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_spec2_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:19,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:19,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:19,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:19,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:19,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:19,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:19,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:19,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:19,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:19,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:19,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:19,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:19,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:19,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:19,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:19,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:19,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:19,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:19,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:19,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:19,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:19,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:19,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:19,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:19,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:19,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:19,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:19,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:19,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:19,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:19,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:19,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:19,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:19,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:19,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:19,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:19,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:19,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:19,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:19,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:19,079 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 23:36:19,100 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:19,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:19,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:19,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:19,103 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:19,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:19,103 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:19,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:19,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:19,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:19,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:19,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:19,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:19,105 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:19,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:19,106 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:19,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:19,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:19,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:19,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:19,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:19,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:19,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:19,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:19,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:19,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:19,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:19,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:19,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:19,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:19,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:19,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:19,443 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:19,443 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:19,444 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-10-14 23:36:19,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faabffc09/2abdb25814b9421db98ad8bc6ddcacbd/FLAG3a0956f28 [2019-10-14 23:36:20,053 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:20,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-10-14 23:36:20,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faabffc09/2abdb25814b9421db98ad8bc6ddcacbd/FLAG3a0956f28 [2019-10-14 23:36:20,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faabffc09/2abdb25814b9421db98ad8bc6ddcacbd [2019-10-14 23:36:20,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:20,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:20,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:20,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:20,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:20,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:20" (1/1) ... [2019-10-14 23:36:20,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe97d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:20, skipping insertion in model container [2019-10-14 23:36:20,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:20" (1/1) ... [2019-10-14 23:36:20,385 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:20,439 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:20,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:20,929 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:21,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:21,084 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:21,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21 WrapperNode [2019-10-14 23:36:21,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:21,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:21,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:21,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:21,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:21,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:21,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:21,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:21,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (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 23:36:21,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:21,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:36:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:36:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:36:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:36:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:22,491 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:22,492 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:22,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:22 BoogieIcfgContainer [2019-10-14 23:36:22,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:22,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:22,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:22,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:22,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:20" (1/3) ... [2019-10-14 23:36:22,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0d2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:22, skipping insertion in model container [2019-10-14 23:36:22,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (2/3) ... [2019-10-14 23:36:22,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0d2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:22, skipping insertion in model container [2019-10-14 23:36:22,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:22" (3/3) ... [2019-10-14 23:36:22,502 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2019-10-14 23:36:22,512 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:22,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:22,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:22,560 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:22,560 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:22,560 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:22,560 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:22,561 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:22,561 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:22,561 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:22,561 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2019-10-14 23:36:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:36:22,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:22,597 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] [2019-10-14 23:36:22,599 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1876229816, now seen corresponding path program 1 times [2019-10-14 23:36:22,615 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:22,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096405660] [2019-10-14 23:36:22,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:22,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:22,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,364 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,481 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 23:36:23,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096405660] [2019-10-14 23:36:23,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:23,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:23,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911581158] [2019-10-14 23:36:23,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:23,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:23,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:23,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:23,507 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2019-10-14 23:36:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:24,989 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2019-10-14 23:36:24,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:36:24,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:36:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:25,006 INFO L225 Difference]: With dead ends: 369 [2019-10-14 23:36:25,007 INFO L226 Difference]: Without dead ends: 205 [2019-10-14 23:36:25,012 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:25,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-10-14 23:36:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2019-10-14 23:36:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-14 23:36:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2019-10-14 23:36:25,113 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 51 [2019-10-14 23:36:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:25,113 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2019-10-14 23:36:25,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2019-10-14 23:36:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:25,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:25,118 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 23:36:25,118 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:25,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash -473730038, now seen corresponding path program 1 times [2019-10-14 23:36:25,119 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:25,119 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027582494] [2019-10-14 23:36:25,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,450 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,508 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 23:36:25,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027582494] [2019-10-14 23:36:25,509 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:25,509 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:36:25,509 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844903394] [2019-10-14 23:36:25,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:36:25,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:36:25,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:25,523 INFO L87 Difference]: Start difference. First operand 165 states and 197 transitions. Second operand 5 states. [2019-10-14 23:36:26,054 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:27,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:27,302 INFO L93 Difference]: Finished difference Result 304 states and 380 transitions. [2019-10-14 23:36:27,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:36:27,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:36:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:27,307 INFO L225 Difference]: With dead ends: 304 [2019-10-14 23:36:27,307 INFO L226 Difference]: Without dead ends: 195 [2019-10-14 23:36:27,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-14 23:36:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 156. [2019-10-14 23:36:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-10-14 23:36:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 185 transitions. [2019-10-14 23:36:27,353 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 185 transitions. Word has length 52 [2019-10-14 23:36:27,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:27,354 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 185 transitions. [2019-10-14 23:36:27,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:36:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 185 transitions. [2019-10-14 23:36:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:36:27,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:27,357 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] [2019-10-14 23:36:27,357 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1190097928, now seen corresponding path program 1 times [2019-10-14 23:36:27,358 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:27,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190911502] [2019-10-14 23:36:27,358 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:27,358 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:27,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,759 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,873 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 23:36:27,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190911502] [2019-10-14 23:36:27,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:27,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:27,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141949928] [2019-10-14 23:36:27,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:27,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:27,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:27,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:27,876 INFO L87 Difference]: Start difference. First operand 156 states and 185 transitions. Second operand 9 states. [2019-10-14 23:36:28,320 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:28,670 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:36:28,958 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:29,241 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:30,188 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:32,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:32,984 INFO L93 Difference]: Finished difference Result 528 states and 668 transitions. [2019-10-14 23:36:33,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:33,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-14 23:36:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:33,010 INFO L225 Difference]: With dead ends: 528 [2019-10-14 23:36:33,010 INFO L226 Difference]: Without dead ends: 400 [2019-10-14 23:36:33,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:36:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2019-10-14 23:36:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 323. [2019-10-14 23:36:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2019-10-14 23:36:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 396 transitions. [2019-10-14 23:36:33,086 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 396 transitions. Word has length 57 [2019-10-14 23:36:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:33,086 INFO L462 AbstractCegarLoop]: Abstraction has 323 states and 396 transitions. [2019-10-14 23:36:33,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 396 transitions. [2019-10-14 23:36:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:36:33,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:33,090 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] [2019-10-14 23:36:33,090 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1162392239, now seen corresponding path program 1 times [2019-10-14 23:36:33,091 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:33,091 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107313197] [2019-10-14 23:36:33,091 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:33,091 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:33,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,457 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,580 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 23:36:33,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107313197] [2019-10-14 23:36:33,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:33,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:33,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534115000] [2019-10-14 23:36:33,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:33,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:33,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:33,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:33,584 INFO L87 Difference]: Start difference. First operand 323 states and 396 transitions. Second operand 9 states. [2019-10-14 23:36:34,035 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:35,186 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,660 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,939 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:36,283 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:38,370 INFO L93 Difference]: Finished difference Result 1042 states and 1376 transitions. [2019-10-14 23:36:38,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:36:38,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-14 23:36:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:38,377 INFO L225 Difference]: With dead ends: 1042 [2019-10-14 23:36:38,378 INFO L226 Difference]: Without dead ends: 747 [2019-10-14 23:36:38,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:36:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-14 23:36:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 594. [2019-10-14 23:36:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-10-14 23:36:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 732 transitions. [2019-10-14 23:36:38,525 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 732 transitions. Word has length 62 [2019-10-14 23:36:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:38,525 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 732 transitions. [2019-10-14 23:36:38,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 732 transitions. [2019-10-14 23:36:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:36:38,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:38,530 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 23:36:38,530 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash -956691731, now seen corresponding path program 1 times [2019-10-14 23:36:38,531 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:38,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061265824] [2019-10-14 23:36:38,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:38,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:38,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,866 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,049 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 23:36:39,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061265824] [2019-10-14 23:36:39,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:39,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:39,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322509217] [2019-10-14 23:36:39,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:39,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:39,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:39,052 INFO L87 Difference]: Start difference. First operand 594 states and 732 transitions. Second operand 10 states. [2019-10-14 23:36:39,628 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:40,862 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:41,172 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:41,432 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:42,313 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:43,916 INFO L93 Difference]: Finished difference Result 1649 states and 2238 transitions. [2019-10-14 23:36:43,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 23:36:43,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-14 23:36:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:43,927 INFO L225 Difference]: With dead ends: 1649 [2019-10-14 23:36:43,927 INFO L226 Difference]: Without dead ends: 1083 [2019-10-14 23:36:43,930 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:36:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2019-10-14 23:36:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 877. [2019-10-14 23:36:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-10-14 23:36:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1063 transitions. [2019-10-14 23:36:44,100 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1063 transitions. Word has length 66 [2019-10-14 23:36:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:44,100 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1063 transitions. [2019-10-14 23:36:44,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1063 transitions. [2019-10-14 23:36:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 23:36:44,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:44,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:44,105 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash 181415894, now seen corresponding path program 1 times [2019-10-14 23:36:44,105 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:44,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669938448] [2019-10-14 23:36:44,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:44,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:44,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,387 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:44,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669938448] [2019-10-14 23:36:44,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:44,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:44,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170503717] [2019-10-14 23:36:44,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:44,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:44,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:44,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:44,560 INFO L87 Difference]: Start difference. First operand 877 states and 1063 transitions. Second operand 12 states. [2019-10-14 23:36:45,258 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:45,536 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:45,811 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:46,796 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:47,098 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:47,408 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:49,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:49,289 INFO L93 Difference]: Finished difference Result 2014 states and 2715 transitions. [2019-10-14 23:36:49,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:49,289 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2019-10-14 23:36:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:49,299 INFO L225 Difference]: With dead ends: 2014 [2019-10-14 23:36:49,300 INFO L226 Difference]: Without dead ends: 1165 [2019-10-14 23:36:49,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:49,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2019-10-14 23:36:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 899. [2019-10-14 23:36:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-14 23:36:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1087 transitions. [2019-10-14 23:36:49,479 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1087 transitions. Word has length 109 [2019-10-14 23:36:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:49,480 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1087 transitions. [2019-10-14 23:36:49,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1087 transitions. [2019-10-14 23:36:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 23:36:49,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:49,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:49,483 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1757746152, now seen corresponding path program 1 times [2019-10-14 23:36:49,484 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:49,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801482541] [2019-10-14 23:36:49,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,795 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:50,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801482541] [2019-10-14 23:36:50,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:50,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:50,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645897549] [2019-10-14 23:36:50,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:50,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:50,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:50,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:50,011 INFO L87 Difference]: Start difference. First operand 899 states and 1087 transitions. Second operand 10 states. [2019-10-14 23:36:51,381 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:51,667 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:52,002 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:52,335 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:53,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:53,890 INFO L93 Difference]: Finished difference Result 2052 states and 2755 transitions. [2019-10-14 23:36:53,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:53,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2019-10-14 23:36:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:53,899 INFO L225 Difference]: With dead ends: 2052 [2019-10-14 23:36:53,899 INFO L226 Difference]: Without dead ends: 1181 [2019-10-14 23:36:53,902 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:53,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-10-14 23:36:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 919. [2019-10-14 23:36:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-14 23:36:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1107 transitions. [2019-10-14 23:36:54,093 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1107 transitions. Word has length 109 [2019-10-14 23:36:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:54,094 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1107 transitions. [2019-10-14 23:36:54,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1107 transitions. [2019-10-14 23:36:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 23:36:54,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:54,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:54,099 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:54,099 INFO L82 PathProgramCache]: Analyzing trace with hash 950585909, now seen corresponding path program 1 times [2019-10-14 23:36:54,100 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:54,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772591146] [2019-10-14 23:36:54,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,449 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:54,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772591146] [2019-10-14 23:36:54,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:54,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:54,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20368207] [2019-10-14 23:36:54,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:54,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:54,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:54,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:54,606 INFO L87 Difference]: Start difference. First operand 919 states and 1107 transitions. Second operand 8 states. [2019-10-14 23:36:55,089 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:55,710 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189