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_spec1_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:41,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:41,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:41,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:41,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:41,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:41,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:41,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:41,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:41,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:41,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:41,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:41,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:41,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:41,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:41,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:41,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:41,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:41,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:41,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:41,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:41,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:41,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:41,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:41,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:41,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:41,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:41,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:41,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:41,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:41,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:41,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:41,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:41,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:41,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:41,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:41,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:41,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:41,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:41,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:41,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:41,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:29:41,999 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:42,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:42,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:42,000 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:42,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:42,001 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:42,001 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:42,001 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:42,002 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:42,002 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:42,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:42,003 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:42,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:42,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:42,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:42,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:42,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:42,004 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:42,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:42,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:42,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:42,005 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:42,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:42,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:42,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:42,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:42,006 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:42,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:42,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:42,007 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:42,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:42,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:42,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:42,060 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:42,061 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:42,061 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-09-20 13:29:42,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ebbbbbe/a36d6a7482d34641a9e82cc5f1c8bb19/FLAG436d90eab [2019-09-20 13:29:42,640 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:42,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-09-20 13:29:42,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ebbbbbe/a36d6a7482d34641a9e82cc5f1c8bb19/FLAG436d90eab [2019-09-20 13:29:42,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ebbbbbe/a36d6a7482d34641a9e82cc5f1c8bb19 [2019-09-20 13:29:42,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:42,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:42,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:42,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:42,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:42,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:42" (1/1) ... [2019-09-20 13:29:42,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ec9619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:42, skipping insertion in model container [2019-09-20 13:29:42,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:42" (1/1) ... [2019-09-20 13:29:42,964 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:43,028 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:43,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:43,490 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:43,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:43,623 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:43,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43 WrapperNode [2019-09-20 13:29:43,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:43,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:43,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:43,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:43,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (1/1) ... [2019-09-20 13:29:43,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (1/1) ... [2019-09-20 13:29:43,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (1/1) ... [2019-09-20 13:29:43,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (1/1) ... [2019-09-20 13:29:43,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (1/1) ... [2019-09-20 13:29:43,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (1/1) ... [2019-09-20 13:29:43,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (1/1) ... [2019-09-20 13:29:43,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:43,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:43,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:43,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:43,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (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 [2019-09-20 13:29:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:29:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:29:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:29:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:29:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:29:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-20 13:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:29:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:29:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:29:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:29:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:29:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:29:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:29:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:29:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:29:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:29:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:29:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:29:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:29:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:29:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:29:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-20 13:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:29:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:29:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:29:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:29:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:44,834 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:44,835 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:29:44,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:44 BoogieIcfgContainer [2019-09-20 13:29:44,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:44,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:44,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:44,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:44,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:42" (1/3) ... [2019-09-20 13:29:44,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a06816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:44, skipping insertion in model container [2019-09-20 13:29:44,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:43" (2/3) ... [2019-09-20 13:29:44,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a06816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:44, skipping insertion in model container [2019-09-20 13:29:44,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:44" (3/3) ... [2019-09-20 13:29:44,844 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product48.cil.c [2019-09-20 13:29:44,854 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:44,862 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:44,879 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:44,905 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:44,905 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:44,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:44,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:44,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:44,906 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:44,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:44,906 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-09-20 13:29:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:29:44,939 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:44,940 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:44,943 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash -952681071, now seen corresponding path program 1 times [2019-09-20 13:29:44,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:45,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:45,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:45,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:45,010 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:45,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:45,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:45,301 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:45,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:45,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:45,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:45,321 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 2 states. [2019-09-20 13:29:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:45,350 INFO L93 Difference]: Finished difference Result 151 states and 178 transitions. [2019-09-20 13:29:45,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:45,352 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:29:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:45,365 INFO L225 Difference]: With dead ends: 151 [2019-09-20 13:29:45,365 INFO L226 Difference]: Without dead ends: 140 [2019-09-20 13:29:45,367 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-20 13:29:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-20 13:29:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-20 13:29:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2019-09-20 13:29:45,420 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 46 [2019-09-20 13:29:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:45,420 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2019-09-20 13:29:45,420 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2019-09-20 13:29:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:29:45,424 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:45,424 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:45,424 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:45,425 INFO L82 PathProgramCache]: Analyzing trace with hash -448216280, now seen corresponding path program 1 times [2019-09-20 13:29:45,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:45,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:45,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:45,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:45,428 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:45,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:45,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:45,542 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:45,544 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:45,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:45,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:45,545 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 3 states. [2019-09-20 13:29:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:45,569 INFO L93 Difference]: Finished difference Result 131 states and 154 transitions. [2019-09-20 13:29:45,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:45,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-20 13:29:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:45,572 INFO L225 Difference]: With dead ends: 131 [2019-09-20 13:29:45,572 INFO L226 Difference]: Without dead ends: 131 [2019-09-20 13:29:45,573 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-09-20 13:29:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-09-20 13:29:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-09-20 13:29:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2019-09-20 13:29:45,587 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 47 [2019-09-20 13:29:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:45,587 INFO L475 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2019-09-20 13:29:45,587 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2019-09-20 13:29:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:29:45,590 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:45,590 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:45,590 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash -673738792, now seen corresponding path program 1 times [2019-09-20 13:29:45,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:45,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:45,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:45,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:45,593 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:45,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:45,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:29:45,736 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:45,737 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:29:45,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:29:45,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:45,738 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand 7 states. [2019-09-20 13:29:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:46,187 INFO L93 Difference]: Finished difference Result 288 states and 348 transitions. [2019-09-20 13:29:46,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:29:46,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2019-09-20 13:29:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:46,192 INFO L225 Difference]: With dead ends: 288 [2019-09-20 13:29:46,192 INFO L226 Difference]: Without dead ends: 288 [2019-09-20 13:29:46,193 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:29:46,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-09-20 13:29:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 276. [2019-09-20 13:29:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2019-09-20 13:29:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2019-09-20 13:29:46,267 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 52 [2019-09-20 13:29:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:46,267 INFO L475 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2019-09-20 13:29:46,267 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:29:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2019-09-20 13:29:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:29:46,276 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:46,277 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:46,279 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:46,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1909301517, now seen corresponding path program 1 times [2019-09-20 13:29:46,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:46,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:46,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:46,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:46,284 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:46,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:46,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:46,433 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:46,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:46,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:46,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:46,436 INFO L87 Difference]: Start difference. First operand 276 states and 336 transitions. Second operand 6 states. [2019-09-20 13:29:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:46,630 INFO L93 Difference]: Finished difference Result 513 states and 628 transitions. [2019-09-20 13:29:46,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:29:46,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-20 13:29:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:46,635 INFO L225 Difference]: With dead ends: 513 [2019-09-20 13:29:46,635 INFO L226 Difference]: Without dead ends: 513 [2019-09-20 13:29:46,636 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:29:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-09-20 13:29:46,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 507. [2019-09-20 13:29:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-09-20 13:29:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 622 transitions. [2019-09-20 13:29:46,687 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 622 transitions. Word has length 57 [2019-09-20 13:29:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:46,689 INFO L475 AbstractCegarLoop]: Abstraction has 507 states and 622 transitions. [2019-09-20 13:29:46,691 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 622 transitions. [2019-09-20 13:29:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-20 13:29:46,701 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:46,701 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:46,704 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:46,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:46,705 INFO L82 PathProgramCache]: Analyzing trace with hash 431982967, now seen corresponding path program 1 times [2019-09-20 13:29:46,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:46,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:46,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:46,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:46,713 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:46,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:46,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:29:46,845 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:46,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:29:46,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:29:46,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:46,849 INFO L87 Difference]: Start difference. First operand 507 states and 622 transitions. Second operand 7 states. [2019-09-20 13:29:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:47,560 INFO L93 Difference]: Finished difference Result 863 states and 1094 transitions. [2019-09-20 13:29:47,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:29:47,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-09-20 13:29:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:47,566 INFO L225 Difference]: With dead ends: 863 [2019-09-20 13:29:47,567 INFO L226 Difference]: Without dead ends: 863 [2019-09-20 13:29:47,567 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:29:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-09-20 13:29:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 765. [2019-09-20 13:29:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-09-20 13:29:47,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 927 transitions. [2019-09-20 13:29:47,634 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 927 transitions. Word has length 61 [2019-09-20 13:29:47,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:47,635 INFO L475 AbstractCegarLoop]: Abstraction has 765 states and 927 transitions. [2019-09-20 13:29:47,635 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:29:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 927 transitions. [2019-09-20 13:29:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-20 13:29:47,639 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:47,640 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:47,640 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash -597595789, now seen corresponding path program 1 times [2019-09-20 13:29:47,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:47,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:47,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:47,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:47,646 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:29:47,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:47,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:47,784 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:47,785 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:47,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:47,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:47,785 INFO L87 Difference]: Start difference. First operand 765 states and 927 transitions. Second operand 4 states. [2019-09-20 13:29:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:48,061 INFO L93 Difference]: Finished difference Result 2095 states and 2661 transitions. [2019-09-20 13:29:48,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:48,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2019-09-20 13:29:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:48,073 INFO L225 Difference]: With dead ends: 2095 [2019-09-20 13:29:48,073 INFO L226 Difference]: Without dead ends: 2095 [2019-09-20 13:29:48,074 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2019-09-20 13:29:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2049. [2019-09-20 13:29:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2049 states. [2019-09-20 13:29:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2569 transitions. [2019-09-20 13:29:48,171 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2569 transitions. Word has length 99 [2019-09-20 13:29:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:48,171 INFO L475 AbstractCegarLoop]: Abstraction has 2049 states and 2569 transitions. [2019-09-20 13:29:48,171 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2569 transitions. [2019-09-20 13:29:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-20 13:29:48,181 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:48,181 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:48,182 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:48,182 INFO L82 PathProgramCache]: Analyzing trace with hash -589836430, now seen corresponding path program 1 times [2019-09-20 13:29:48,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:48,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:48,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,185 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:29:48,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:48,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:48,276 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:48,278 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:48,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:48,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:48,279 INFO L87 Difference]: Start difference. First operand 2049 states and 2569 transitions. Second operand 6 states. [2019-09-20 13:29:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:48,343 INFO L93 Difference]: Finished difference Result 2133 states and 2673 transitions. [2019-09-20 13:29:48,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:29:48,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-09-20 13:29:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:48,355 INFO L225 Difference]: With dead ends: 2133 [2019-09-20 13:29:48,356 INFO L226 Difference]: Without dead ends: 2133 [2019-09-20 13:29:48,356 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2019-09-20 13:29:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2109. [2019-09-20 13:29:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2019-09-20 13:29:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2633 transitions. [2019-09-20 13:29:48,439 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2633 transitions. Word has length 99 [2019-09-20 13:29:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:48,440 INFO L475 AbstractCegarLoop]: Abstraction has 2109 states and 2633 transitions. [2019-09-20 13:29:48,440 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2633 transitions. [2019-09-20 13:29:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-20 13:29:48,446 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:48,446 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:48,446 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:48,447 INFO L82 PathProgramCache]: Analyzing trace with hash 303649908, now seen corresponding path program 1 times [2019-09-20 13:29:48,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:48,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:48,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,450 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:29:48,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:48,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:29:48,563 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:48,564 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:29:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:29:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:48,565 INFO L87 Difference]: Start difference. First operand 2109 states and 2633 transitions. Second operand 8 states. [2019-09-20 13:29:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:48,613 INFO L93 Difference]: Finished difference Result 1747 states and 2151 transitions. [2019-09-20 13:29:48,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:29:48,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2019-09-20 13:29:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:48,627 INFO L225 Difference]: With dead ends: 1747 [2019-09-20 13:29:48,628 INFO L226 Difference]: Without dead ends: 1747 [2019-09-20 13:29:48,628 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:48,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2019-09-20 13:29:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1747. [2019-09-20 13:29:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2019-09-20 13:29:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2151 transitions. [2019-09-20 13:29:48,724 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2151 transitions. Word has length 99 [2019-09-20 13:29:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:48,725 INFO L475 AbstractCegarLoop]: Abstraction has 1747 states and 2151 transitions. [2019-09-20 13:29:48,725 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:29:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2151 transitions. [2019-09-20 13:29:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:29:48,733 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:48,733 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:48,733 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:48,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1696809349, now seen corresponding path program 1 times [2019-09-20 13:29:48,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:48,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:48,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:48,738 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:29:48,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:48,941 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:48,942 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 104 with the following transitions: [2019-09-20 13:29:48,944 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [129], [132], [134], [143], [147], [151], [154], [159], [162], [167], [173], [179], [196], [198], [203], [206], [209], [211], [216], [218], [219], [220], [221], [227], [231], [275], [279], [280], [283], [284], [287], [289], [292], [302], [303], [304], [327], [329], [330], [348], [349], [399], [400], [405], [407], [410], [414], [416], [419], [421], [424], [437], [438], [439], [440], [441], [442], [443], [444], [445], [485], [486], [487], [488], [489], [490], [495], [499], [500], [501], [502], [503], [504], [507], [508], [509], [515], [516], [517], [518], [525], [527], [528], [533], [534], [535], [537], [538], [539], [540], [541] [2019-09-20 13:29:48,991 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:48,991 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:49,083 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:49,084 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-20 13:29:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:49,089 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:49,152 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:29:49,152 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:49,162 INFO L420 sIntCurrentIteration]: We unified 102 AI predicates to 102 [2019-09-20 13:29:49,162 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:49,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:49,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:29:49,164 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:49,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:49,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:49,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:49,167 INFO L87 Difference]: Start difference. First operand 1747 states and 2151 transitions. Second operand 2 states. [2019-09-20 13:29:49,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:49,167 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:29:49,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:49,168 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 103 [2019-09-20 13:29:49,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:49,168 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:29:49,168 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:49,169 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:49,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2019-09-20 13:29:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:49,170 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:49,170 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:49,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:49,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:49 BoogieIcfgContainer [2019-09-20 13:29:49,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:49,181 INFO L168 Benchmark]: Toolchain (without parser) took 6236.16 ms. Allocated memory was 140.0 MB in the beginning and 319.3 MB in the end (delta: 179.3 MB). Free memory was 86.3 MB in the beginning and 134.7 MB in the end (delta: -48.4 MB). Peak memory consumption was 130.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:49,182 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:49,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.79 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 86.1 MB in the beginning and 164.2 MB in the end (delta: -78.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:49,185 INFO L168 Benchmark]: Boogie Preprocessor took 84.30 ms. Allocated memory is still 199.2 MB. Free memory was 164.2 MB in the beginning and 159.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:49,187 INFO L168 Benchmark]: RCFGBuilder took 1127.60 ms. Allocated memory was 199.2 MB in the beginning and 224.9 MB in the end (delta: 25.7 MB). Free memory was 159.9 MB in the beginning and 189.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:49,194 INFO L168 Benchmark]: TraceAbstraction took 4340.02 ms. Allocated memory was 224.9 MB in the beginning and 319.3 MB in the end (delta: 94.4 MB). Free memory was 189.7 MB in the beginning and 134.7 MB in the end (delta: 54.9 MB). Peak memory consumption was 149.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:49,203 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.79 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 86.1 MB in the beginning and 164.2 MB in the end (delta: -78.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.30 ms. Allocated memory is still 199.2 MB. Free memory was 164.2 MB in the beginning and 159.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1127.60 ms. Allocated memory was 199.2 MB in the beginning and 224.9 MB in the end (delta: 25.7 MB). Free memory was 159.9 MB in the beginning and 189.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4340.02 ms. Allocated memory was 224.9 MB in the beginning and 319.3 MB in the end (delta: 94.4 MB). Free memory was 189.7 MB in the beginning and 134.7 MB in the end (delta: 54.9 MB). Peak memory consumption was 149.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 863]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 242 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1432 SDtfs, 805 SDslu, 3367 SDs, 0 SdLazy, 947 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2109occurred 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, 1.0686274509803921 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 186 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 663 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 83242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...