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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:39:45,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:39:45,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:39:45,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:39:45,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:39:45,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:39:45,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:39:45,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:39:45,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:39:45,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:39:45,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:39:45,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:39:45,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:39:45,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:39:45,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:39:45,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:39:45,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:39:45,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:39:45,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:39:45,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:39:45,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:39:45,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:39:45,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:39:45,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:39:45,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:39:45,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:39:45,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:39:45,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:39:45,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:39:45,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:39:45,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:39:45,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:39:45,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:39:45,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:39:45,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:39:45,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:39:45,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:39:45,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:39:45,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:39:45,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:39:45,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:39:45,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:39:45,996 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:39:45,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:39:45,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:39:46,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:39:46,000 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:39:46,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:39:46,000 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:39:46,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:39:46,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:39:46,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:39:46,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:39:46,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:39:46,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:39:46,002 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:39:46,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:39:46,002 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:39:46,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:39:46,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:39:46,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:39:46,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:39:46,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:39:46,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:46,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:39:46,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:39:46,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:39:46,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:39:46,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:39:46,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:39:46,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:39:46,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:39:46,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:39:46,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:39:46,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:39:46,317 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:39:46,318 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-10-13 19:39:46,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a720f862a/f28ee22dddc34832a1ea8848fba73f43/FLAG6b8680aaa [2019-10-13 19:39:46,950 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:39:46,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-10-13 19:39:46,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a720f862a/f28ee22dddc34832a1ea8848fba73f43/FLAG6b8680aaa [2019-10-13 19:39:47,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a720f862a/f28ee22dddc34832a1ea8848fba73f43 [2019-10-13 19:39:47,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:39:47,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:39:47,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:47,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:39:47,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:39:47,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:47" (1/1) ... [2019-10-13 19:39:47,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ef2688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:47, skipping insertion in model container [2019-10-13 19:39:47,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:47" (1/1) ... [2019-10-13 19:39:47,277 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:39:47,338 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:39:47,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:47,869 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:39:48,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:48,041 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:39:48,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48 WrapperNode [2019-10-13 19:39:48,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:48,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:39:48,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:39:48,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:39:48,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:39:48,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:39:48,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:39:48,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:39:48,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:39:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:39:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:39:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:39:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:39:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 19:39:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:39:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:39:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:39:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:39:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:39:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:39:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:39:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:39:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:39:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:39:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:39:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:39:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:39:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:39:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:39:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:39:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:39:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:39:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:39:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:39:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:39:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:39:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:39:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:39:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:39:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:39:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:39:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:39:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:39:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:39:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:39:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:39:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:39:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:39:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:39:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:39:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:39:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:39:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:39:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:39:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:39:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:39:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:39:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:39:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:39:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:39:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:39:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:39:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:39:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:39:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:39:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:39:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 19:39:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:39:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:39:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:39:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:39:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:39:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:39:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:39:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:39:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:39:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:39:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:39:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:39:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:39:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:39:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:39:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:39:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:39:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:39:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:39:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:39:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:39:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:39:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:39:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:39:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:39:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:39:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:39:49,290 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:39:49,291 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:39:49,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:49 BoogieIcfgContainer [2019-10-13 19:39:49,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:39:49,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:39:49,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:39:49,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:39:49,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:39:47" (1/3) ... [2019-10-13 19:39:49,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adbb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:49, skipping insertion in model container [2019-10-13 19:39:49,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48" (2/3) ... [2019-10-13 19:39:49,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adbb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:49, skipping insertion in model container [2019-10-13 19:39:49,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:49" (3/3) ... [2019-10-13 19:39:49,302 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product54.cil.c [2019-10-13 19:39:49,314 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:39:49,324 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:39:49,337 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:39:49,366 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:39:49,366 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:39:49,367 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:39:49,367 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:39:49,367 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:39:49,367 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:39:49,368 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:39:49,368 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:39:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-10-13 19:39:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:39:49,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:49,406 INFO L380 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] [2019-10-13 19:39:49,408 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1513268006, now seen corresponding path program 1 times [2019-10-13 19:39:49,425 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:49,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199744561] [2019-10-13 19:39:49,426 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:49,426 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:49,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,069 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:50,191 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199744561] [2019-10-13 19:39:50,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:50,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:39:50,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67996922] [2019-10-13 19:39:50,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:39:50,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:50,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:39:50,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:50,219 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2019-10-13 19:39:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:51,526 INFO L93 Difference]: Finished difference Result 344 states and 445 transitions. [2019-10-13 19:39:51,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:39:51,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:39:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:51,547 INFO L225 Difference]: With dead ends: 344 [2019-10-13 19:39:51,547 INFO L226 Difference]: Without dead ends: 185 [2019-10-13 19:39:51,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-10-13 19:39:51,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2019-10-13 19:39:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-13 19:39:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-10-13 19:39:51,662 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 46 [2019-10-13 19:39:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:51,662 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-10-13 19:39:51,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:39:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-10-13 19:39:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:39:51,666 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:51,666 INFO L380 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] [2019-10-13 19:39:51,667 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:51,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1135126254, now seen corresponding path program 1 times [2019-10-13 19:39:51,667 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:51,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287316255] [2019-10-13 19:39:51,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:51,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:51,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,022 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:52,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287316255] [2019-10-13 19:39:52,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:52,057 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:39:52,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040383359] [2019-10-13 19:39:52,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:39:52,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:39:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:39:52,060 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 4 states. [2019-10-13 19:39:52,519 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:53,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:53,517 INFO L93 Difference]: Finished difference Result 273 states and 332 transitions. [2019-10-13 19:39:53,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:39:53,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:39:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:53,521 INFO L225 Difference]: With dead ends: 273 [2019-10-13 19:39:53,521 INFO L226 Difference]: Without dead ends: 169 [2019-10-13 19:39:53,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:39:53,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-10-13 19:39:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2019-10-13 19:39:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 19:39:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2019-10-13 19:39:53,563 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 47 [2019-10-13 19:39:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:53,563 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2019-10-13 19:39:53,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:39:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2019-10-13 19:39:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:39:53,566 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:53,566 INFO L380 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] [2019-10-13 19:39:53,566 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1031816634, now seen corresponding path program 1 times [2019-10-13 19:39:53,567 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:53,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412474422] [2019-10-13 19:39:53,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:53,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:53,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,931 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:54,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412474422] [2019-10-13 19:39:54,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:54,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:39:54,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361343146] [2019-10-13 19:39:54,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:39:54,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:54,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:39:54,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:39:54,061 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand 8 states. [2019-10-13 19:39:54,509 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:54,857 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:55,137 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:55,386 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:56,860 INFO L93 Difference]: Finished difference Result 286 states and 350 transitions. [2019-10-13 19:39:56,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:39:56,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 19:39:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:56,863 INFO L225 Difference]: With dead ends: 286 [2019-10-13 19:39:56,863 INFO L226 Difference]: Without dead ends: 169 [2019-10-13 19:39:56,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:39:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-10-13 19:39:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2019-10-13 19:39:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 19:39:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2019-10-13 19:39:56,906 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 52 [2019-10-13 19:39:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:56,906 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2019-10-13 19:39:56,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:39:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2019-10-13 19:39:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:39:56,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:56,909 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:56,910 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:56,910 INFO L82 PathProgramCache]: Analyzing trace with hash 276958236, now seen corresponding path program 1 times [2019-10-13 19:39:56,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:56,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986667691] [2019-10-13 19:39:56,911 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:56,911 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:56,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,207 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:57,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986667691] [2019-10-13 19:39:57,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:57,313 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:39:57,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459157648] [2019-10-13 19:39:57,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:39:57,314 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:57,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:39:57,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:39:57,316 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand 6 states. [2019-10-13 19:39:57,753 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:59,040 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:59,895 INFO L93 Difference]: Finished difference Result 389 states and 479 transitions. [2019-10-13 19:39:59,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:39:59,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-13 19:39:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:59,899 INFO L225 Difference]: With dead ends: 389 [2019-10-13 19:39:59,900 INFO L226 Difference]: Without dead ends: 272 [2019-10-13 19:39:59,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:39:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-10-13 19:39:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 229. [2019-10-13 19:39:59,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-10-13 19:39:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 258 transitions. [2019-10-13 19:39:59,950 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 258 transitions. Word has length 70 [2019-10-13 19:39:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:59,950 INFO L462 AbstractCegarLoop]: Abstraction has 229 states and 258 transitions. [2019-10-13 19:39:59,950 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:39:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 258 transitions. [2019-10-13 19:39:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:39:59,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:59,953 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:59,953 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:59,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1283615481, now seen corresponding path program 1 times [2019-10-13 19:39:59,954 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:59,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577061583] [2019-10-13 19:39:59,954 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:59,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:59,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,368 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:00,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577061583] [2019-10-13 19:40:00,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:00,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:40:00,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763565194] [2019-10-13 19:40:00,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:40:00,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:00,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:40:00,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:00,508 INFO L87 Difference]: Start difference. First operand 229 states and 258 transitions. Second operand 12 states. [2019-10-13 19:40:01,426 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:01,778 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:02,047 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:02,324 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:02,956 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:04,205 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:04,574 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:04,854 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:05,124 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:05,426 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:05,706 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:07,112 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:07,533 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:08,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:08,689 INFO L93 Difference]: Finished difference Result 798 states and 1014 transitions. [2019-10-13 19:40:08,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:08,690 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-13 19:40:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:08,696 INFO L225 Difference]: With dead ends: 798 [2019-10-13 19:40:08,696 INFO L226 Difference]: Without dead ends: 593 [2019-10-13 19:40:08,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-13 19:40:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 531. [2019-10-13 19:40:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-13 19:40:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 618 transitions. [2019-10-13 19:40:08,802 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 618 transitions. Word has length 84 [2019-10-13 19:40:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:08,803 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 618 transitions. [2019-10-13 19:40:08,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 618 transitions. [2019-10-13 19:40:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 19:40:08,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:08,807 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:08,808 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash -836442027, now seen corresponding path program 1 times [2019-10-13 19:40:08,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:08,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774713759] [2019-10-13 19:40:08,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:08,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:08,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,078 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:40:09,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774713759] [2019-10-13 19:40:09,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782461789] [2019-10-13 19:40:09,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:40:09,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:09,678 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:09,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-13 19:40:09,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68461207] [2019-10-13 19:40:09,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:09,679 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:09,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:40:09,680 INFO L87 Difference]: Start difference. First operand 531 states and 618 transitions. Second operand 8 states. [2019-10-13 19:40:11,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:11,139 INFO L93 Difference]: Finished difference Result 1368 states and 1758 transitions. [2019-10-13 19:40:11,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:40:11,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2019-10-13 19:40:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:11,149 INFO L225 Difference]: With dead ends: 1368 [2019-10-13 19:40:11,149 INFO L226 Difference]: Without dead ends: 976 [2019-10-13 19:40:11,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:40:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2019-10-13 19:40:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 892. [2019-10-13 19:40:11,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2019-10-13 19:40:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1083 transitions. [2019-10-13 19:40:11,357 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1083 transitions. Word has length 141 [2019-10-13 19:40:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:11,358 INFO L462 AbstractCegarLoop]: Abstraction has 892 states and 1083 transitions. [2019-10-13 19:40:11,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:11,358 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1083 transitions. [2019-10-13 19:40:11,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 19:40:11,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:11,362 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:11,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:11,568 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash 974208917, now seen corresponding path program 1 times [2019-10-13 19:40:11,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:11,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922235611] [2019-10-13 19:40:11,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:11,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:11,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,885 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:40:12,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922235611] [2019-10-13 19:40:12,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623723260] [2019-10-13 19:40:12,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:12,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:40:12,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:12,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-13 19:40:12,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105766585] [2019-10-13 19:40:12,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:12,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:12,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:12,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:40:12,358 INFO L87 Difference]: Start difference. First operand 892 states and 1083 transitions. Second operand 6 states. [2019-10-13 19:40:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:12,580 INFO L93 Difference]: Finished difference Result 1780 states and 2210 transitions. [2019-10-13 19:40:12,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:40:12,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-13 19:40:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:12,587 INFO L225 Difference]: With dead ends: 1780 [2019-10-13 19:40:12,588 INFO L226 Difference]: Without dead ends: 912 [2019-10-13 19:40:12,591 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-13 19:40:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2019-10-13 19:40:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-13 19:40:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1107 transitions. [2019-10-13 19:40:12,778 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1107 transitions. Word has length 133 [2019-10-13 19:40:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:12,778 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1107 transitions. [2019-10-13 19:40:12,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1107 transitions. [2019-10-13 19:40:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 19:40:12,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:12,781 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:12,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:12,987 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:12,987 INFO L82 PathProgramCache]: Analyzing trace with hash -168293549, now seen corresponding path program 1 times [2019-10-13 19:40:12,987 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:12,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517091520] [2019-10-13 19:40:12,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:12,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:12,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,284 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:40:13,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517091520] [2019-10-13 19:40:13,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865308258] [2019-10-13 19:40:13,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:40:13,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:40:13,724 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:13,724 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2019-10-13 19:40:13,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414054114] [2019-10-13 19:40:13,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:40:13,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:13,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:40:13,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:13,726 INFO L87 Difference]: Start difference. First operand 912 states and 1107 transitions. Second operand 5 states. [2019-10-13 19:40:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:13,908 INFO L93 Difference]: Finished difference Result 1661 states and 2060 transitions. [2019-10-13 19:40:13,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:13,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-10-13 19:40:13,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:13,917 INFO L225 Difference]: With dead ends: 1661 [2019-10-13 19:40:13,917 INFO L226 Difference]: Without dead ends: 773 [2019-10-13 19:40:13,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:13,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-13 19:40:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2019-10-13 19:40:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2019-10-13 19:40:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 923 transitions. [2019-10-13 19:40:14,162 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 923 transitions. Word has length 133 [2019-10-13 19:40:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:14,163 INFO L462 AbstractCegarLoop]: Abstraction has 773 states and 923 transitions. [2019-10-13 19:40:14,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:40:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 923 transitions. [2019-10-13 19:40:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 19:40:14,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:14,167 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:14,375 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:14,375 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:14,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396760, now seen corresponding path program 1 times [2019-10-13 19:40:14,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:14,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891323066] [2019-10-13 19:40:14,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:14,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:14,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,724 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:40:14,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891323066] [2019-10-13 19:40:14,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053656857] [2019-10-13 19:40:14,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:15,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:15,342 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:15,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-10-13 19:40:15,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110209535] [2019-10-13 19:40:15,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 19:40:15,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:15,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 19:40:15,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:40:15,344 INFO L87 Difference]: Start difference. First operand 773 states and 923 transitions. Second operand 20 states. [2019-10-13 19:40:16,424 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:17,578 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:17,943 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:18,584 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:20,765 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:21,299 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:21,690 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:22,014 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:22,602 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2019-10-13 19:40:22,948 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:23,284 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:23,577 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:23,921 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191