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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:53,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:53,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:53,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:53,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:53,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:53,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:53,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:53,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:53,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:53,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:53,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:53,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:53,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:53,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:53,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:53,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:53,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:53,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:53,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:53,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:53,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:53,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:53,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:53,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:53,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:53,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:53,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:53,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:53,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:53,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:53,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:53,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:53,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:53,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:53,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:53,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:53,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:53,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:53,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:53,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:53,312 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 23:36:53,326 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:53,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:53,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:53,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:53,328 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:53,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:53,329 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:53,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:53,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:53,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:53,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:53,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:53,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:53,331 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:53,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:53,331 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:53,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:53,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:53,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:53,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:53,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:53,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:53,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:53,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:53,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:53,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:53,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:53,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:53,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:53,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:53,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:53,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:53,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:53,643 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:53,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product46.cil.c [2019-10-14 23:36:53,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168e192cc/43336e38199f42dfb3d37990fa8a6093/FLAG2ef8b162b [2019-10-14 23:36:54,329 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:54,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product46.cil.c [2019-10-14 23:36:54,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168e192cc/43336e38199f42dfb3d37990fa8a6093/FLAG2ef8b162b [2019-10-14 23:36:54,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168e192cc/43336e38199f42dfb3d37990fa8a6093 [2019-10-14 23:36:54,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:54,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:54,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:54,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:54,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:54,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:54" (1/1) ... [2019-10-14 23:36:54,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e60383f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:54, skipping insertion in model container [2019-10-14 23:36:54,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:54" (1/1) ... [2019-10-14 23:36:54,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:54,674 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:55,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:55,114 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:55,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:55,266 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:55,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55 WrapperNode [2019-10-14 23:36:55,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:55,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:55,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:55,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:55,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:55,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:55,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:55,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:55,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (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 23:36:55,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:55,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:55,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:55,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:55,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:55,438 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:55,439 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:55,439 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:36:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:36:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:56,568 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:56,569 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:56,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:56 BoogieIcfgContainer [2019-10-14 23:36:56,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:56,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:56,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:56,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:56,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:54" (1/3) ... [2019-10-14 23:36:56,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfa4f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:56, skipping insertion in model container [2019-10-14 23:36:56,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (2/3) ... [2019-10-14 23:36:56,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfa4f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:56, skipping insertion in model container [2019-10-14 23:36:56,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:56" (3/3) ... [2019-10-14 23:36:56,581 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product46.cil.c [2019-10-14 23:36:56,590 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:56,603 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:56,614 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:56,651 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:56,652 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:56,652 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:56,652 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:56,652 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:56,652 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:56,653 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:56,653 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-10-14 23:36:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:56,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:56,697 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 23:36:56,699 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1153584498, now seen corresponding path program 1 times [2019-10-14 23:36:56,713 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:56,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445003891] [2019-10-14 23:36:56,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:56,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:56,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,418 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,518 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 23:36:57,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445003891] [2019-10-14 23:36:57,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:57,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:36:57,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559424804] [2019-10-14 23:36:57,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:36:57,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:57,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:36:57,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:57,554 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2019-10-14 23:36:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:58,834 INFO L93 Difference]: Finished difference Result 324 states and 422 transitions. [2019-10-14 23:36:58,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:36:58,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:36:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:58,853 INFO L225 Difference]: With dead ends: 324 [2019-10-14 23:36:58,853 INFO L226 Difference]: Without dead ends: 175 [2019-10-14 23:36:58,859 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 23:36:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-14 23:36:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 140. [2019-10-14 23:36:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-14 23:36:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2019-10-14 23:36:59,020 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 52 [2019-10-14 23:36:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:59,020 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2019-10-14 23:36:59,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:36:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2019-10-14 23:36:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:36:59,035 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:59,035 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 23:36:59,036 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:59,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1299238668, now seen corresponding path program 1 times [2019-10-14 23:36:59,040 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:59,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052542794] [2019-10-14 23:36:59,040 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:59,040 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:59,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,445 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,478 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 23:36:59,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052542794] [2019-10-14 23:36:59,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:59,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:59,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757837496] [2019-10-14 23:36:59,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:59,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:59,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:59,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:59,482 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 4 states. [2019-10-14 23:36:59,960 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:00,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:00,987 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2019-10-14 23:37:00,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:37:00,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:37:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:00,991 INFO L225 Difference]: With dead ends: 253 [2019-10-14 23:37:00,991 INFO L226 Difference]: Without dead ends: 159 [2019-10-14 23:37:00,993 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 23:37:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-10-14 23:37:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 131. [2019-10-14 23:37:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-10-14 23:37:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2019-10-14 23:37:01,053 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 53 [2019-10-14 23:37:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:01,053 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2019-10-14 23:37:01,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:37:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2019-10-14 23:37:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:37:01,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:01,056 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 23:37:01,056 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1314633419, now seen corresponding path program 1 times [2019-10-14 23:37:01,057 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:01,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397338498] [2019-10-14 23:37:01,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,397 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,492 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 23:37:01,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397338498] [2019-10-14 23:37:01,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:01,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:01,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477398320] [2019-10-14 23:37:01,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:01,494 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:01,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:01,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:01,495 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 8 states. [2019-10-14 23:37:01,990 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:02,382 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:02,647 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:02,919 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:04,406 INFO L93 Difference]: Finished difference Result 266 states and 327 transitions. [2019-10-14 23:37:04,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:04,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-14 23:37:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:04,416 INFO L225 Difference]: With dead ends: 266 [2019-10-14 23:37:04,416 INFO L226 Difference]: Without dead ends: 159 [2019-10-14 23:37:04,417 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-10-14 23:37:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 131. [2019-10-14 23:37:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-10-14 23:37:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2019-10-14 23:37:04,456 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 58 [2019-10-14 23:37:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:04,457 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2019-10-14 23:37:04,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2019-10-14 23:37:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-14 23:37:04,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:04,458 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] [2019-10-14 23:37:04,459 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:04,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1259242830, now seen corresponding path program 1 times [2019-10-14 23:37:04,459 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:04,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043551589] [2019-10-14 23:37:04,460 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,460 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,788 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,904 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 23:37:04,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043551589] [2019-10-14 23:37:04,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:04,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:04,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241559475] [2019-10-14 23:37:04,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:04,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:04,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:04,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:04,907 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 6 states. [2019-10-14 23:37:05,279 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:06,617 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:07,512 INFO L93 Difference]: Finished difference Result 380 states and 468 transitions. [2019-10-14 23:37:07,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:37:07,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-14 23:37:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:07,519 INFO L225 Difference]: With dead ends: 380 [2019-10-14 23:37:07,519 INFO L226 Difference]: Without dead ends: 273 [2019-10-14 23:37:07,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:37:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-14 23:37:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 230. [2019-10-14 23:37:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2019-10-14 23:37:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 262 transitions. [2019-10-14 23:37:07,650 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 262 transitions. Word has length 71 [2019-10-14 23:37:07,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:07,651 INFO L462 AbstractCegarLoop]: Abstraction has 230 states and 262 transitions. [2019-10-14 23:37:07,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 262 transitions. [2019-10-14 23:37:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-14 23:37:07,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:07,654 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, 1] [2019-10-14 23:37:07,654 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:07,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:07,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2031890280, now seen corresponding path program 1 times [2019-10-14 23:37:07,655 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:07,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630895386] [2019-10-14 23:37:07,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,656 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,001 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,091 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 23:37:08,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630895386] [2019-10-14 23:37:08,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:08,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:08,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631958348] [2019-10-14 23:37:08,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:08,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:08,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:08,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:08,094 INFO L87 Difference]: Start difference. First operand 230 states and 262 transitions. Second operand 8 states. [2019-10-14 23:37:08,535 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:10,292 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:10,576 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:10,851 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,153 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:11,929 INFO L93 Difference]: Finished difference Result 620 states and 768 transitions. [2019-10-14 23:37:11,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:11,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-10-14 23:37:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:11,936 INFO L225 Difference]: With dead ends: 620 [2019-10-14 23:37:11,936 INFO L226 Difference]: Without dead ends: 414 [2019-10-14 23:37:11,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 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 23:37:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-10-14 23:37:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 371. [2019-10-14 23:37:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2019-10-14 23:37:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 430 transitions. [2019-10-14 23:37:12,011 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 430 transitions. Word has length 85 [2019-10-14 23:37:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:12,011 INFO L462 AbstractCegarLoop]: Abstraction has 371 states and 430 transitions. [2019-10-14 23:37:12,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:12,012 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 430 transitions. [2019-10-14 23:37:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:12,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:12,013 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, 1, 1, 1, 1, 1] [2019-10-14 23:37:12,014 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash -797697522, now seen corresponding path program 1 times [2019-10-14 23:37:12,014 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:12,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442485919] [2019-10-14 23:37:12,015 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,015 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,324 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,496 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 23:37:12,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442485919] [2019-10-14 23:37:12,497 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:12,497 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:12,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191046149] [2019-10-14 23:37:12,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:12,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:12,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:12,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:12,499 INFO L87 Difference]: Start difference. First operand 371 states and 430 transitions. Second operand 10 states. [2019-10-14 23:37:13,185 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:14,949 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:15,256 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:15,529 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:15,795 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:16,115 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:17,369 INFO L93 Difference]: Finished difference Result 840 states and 1057 transitions. [2019-10-14 23:37:17,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:17,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-14 23:37:17,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:17,375 INFO L225 Difference]: With dead ends: 840 [2019-10-14 23:37:17,375 INFO L226 Difference]: Without dead ends: 623 [2019-10-14 23:37:17,376 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 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 23:37:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-14 23:37:17,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 551. [2019-10-14 23:37:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2019-10-14 23:37:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 648 transitions. [2019-10-14 23:37:17,471 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 648 transitions. Word has length 89 [2019-10-14 23:37:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:17,472 INFO L462 AbstractCegarLoop]: Abstraction has 551 states and 648 transitions. [2019-10-14 23:37:17,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 648 transitions. [2019-10-14 23:37:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:17,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:17,474 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, 1, 1, 1, 1, 1] [2019-10-14 23:37:17,474 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:17,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1720381105, now seen corresponding path program 1 times [2019-10-14 23:37:17,475 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:17,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695728746] [2019-10-14 23:37:17,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:17,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:17,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,735 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,856 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 23:37:17,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695728746] [2019-10-14 23:37:17,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:17,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:17,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167821442] [2019-10-14 23:37:17,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:17,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:17,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:17,858 INFO L87 Difference]: Start difference. First operand 551 states and 648 transitions. Second operand 8 states. [2019-10-14 23:37:19,112 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:19,368 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:19,654 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:20,800 INFO L93 Difference]: Finished difference Result 1012 states and 1237 transitions. [2019-10-14 23:37:20,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:20,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-14 23:37:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:20,804 INFO L225 Difference]: With dead ends: 1012 [2019-10-14 23:37:20,804 INFO L226 Difference]: Without dead ends: 611 [2019-10-14 23:37:20,806 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 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 23:37:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-10-14 23:37:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 551. [2019-10-14 23:37:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2019-10-14 23:37:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 647 transitions. [2019-10-14 23:37:20,930 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 647 transitions. Word has length 89 [2019-10-14 23:37:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:20,930 INFO L462 AbstractCegarLoop]: Abstraction has 551 states and 647 transitions. [2019-10-14 23:37:20,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 647 transitions. [2019-10-14 23:37:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:20,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:20,932 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, 1, 1, 1, 1, 1] [2019-10-14 23:37:20,932 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1730580689, now seen corresponding path program 1 times [2019-10-14 23:37:20,933 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:20,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920078149] [2019-10-14 23:37:20,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:20,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:20,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,217 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,363 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 23:37:21,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920078149] [2019-10-14 23:37:21,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:21,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:21,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801698097] [2019-10-14 23:37:21,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:21,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:21,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:21,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:21,366 INFO L87 Difference]: Start difference. First operand 551 states and 647 transitions. Second operand 12 states. [2019-10-14 23:37:22,397 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:22,667 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,922 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:23,740 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:24,008 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:24,308 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:24,576 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:25,930 INFO L93 Difference]: Finished difference Result 1143 states and 1401 transitions. [2019-10-14 23:37:25,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:25,930 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-14 23:37:25,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:25,934 INFO L225 Difference]: With dead ends: 1143 [2019-10-14 23:37:25,934 INFO L226 Difference]: Without dead ends: 616 [2019-10-14 23:37:25,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 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 23:37:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-14 23:37:26,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 558. [2019-10-14 23:37:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-14 23:37:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 654 transitions. [2019-10-14 23:37:26,045 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 654 transitions. Word has length 89 [2019-10-14 23:37:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:26,046 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 654 transitions. [2019-10-14 23:37:26,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 654 transitions. [2019-10-14 23:37:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-14 23:37:26,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:26,053 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] [2019-10-14 23:37:26,053 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:26,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1929788468, now seen corresponding path program 1 times [2019-10-14 23:37:26,053 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:26,054 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280589414] [2019-10-14 23:37:26,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:26,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:26,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,341 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,517 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 23:37:26,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280589414] [2019-10-14 23:37:26,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484299653] [2019-10-14 23:37:26,520 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 23:37:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-14 23:37:26,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:26,872 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 23:37:26,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:37:26,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-14 23:37:26,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838009960] [2019-10-14 23:37:26,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:26,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:26,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:26,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:26,874 INFO L87 Difference]: Start difference. First operand 558 states and 654 transitions. Second operand 8 states. [2019-10-14 23:37:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:27,540 INFO L93 Difference]: Finished difference Result 1613 states and 1930 transitions. [2019-10-14 23:37:27,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:27,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2019-10-14 23:37:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:27,547 INFO L225 Difference]: With dead ends: 1613 [2019-10-14 23:37:27,548 INFO L226 Difference]: Without dead ends: 1079 [2019-10-14 23:37:27,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2019-10-14 23:37:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1076. [2019-10-14 23:37:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2019-10-14 23:37:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1264 transitions. [2019-10-14 23:37:27,792 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1264 transitions. Word has length 101 [2019-10-14 23:37:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:27,795 INFO L462 AbstractCegarLoop]: Abstraction has 1076 states and 1264 transitions. [2019-10-14 23:37:27,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1264 transitions. [2019-10-14 23:37:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-14 23:37:27,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:27,798 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] [2019-10-14 23:37:28,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:28,008 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2070358096, now seen corresponding path program 1 times [2019-10-14 23:37:28,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:28,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939407259] [2019-10-14 23:37:28,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:28,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:28,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,358 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:28,512 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 23:37:28,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939407259] [2019-10-14 23:37:28,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:28,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:37:28,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985837123] [2019-10-14 23:37:28,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:37:28,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:28,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:37:28,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:28,515 INFO L87 Difference]: Start difference. First operand 1076 states and 1264 transitions. Second operand 14 states. [2019-10-14 23:37:29,338 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:29,592 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:29,863 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:30,600 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:31,596 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:31,991 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:32,770 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188