/usr/bin/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_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:00:02,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:00:02,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:00:02,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:00:02,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:00:02,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:00:02,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:00:02,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:00:02,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:00:02,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:00:02,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:00:02,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:00:02,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:00:02,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:00:02,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:00:02,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:00:02,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:00:02,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:00:02,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:00:02,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:00:02,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:00:02,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:00:02,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:00:02,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:00:02,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:00:02,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:00:02,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:00:02,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:00:02,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:00:02,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:00:02,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:00:02,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:00:02,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:00:02,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:00:02,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:00:02,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:00:02,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:00:02,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:00:02,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:00:02,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:00:02,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:00:02,308 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 [2019-11-06 22:00:02,333 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:00:02,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:00:02,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:00:02,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:00:02,336 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:00:02,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:00:02,337 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:00:02,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:00:02,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:00:02,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:00:02,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:00:02,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:00:02,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:00:02,340 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:00:02,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:00:02,340 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:00:02,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:00:02,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:00:02,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:00:02,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:00:02,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:00:02,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:02,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:00:02,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:00:02,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:00:02,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:00:02,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:00:02,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:00:02,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:00:02,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:00:02,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:00:02,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:00:02,674 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:00:02,675 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:00:02,675 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product38.cil.c [2019-11-06 22:00:02,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/167188fea/0dad147b24f944f4b8a406c24a77993b/FLAGc41e36a94 [2019-11-06 22:00:03,327 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:00:03,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product38.cil.c [2019-11-06 22:00:03,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/167188fea/0dad147b24f944f4b8a406c24a77993b/FLAGc41e36a94 [2019-11-06 22:00:03,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/167188fea/0dad147b24f944f4b8a406c24a77993b [2019-11-06 22:00:03,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:00:03,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:00:03,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:03,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:00:03,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:00:03,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:03" (1/1) ... [2019-11-06 22:00:03,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51307fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:03, skipping insertion in model container [2019-11-06 22:00:03,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:03" (1/1) ... [2019-11-06 22:00:03,649 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:00:03,687 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:00:04,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:04,100 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:00:04,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:04,218 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:00:04,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04 WrapperNode [2019-11-06 22:00:04,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:04,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:00:04,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:00:04,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:00:04,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (1/1) ... [2019-11-06 22:00:04,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (1/1) ... [2019-11-06 22:00:04,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (1/1) ... [2019-11-06 22:00:04,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (1/1) ... [2019-11-06 22:00:04,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (1/1) ... [2019-11-06 22:00:04,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (1/1) ... [2019-11-06 22:00:04,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (1/1) ... [2019-11-06 22:00:04,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:00:04,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:00:04,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:00:04,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:00:04,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (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 [2019-11-06 22:00:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:00:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:00:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:00:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:00:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:00:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:00:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:00:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:00:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:00:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:00:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:00:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:00:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:00:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:00:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:00:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:00:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:00:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:00:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:00:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:00:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:00:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:00:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:00:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:00:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:00:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:00:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:00:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:00:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:00:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:00:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:00:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:00:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:00:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:00:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:00:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:00:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:00:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:00:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:00:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:00:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:00:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:00:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:00:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:00:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:00:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:00:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:00:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:00:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:00:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:00:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:00:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:00:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:00:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:00:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:00:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:00:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:00:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:00:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:00:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:00:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:00:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:00:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:00:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:00:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:00:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:00:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:00:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:00:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:00:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:00:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:00:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:00:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:00:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:00:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:00:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:00:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:00:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:00:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:00:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:00:05,452 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:00:05,453 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:00:05,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:05 BoogieIcfgContainer [2019-11-06 22:00:05,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:00:05,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:00:05,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:00:05,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:00:05,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:03" (1/3) ... [2019-11-06 22:00:05,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ed7db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:05, skipping insertion in model container [2019-11-06 22:00:05,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:04" (2/3) ... [2019-11-06 22:00:05,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ed7db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:05, skipping insertion in model container [2019-11-06 22:00:05,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:05" (3/3) ... [2019-11-06 22:00:05,463 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product38.cil.c [2019-11-06 22:00:05,474 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:00:05,483 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:00:05,495 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:00:05,523 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:00:05,523 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:00:05,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:00:05,524 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:00:05,524 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:00:05,524 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:00:05,524 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:00:05,524 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:00:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2019-11-06 22:00:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:00:05,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:05,560 INFO L410 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] [2019-11-06 22:00:05,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:05,568 INFO L82 PathProgramCache]: Analyzing trace with hash 639525092, now seen corresponding path program 1 times [2019-11-06 22:00:05,577 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:05,578 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418692247] [2019-11-06 22:00:05,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,263 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:06,362 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418692247] [2019-11-06 22:00:06,363 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:06,364 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:00:06,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120266578] [2019-11-06 22:00:06,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:00:06,375 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:06,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:00:06,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:06,404 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2019-11-06 22:00:07,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:07,628 INFO L93 Difference]: Finished difference Result 308 states and 402 transitions. [2019-11-06 22:00:07,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:00:07,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:00:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:07,646 INFO L225 Difference]: With dead ends: 308 [2019-11-06 22:00:07,646 INFO L226 Difference]: Without dead ends: 166 [2019-11-06 22:00:07,651 INFO L630 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 [2019-11-06 22:00:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-06 22:00:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 133. [2019-11-06 22:00:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-11-06 22:00:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2019-11-06 22:00:07,748 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 52 [2019-11-06 22:00:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:07,749 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2019-11-06 22:00:07,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:00:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2019-11-06 22:00:07,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:00:07,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:07,753 INFO L410 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] [2019-11-06 22:00:07,753 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:07,754 INFO L82 PathProgramCache]: Analyzing trace with hash -510809670, now seen corresponding path program 1 times [2019-11-06 22:00:07,754 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:07,754 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112425536] [2019-11-06 22:00:07,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,109 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:08,169 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112425536] [2019-11-06 22:00:08,169 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:08,170 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:00:08,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71112130] [2019-11-06 22:00:08,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:00:08,172 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:08,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:00:08,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:00:08,173 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2019-11-06 22:00:08,699 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:09,600 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2019-11-06 22:00:09,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:00:09,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-06 22:00:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:09,604 INFO L225 Difference]: With dead ends: 237 [2019-11-06 22:00:09,604 INFO L226 Difference]: Without dead ends: 150 [2019-11-06 22:00:09,605 INFO L630 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 [2019-11-06 22:00:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-06 22:00:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 124. [2019-11-06 22:00:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-06 22:00:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2019-11-06 22:00:09,640 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 53 [2019-11-06 22:00:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:09,641 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2019-11-06 22:00:09,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:00:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2019-11-06 22:00:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 22:00:09,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:09,643 INFO L410 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] [2019-11-06 22:00:09,644 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1651946043, now seen corresponding path program 1 times [2019-11-06 22:00:09,644 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:09,645 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157859977] [2019-11-06 22:00:09,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,027 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:10,110 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157859977] [2019-11-06 22:00:10,110 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:10,110 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:10,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068359430] [2019-11-06 22:00:10,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:10,111 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:10,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:10,112 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2019-11-06 22:00:10,628 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:11,008 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:11,276 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:11,573 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:12,920 INFO L93 Difference]: Finished difference Result 250 states and 307 transitions. [2019-11-06 22:00:12,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:00:12,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-11-06 22:00:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:12,926 INFO L225 Difference]: With dead ends: 250 [2019-11-06 22:00:12,927 INFO L226 Difference]: Without dead ends: 150 [2019-11-06 22:00:12,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-06 22:00:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 124. [2019-11-06 22:00:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-06 22:00:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2019-11-06 22:00:12,980 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 58 [2019-11-06 22:00:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:12,980 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2019-11-06 22:00:12,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2019-11-06 22:00:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 22:00:12,984 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:12,984 INFO L410 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] [2019-11-06 22:00:12,985 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:12,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1339614682, now seen corresponding path program 1 times [2019-11-06 22:00:12,985 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:12,985 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454383954] [2019-11-06 22:00:12,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,281 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:13,371 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454383954] [2019-11-06 22:00:13,371 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:13,372 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:00:13,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690492405] [2019-11-06 22:00:13,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:00:13,373 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:13,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:00:13,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:00:13,374 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2019-11-06 22:00:13,799 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:15,097 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:15,811 INFO L93 Difference]: Finished difference Result 359 states and 443 transitions. [2019-11-06 22:00:15,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:00:15,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-11-06 22:00:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:15,815 INFO L225 Difference]: With dead ends: 359 [2019-11-06 22:00:15,816 INFO L226 Difference]: Without dead ends: 259 [2019-11-06 22:00:15,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:00:15,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-11-06 22:00:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 216. [2019-11-06 22:00:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-11-06 22:00:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2019-11-06 22:00:15,862 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 71 [2019-11-06 22:00:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:15,863 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2019-11-06 22:00:15,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:00:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2019-11-06 22:00:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-06 22:00:15,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:15,867 INFO L410 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] [2019-11-06 22:00:15,867 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:15,867 INFO L82 PathProgramCache]: Analyzing trace with hash 345762925, now seen corresponding path program 1 times [2019-11-06 22:00:15,867 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:15,868 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427876544] [2019-11-06 22:00:15,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,213 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:16,310 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427876544] [2019-11-06 22:00:16,311 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:16,311 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:16,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413982401] [2019-11-06 22:00:16,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:16,314 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:16,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:16,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:16,315 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 8 states. [2019-11-06 22:00:16,775 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:18,200 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:18,507 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:18,776 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:19,076 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:19,932 INFO L93 Difference]: Finished difference Result 578 states and 720 transitions. [2019-11-06 22:00:19,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:00:19,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-11-06 22:00:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:19,937 INFO L225 Difference]: With dead ends: 578 [2019-11-06 22:00:19,937 INFO L226 Difference]: Without dead ends: 386 [2019-11-06 22:00:19,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:00:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2019-11-06 22:00:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 343. [2019-11-06 22:00:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-11-06 22:00:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 398 transitions. [2019-11-06 22:00:20,005 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 398 transitions. Word has length 85 [2019-11-06 22:00:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:20,005 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 398 transitions. [2019-11-06 22:00:20,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 398 transitions. [2019-11-06 22:00:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:00:20,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:20,007 INFO L410 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] [2019-11-06 22:00:20,008 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:20,008 INFO L82 PathProgramCache]: Analyzing trace with hash 535971955, now seen corresponding path program 1 times [2019-11-06 22:00:20,008 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:20,008 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061211606] [2019-11-06 22:00:20,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,325 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:20,444 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061211606] [2019-11-06 22:00:20,444 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:20,444 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:00:20,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8851710] [2019-11-06 22:00:20,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:00:20,445 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:20,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:00:20,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:20,446 INFO L87 Difference]: Start difference. First operand 343 states and 398 transitions. Second operand 10 states. [2019-11-06 22:00:21,022 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:22,448 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:22,771 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:23,049 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:23,310 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:23,692 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:24,649 INFO L93 Difference]: Finished difference Result 784 states and 993 transitions. [2019-11-06 22:00:24,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:00:24,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-11-06 22:00:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:24,656 INFO L225 Difference]: With dead ends: 784 [2019-11-06 22:00:24,656 INFO L226 Difference]: Without dead ends: 581 [2019-11-06 22:00:24,657 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:00:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2019-11-06 22:00:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 509. [2019-11-06 22:00:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-11-06 22:00:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 600 transitions. [2019-11-06 22:00:24,752 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 600 transitions. Word has length 89 [2019-11-06 22:00:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:24,753 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 600 transitions. [2019-11-06 22:00:24,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 600 transitions. [2019-11-06 22:00:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:00:24,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:24,755 INFO L410 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] [2019-11-06 22:00:24,755 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:24,756 INFO L82 PathProgramCache]: Analyzing trace with hash -386711628, now seen corresponding path program 1 times [2019-11-06 22:00:24,756 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:24,756 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339334871] [2019-11-06 22:00:24,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,011 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:25,135 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339334871] [2019-11-06 22:00:25,135 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:25,135 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:25,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817715858] [2019-11-06 22:00:25,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:25,136 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:25,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:25,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:25,137 INFO L87 Difference]: Start difference. First operand 509 states and 600 transitions. Second operand 8 states. [2019-11-06 22:00:25,997 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:26,241 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:26,524 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:27,377 INFO L93 Difference]: Finished difference Result 942 states and 1157 transitions. [2019-11-06 22:00:27,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:00:27,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-11-06 22:00:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:27,383 INFO L225 Difference]: With dead ends: 942 [2019-11-06 22:00:27,383 INFO L226 Difference]: Without dead ends: 569 [2019-11-06 22:00:27,385 INFO L630 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 [2019-11-06 22:00:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-11-06 22:00:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 509. [2019-11-06 22:00:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-11-06 22:00:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 599 transitions. [2019-11-06 22:00:27,494 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 599 transitions. Word has length 89 [2019-11-06 22:00:27,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:27,495 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 599 transitions. [2019-11-06 22:00:27,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 599 transitions. [2019-11-06 22:00:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:00:27,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:27,497 INFO L410 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] [2019-11-06 22:00:27,498 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:27,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1230717130, now seen corresponding path program 1 times [2019-11-06 22:00:27,498 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:27,498 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808421165] [2019-11-06 22:00:27,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,774 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:27,934 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808421165] [2019-11-06 22:00:27,934 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:27,935 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:00:27,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574188484] [2019-11-06 22:00:27,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:00:27,941 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:27,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:00:27,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:27,942 INFO L87 Difference]: Start difference. First operand 509 states and 599 transitions. Second operand 12 states. [2019-11-06 22:00:28,589 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:28,851 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:29,104 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:29,882 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:30,152 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:30,433 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:30,697 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:31,833 INFO L93 Difference]: Finished difference Result 1049 states and 1291 transitions. [2019-11-06 22:00:31,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:00:31,833 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-11-06 22:00:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:31,839 INFO L225 Difference]: With dead ends: 1049 [2019-11-06 22:00:31,839 INFO L226 Difference]: Without dead ends: 564 [2019-11-06 22:00:31,842 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:00:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-11-06 22:00:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 509. [2019-11-06 22:00:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-11-06 22:00:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 597 transitions. [2019-11-06 22:00:31,956 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 597 transitions. Word has length 89 [2019-11-06 22:00:31,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:31,957 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 597 transitions. [2019-11-06 22:00:31,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:00:31,957 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 597 transitions. [2019-11-06 22:00:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-06 22:00:31,960 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:31,960 INFO L410 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, 1] [2019-11-06 22:00:31,960 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash -420721396, now seen corresponding path program 1 times [2019-11-06 22:00:31,961 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:31,961 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788188379] [2019-11-06 22:00:31,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,255 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:32,403 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788188379] [2019-11-06 22:00:32,404 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:32,404 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 22:00:32,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492442513] [2019-11-06 22:00:32,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 22:00:32,406 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:32,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 22:00:32,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:00:32,407 INFO L87 Difference]: Start difference. First operand 509 states and 597 transitions. Second operand 13 states. [2019-11-06 22:00:33,227 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:33,501 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:33,747 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:34,852 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:35,615 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:35,994 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:36,298 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:37,111 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:37,432 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:37,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:37,868 INFO L93 Difference]: Finished difference Result 1036 states and 1240 transitions. [2019-11-06 22:00:37,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:00:37,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2019-11-06 22:00:37,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:37,872 INFO L225 Difference]: With dead ends: 1036 [2019-11-06 22:00:37,872 INFO L226 Difference]: Without dead ends: 551 [2019-11-06 22:00:37,874 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-11-06 22:00:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2019-11-06 22:00:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 509. [2019-11-06 22:00:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-11-06 22:00:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 585 transitions. [2019-11-06 22:00:37,962 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 585 transitions. Word has length 90 [2019-11-06 22:00:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:37,963 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 585 transitions. [2019-11-06 22:00:37,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 22:00:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 585 transitions. [2019-11-06 22:00:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-06 22:00:37,966 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:37,967 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:37,967 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:37,968 INFO L82 PathProgramCache]: Analyzing trace with hash 52445379, now seen corresponding path program 1 times [2019-11-06 22:00:37,968 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:37,968 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264275814] [2019-11-06 22:00:37,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,360 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 22:00:38,528 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264275814] [2019-11-06 22:00:38,528 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304797532] [2019-11-06 22:00:38,528 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 [2019-11-06 22:00:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-06 22:00:38,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:00:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 22:00:39,060 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:00:39,061 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-11-06 22:00:39,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672624690] [2019-11-06 22:00:39,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-06 22:00:39,062 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:39,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-06 22:00:39,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:00:39,063 INFO L87 Difference]: Start difference. First operand 509 states and 585 transitions. Second operand 19 states. [2019-11-06 22:00:39,851 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:40,658 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:41,005 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:41,433 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189