,277 INFO L225 Difference]: With dead ends: 548 [2019-09-10 02:49:48,278 INFO L226 Difference]: Without dead ends: 548 [2019-09-10 02:49:48,278 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 02:49:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-09-10 02:49:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 542. [2019-09-10 02:49:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-09-10 02:49:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 639 transitions. [2019-09-10 02:49:48,326 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 639 transitions. Word has length 93 [2019-09-10 02:49:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:48,326 INFO L475 AbstractCegarLoop]: Abstraction has 542 states and 639 transitions. [2019-09-10 02:49:48,326 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-10 02:49:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 639 transitions. [2019-09-10 02:49:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-10 02:49:48,328 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:48,329 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, 1, 1, 1, 1, 1, 1] [2019-09-10 02:49:48,329 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:48,329 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2019-09-10 02:49:48,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:48,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:48,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,331 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:48,447 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 02:49:48,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:49:48,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-10 02:49:48,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:48,448 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 02:49:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 02:49:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:49:48,449 INFO L87 Difference]: Start difference. First operand 542 states and 639 transitions. Second operand 10 states. [2019-09-10 02:49:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:48,799 INFO L93 Difference]: Finished difference Result 548 states and 633 transitions. [2019-09-10 02:49:48,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 02:49:48,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-09-10 02:49:48,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:48,803 INFO L225 Difference]: With dead ends: 548 [2019-09-10 02:49:48,803 INFO L226 Difference]: Without dead ends: 548 [2019-09-10 02:49:48,804 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:49:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-09-10 02:49:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 531. [2019-09-10 02:49:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-09-10 02:49:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 608 transitions. [2019-09-10 02:49:48,824 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 608 transitions. Word has length 94 [2019-09-10 02:49:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:48,825 INFO L475 AbstractCegarLoop]: Abstraction has 531 states and 608 transitions. [2019-09-10 02:49:48,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 02:49:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 608 transitions. [2019-09-10 02:49:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-10 02:49:48,829 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:49:48,829 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-10 02:49:48,829 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:49:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:48,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1969237444, now seen corresponding path program 1 times [2019-09-10 02:49:48,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:49:48,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:49:48,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:49:48,831 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:49:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:49:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-10 02:49:48,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:49:48,904 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:49:48,905 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2019-09-10 02:49:48,911 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [113], [115], [116], [119], [121], [124], [131], [134], [136], [145], [149], [153], [156], [159], [161], [167], [169], [172], [198], [199], [200], [202], [205], [209], [210], [211], [212], [215], [218], [222], [228], [255], [256], [259], [263], [264], [267], [269], [272], [282], [285], [289], [290], [293], [308], [311], [312], [313], [314], [337], [339], [340], [341], [342], [407], [408], [418], [420], [423], [425], [427], [430], [432], [437], [443], [444], [452], [453], [454], [455], [456], [457], [458], [459], [460], [494], [495], [496], [497], [500], [501], [502], [503], [506], [507], [510], [511], [512], [513], [514], [515], [516], [517], [522], [523], [524], [525], [536], [537], [540], [542], [543], [548], [549], [550], [551], [552], [553], [554], [556], [557], [558] [2019-09-10 02:49:48,969 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:49:48,969 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:49:49,044 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:49:49,046 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 02:49:49,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:49:49,051 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:49:49,118 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:49:49,119 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:49:49,125 INFO L420 sIntCurrentIteration]: We unified 140 AI predicates to 140 [2019-09-10 02:49:49,126 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:49:49,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:49:49,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-10 02:49:49,127 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:49:49,128 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:49:49,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:49:49,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:49:49,128 INFO L87 Difference]: Start difference. First operand 531 states and 608 transitions. Second operand 2 states. [2019-09-10 02:49:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:49:49,129 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:49:49,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:49:49,129 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 141 [2019-09-10 02:49:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:49:49,130 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:49:49,130 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:49:49,131 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 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 02:49:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:49:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:49:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:49:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:49:49,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2019-09-10 02:49:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:49:49,132 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:49:49,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:49:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:49:49,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:49:49,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:49:49 BoogieIcfgContainer [2019-09-10 02:49:49,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:49:49,141 INFO L168 Benchmark]: Toolchain (without parser) took 6364.14 ms. Allocated memory was 135.3 MB in the beginning and 303.6 MB in the end (delta: 168.3 MB). Free memory was 89.1 MB in the beginning and 152.4 MB in the end (delta: -63.3 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:49,142 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:49:49,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.93 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 88.9 MB in the beginning and 167.2 MB in the end (delta: -78.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:49,146 INFO L168 Benchmark]: Boogie Preprocessor took 91.93 ms. Allocated memory is still 201.9 MB. Free memory was 166.9 MB in the beginning and 162.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:49,152 INFO L168 Benchmark]: RCFGBuilder took 1209.14 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 162.7 MB in the beginning and 193.7 MB in the end (delta: -31.0 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:49,153 INFO L168 Benchmark]: TraceAbstraction took 4394.46 ms. Allocated memory was 231.2 MB in the beginning and 303.6 MB in the end (delta: 72.4 MB). Free memory was 193.7 MB in the beginning and 152.4 MB in the end (delta: 41.3 MB). Peak memory consumption was 113.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:49:49,166 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.93 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 88.9 MB in the beginning and 167.2 MB in the end (delta: -78.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.93 ms. Allocated memory is still 201.9 MB. Free memory was 166.9 MB in the beginning and 162.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1209.14 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 162.7 MB in the beginning and 193.7 MB in the end (delta: -31.0 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4394.46 ms. Allocated memory was 231.2 MB in the beginning and 303.6 MB in the end (delta: 72.4 MB). Free memory was 193.7 MB in the beginning and 152.4 MB in the end (delta: 41.3 MB). Peak memory consumption was 113.6 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 41 procedures, 248 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1630 SDtfs, 725 SDslu, 5068 SDs, 0 SdLazy, 789 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=544occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8928571428571429 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 69 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 840 NumberOfCodeBlocks, 840 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 830 ConstructedInterpolants, 0 QuantifiedInterpolants, 109053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 28/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...