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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:50,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:50,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:50,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:50,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:50,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:50,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:50,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:50,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:50,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:50,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:50,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:50,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:50,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:50,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:50,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:50,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:50,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:50,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:50,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:50,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:50,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:50,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:50,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:50,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:50,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:50,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:50,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:51,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:51,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:51,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:51,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:51,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:51,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:51,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:51,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:51,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:51,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:51,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:51,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:51,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:51,011 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 [2019-10-14 23:36:51,039 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:51,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:51,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:51,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:51,041 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:51,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:51,041 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:51,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:51,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:51,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:51,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:51,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:51,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:51,042 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:51,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:51,043 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:51,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:51,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:51,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:51,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:51,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:51,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:51,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:51,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:51,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:51,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:51,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:51,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:51,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:51,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:51,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:51,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:51,340 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:51,340 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:51,341 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-10-14 23:36:51,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f1dbccfd/67cdaeda24744205b26b7bd18ed5eba7/FLAG25e904934 [2019-10-14 23:36:51,976 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:51,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-10-14 23:36:52,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f1dbccfd/67cdaeda24744205b26b7bd18ed5eba7/FLAG25e904934 [2019-10-14 23:36:52,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f1dbccfd/67cdaeda24744205b26b7bd18ed5eba7 [2019-10-14 23:36:52,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:52,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:52,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:52,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:52,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:52,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:52" (1/1) ... [2019-10-14 23:36:52,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528724d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:52, skipping insertion in model container [2019-10-14 23:36:52,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:52" (1/1) ... [2019-10-14 23:36:52,349 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:52,403 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:52,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:52,857 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:52,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:53,021 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:53,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53 WrapperNode [2019-10-14 23:36:53,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:53,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:53,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:53,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:53,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (1/1) ... [2019-10-14 23:36:53,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (1/1) ... [2019-10-14 23:36:53,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (1/1) ... [2019-10-14 23:36:53,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (1/1) ... [2019-10-14 23:36:53,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (1/1) ... [2019-10-14 23:36:53,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (1/1) ... [2019-10-14 23:36:53,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (1/1) ... [2019-10-14 23:36:53,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:53,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:53,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:53,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:53,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (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 [2019-10-14 23:36:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:53,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:36:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:36:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:54,239 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:54,240 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:54,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:54 BoogieIcfgContainer [2019-10-14 23:36:54,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:54,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:54,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:54,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:54,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:52" (1/3) ... [2019-10-14 23:36:54,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4499bfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:54, skipping insertion in model container [2019-10-14 23:36:54,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:53" (2/3) ... [2019-10-14 23:36:54,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4499bfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:54, skipping insertion in model container [2019-10-14 23:36:54,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:54" (3/3) ... [2019-10-14 23:36:54,250 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2019-10-14 23:36:54,260 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:54,269 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:54,281 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:54,308 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:54,308 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:54,308 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:54,308 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:54,309 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:54,309 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:54,309 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:54,309 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-10-14 23:36:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:54,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:54,343 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] [2019-10-14 23:36:54,345 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:54,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2019-10-14 23:36:54,360 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:54,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695835644] [2019-10-14 23:36:54,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,062 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:55,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695835644] [2019-10-14 23:36:55,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:55,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:36:55,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477407200] [2019-10-14 23:36:55,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:36:55,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:55,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:36:55,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:55,190 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2019-10-14 23:36:56,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:56,349 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2019-10-14 23:36:56,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:36:56,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:36:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:56,366 INFO L225 Difference]: With dead ends: 296 [2019-10-14 23:36:56,366 INFO L226 Difference]: Without dead ends: 160 [2019-10-14 23:36:56,370 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-14 23:36:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2019-10-14 23:36:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-14 23:36:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2019-10-14 23:36:56,463 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2019-10-14 23:36:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:56,463 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2019-10-14 23:36:56,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:36:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2019-10-14 23:36:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:36:56,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:56,468 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] [2019-10-14 23:36:56,468 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2019-10-14 23:36:56,469 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:56,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951219372] [2019-10-14 23:36:56,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:56,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:56,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,876 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:56,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951219372] [2019-10-14 23:36:56,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:56,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:56,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400644514] [2019-10-14 23:36:56,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:56,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:56,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:56,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:56,942 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2019-10-14 23:36:57,381 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:58,228 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2019-10-14 23:36:58,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:36:58,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:36:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:58,232 INFO L225 Difference]: With dead ends: 225 [2019-10-14 23:36:58,232 INFO L226 Difference]: Without dead ends: 144 [2019-10-14 23:36:58,234 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-14 23:36:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2019-10-14 23:36:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-14 23:36:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2019-10-14 23:36:58,269 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2019-10-14 23:36:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:58,269 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2019-10-14 23:36:58,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2019-10-14 23:36:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:36:58,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:58,272 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] [2019-10-14 23:36:58,272 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:58,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2019-10-14 23:36:58,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:58,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675289245] [2019-10-14 23:36:58,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,626 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:58,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675289245] [2019-10-14 23:36:58,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:58,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:58,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953459821] [2019-10-14 23:36:58,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:58,762 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:58,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:58,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:58,764 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2019-10-14 23:36:59,235 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:59,654 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:59,967 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:00,238 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:01,569 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2019-10-14 23:37:01,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:01,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-14 23:37:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:01,575 INFO L225 Difference]: With dead ends: 238 [2019-10-14 23:37:01,575 INFO L226 Difference]: Without dead ends: 144 [2019-10-14 23:37:01,576 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-14 23:37:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2019-10-14 23:37:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-14 23:37:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2019-10-14 23:37:01,607 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2019-10-14 23:37:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:01,608 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2019-10-14 23:37:01,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2019-10-14 23:37:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:37:01,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:01,610 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] [2019-10-14 23:37:01,611 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:01,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2019-10-14 23:37:01,611 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:01,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63428057] [2019-10-14 23:37:01,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,934 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:02,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63428057] [2019-10-14 23:37:02,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:02,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:02,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169035615] [2019-10-14 23:37:02,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:02,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:02,048 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2019-10-14 23:37:02,433 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:03,684 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:04,436 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2019-10-14 23:37:04,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:04,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2019-10-14 23:37:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:04,440 INFO L225 Difference]: With dead ends: 338 [2019-10-14 23:37:04,440 INFO L226 Difference]: Without dead ends: 244 [2019-10-14 23:37:04,441 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-10-14 23:37:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2019-10-14 23:37:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-10-14 23:37:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2019-10-14 23:37:04,493 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2019-10-14 23:37:04,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:04,494 INFO L462 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2019-10-14 23:37:04,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2019-10-14 23:37:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-14 23:37:04,496 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:04,497 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] [2019-10-14 23:37:04,497 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:04,497 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2019-10-14 23:37:04,497 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:04,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873308789] [2019-10-14 23:37:04,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,869 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:04,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873308789] [2019-10-14 23:37:04,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:04,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:04,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296885611] [2019-10-14 23:37:04,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:04,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:04,952 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2019-10-14 23:37:05,373 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:06,969 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:07,280 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:07,588 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:07,861 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:08,545 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2019-10-14 23:37:08,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:08,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-14 23:37:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:08,551 INFO L225 Difference]: With dead ends: 555 [2019-10-14 23:37:08,551 INFO L226 Difference]: Without dead ends: 378 [2019-10-14 23:37:08,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-10-14 23:37:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2019-10-14 23:37:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-10-14 23:37:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2019-10-14 23:37:08,627 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2019-10-14 23:37:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:08,627 INFO L462 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2019-10-14 23:37:08,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2019-10-14 23:37:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:37:08,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:08,630 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] [2019-10-14 23:37:08,630 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:08,630 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2019-10-14 23:37:08,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:08,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916838075] [2019-10-14 23:37:08,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:08,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:08,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,974 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:09,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916838075] [2019-10-14 23:37:09,079 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:09,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:09,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000789251] [2019-10-14 23:37:09,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:09,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:09,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:09,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:09,081 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 10 states. [2019-10-14 23:37:09,672 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:11,339 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,657 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:11,932 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:12,199 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:12,547 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:13,509 INFO L93 Difference]: Finished difference Result 743 states and 934 transitions. [2019-10-14 23:37:13,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:13,510 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2019-10-14 23:37:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:13,515 INFO L225 Difference]: With dead ends: 743 [2019-10-14 23:37:13,515 INFO L226 Difference]: Without dead ends: 555 [2019-10-14 23:37:13,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:37:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-14 23:37:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 483. [2019-10-14 23:37:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-10-14 23:37:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 568 transitions. [2019-10-14 23:37:13,614 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 568 transitions. Word has length 84 [2019-10-14 23:37:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:13,615 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 568 transitions. [2019-10-14 23:37:13,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 568 transitions. [2019-10-14 23:37:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:37:13,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:13,617 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] [2019-10-14 23:37:13,617 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2019-10-14 23:37:13,618 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:13,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198897069] [2019-10-14 23:37:13,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:13,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:13,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,913 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:14,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198897069] [2019-10-14 23:37:14,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:14,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:14,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615058151] [2019-10-14 23:37:14,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:14,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:14,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:14,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:14,019 INFO L87 Difference]: Start difference. First operand 483 states and 568 transitions. Second operand 8 states. [2019-10-14 23:37:15,090 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:15,344 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:15,628 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:16,621 INFO L93 Difference]: Finished difference Result 883 states and 1083 transitions. [2019-10-14 23:37:16,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:16,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-14 23:37:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:16,627 INFO L225 Difference]: With dead ends: 883 [2019-10-14 23:37:16,627 INFO L226 Difference]: Without dead ends: 543 [2019-10-14 23:37:16,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-10-14 23:37:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 483. [2019-10-14 23:37:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-10-14 23:37:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 567 transitions. [2019-10-14 23:37:16,722 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 567 transitions. Word has length 84 [2019-10-14 23:37:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:16,723 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 567 transitions. [2019-10-14 23:37:16,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 567 transitions. [2019-10-14 23:37:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:37:16,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:16,725 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] [2019-10-14 23:37:16,725 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:16,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:16,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2019-10-14 23:37:16,726 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:16,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130461325] [2019-10-14 23:37:16,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:16,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:16,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,995 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:17,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130461325] [2019-10-14 23:37:17,166 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:17,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:17,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902579141] [2019-10-14 23:37:17,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:17,173 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:17,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:17,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:17,174 INFO L87 Difference]: Start difference. First operand 483 states and 567 transitions. Second operand 12 states. [2019-10-14 23:37:17,884 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:18,144 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:18,404 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:19,179 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:19,437 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:19,745 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:20,006 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:21,205 INFO L93 Difference]: Finished difference Result 1007 states and 1237 transitions. [2019-10-14 23:37:21,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:21,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-14 23:37:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:21,211 INFO L225 Difference]: With dead ends: 1007 [2019-10-14 23:37:21,211 INFO L226 Difference]: Without dead ends: 548 [2019-10-14 23:37:21,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:21,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-10-14 23:37:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 490. [2019-10-14 23:37:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2019-10-14 23:37:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 574 transitions. [2019-10-14 23:37:21,294 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 574 transitions. Word has length 84 [2019-10-14 23:37:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:21,295 INFO L462 AbstractCegarLoop]: Abstraction has 490 states and 574 transitions. [2019-10-14 23:37:21,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 574 transitions. [2019-10-14 23:37:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-14 23:37:21,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:21,297 INFO L380 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] [2019-10-14 23:37:21,297 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:21,298 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2019-10-14 23:37:21,298 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:21,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070959234] [2019-10-14 23:37:21,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,590 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:21,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070959234] [2019-10-14 23:37:21,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660438107] [2019-10-14 23:37:21,794 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 [2019-10-14 23:37:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-14 23:37:21,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:22,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:37:22,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-14 23:37:22,119 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126732202] [2019-10-14 23:37:22,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:22,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:22,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:22,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:22,120 INFO L87 Difference]: Start difference. First operand 490 states and 574 transitions. Second operand 8 states. [2019-10-14 23:37:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:22,819 INFO L93 Difference]: Finished difference Result 1385 states and 1656 transitions. [2019-10-14 23:37:22,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:22,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2019-10-14 23:37:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:22,827 INFO L225 Difference]: With dead ends: 1385 [2019-10-14 23:37:22,827 INFO L226 Difference]: Without dead ends: 919 [2019-10-14 23:37:22,829 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:22,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-14 23:37:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 916. [2019-10-14 23:37:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2019-10-14 23:37:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1074 transitions. [2019-10-14 23:37:23,081 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1074 transitions. Word has length 96 [2019-10-14 23:37:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:23,083 INFO L462 AbstractCegarLoop]: Abstraction has 916 states and 1074 transitions. [2019-10-14 23:37:23,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1074 transitions. [2019-10-14 23:37:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-14 23:37:23,088 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:23,089 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:23,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:23,295 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:23,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:23,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2019-10-14 23:37:23,297 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:23,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229974127] [2019-10-14 23:37:23,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:23,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:23,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,718 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:23,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229974127] [2019-10-14 23:37:23,864 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:23,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:37:23,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339721674] [2019-10-14 23:37:23,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:37:23,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:37:23,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:23,866 INFO L87 Difference]: Start difference. First operand 916 states and 1074 transitions. Second operand 14 states. [2019-10-14 23:37:24,579 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:24,849 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:25,111 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:25,793 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:26,743 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:27,134 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:27,967 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:28,275 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:28,574 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190