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_spec5_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:20,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:20,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:20,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:20,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:20,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:20,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:20,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:20,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:20,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:20,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:20,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:20,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:20,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:20,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:20,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:20,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:20,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:20,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:20,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:20,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:20,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:20,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:20,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:20,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:20,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:20,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:20,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:20,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:20,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:20,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:20,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:20,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:20,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:20,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:20,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:20,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:20,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:20,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:20,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:20,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:20,496 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 [2019-09-20 13:07:20,516 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:20,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:20,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:20,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:20,519 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:20,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:20,520 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:20,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:20,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:20,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:20,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:20,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:20,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:20,521 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:20,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:20,522 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:20,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:20,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:20,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:20,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:20,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:20,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:20,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:20,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:20,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:20,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:20,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:20,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:20,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:20,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:20,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:20,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:20,595 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:20,599 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:20,600 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2019-09-20 13:07:20,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6884da20c/36ca04fba2754d16bd0ee1e95ee89d45/FLAGbc211176a [2019-09-20 13:07:21,206 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:21,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2019-09-20 13:07:21,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6884da20c/36ca04fba2754d16bd0ee1e95ee89d45/FLAGbc211176a [2019-09-20 13:07:21,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6884da20c/36ca04fba2754d16bd0ee1e95ee89d45 [2019-09-20 13:07:21,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:21,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:21,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:21,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:21,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:21,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:21" (1/1) ... [2019-09-20 13:07:21,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e021dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:21, skipping insertion in model container [2019-09-20 13:07:21,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:21" (1/1) ... [2019-09-20 13:07:21,545 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:21,598 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:22,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:22,111 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:22,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:22,266 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:22,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22 WrapperNode [2019-09-20 13:07:22,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:22,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:22,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:22,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:22,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:22,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:22,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:22,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:22,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (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 [2019-09-20 13:07:22,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:22,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:22,440 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:22,440 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:22,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:22,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:22,440 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:22,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:23,644 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:23,644 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:23,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:23 BoogieIcfgContainer [2019-09-20 13:07:23,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:23,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:23,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:23,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:23,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:21" (1/3) ... [2019-09-20 13:07:23,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c851015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:23, skipping insertion in model container [2019-09-20 13:07:23,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22" (2/3) ... [2019-09-20 13:07:23,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c851015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:23, skipping insertion in model container [2019-09-20 13:07:23,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:23" (3/3) ... [2019-09-20 13:07:23,655 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2019-09-20 13:07:23,664 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:23,674 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:23,691 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:23,726 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:23,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:23,727 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:23,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:23,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:23,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:23,728 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:23,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:23,728 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:23,748 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-09-20 13:07:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:23,759 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:23,760 INFO L407 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] [2019-09-20 13:07:23,765 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1869542645, now seen corresponding path program 1 times [2019-09-20 13:07:23,775 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:23,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:23,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:23,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:23,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:24,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:24,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:24,147 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:24,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:24,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:24,160 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 2 states. [2019-09-20 13:07:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:24,201 INFO L93 Difference]: Finished difference Result 268 states and 331 transitions. [2019-09-20 13:07:24,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:24,203 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:24,216 INFO L225 Difference]: With dead ends: 268 [2019-09-20 13:07:24,217 INFO L226 Difference]: Without dead ends: 136 [2019-09-20 13:07:24,222 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-09-20 13:07:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-09-20 13:07:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-09-20 13:07:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2019-09-20 13:07:24,278 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 59 [2019-09-20 13:07:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:24,278 INFO L475 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2019-09-20 13:07:24,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2019-09-20 13:07:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:24,283 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:24,283 INFO L407 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] [2019-09-20 13:07:24,284 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:24,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1007263159, now seen corresponding path program 1 times [2019-09-20 13:07:24,285 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:24,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:24,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:24,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:24,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:24,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:24,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:24,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:24,451 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 3 states. [2019-09-20 13:07:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:24,504 INFO L93 Difference]: Finished difference Result 217 states and 253 transitions. [2019-09-20 13:07:24,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:24,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:24,511 INFO L225 Difference]: With dead ends: 217 [2019-09-20 13:07:24,512 INFO L226 Difference]: Without dead ends: 127 [2019-09-20 13:07:24,515 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-09-20 13:07:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-09-20 13:07:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-09-20 13:07:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2019-09-20 13:07:24,540 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 60 [2019-09-20 13:07:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:24,540 INFO L475 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2019-09-20 13:07:24,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2019-09-20 13:07:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:07:24,543 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:24,544 INFO L407 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] [2019-09-20 13:07:24,544 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:24,544 INFO L82 PathProgramCache]: Analyzing trace with hash -706056489, now seen corresponding path program 1 times [2019-09-20 13:07:24,545 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:24,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:24,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:24,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:24,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:24,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:24,734 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:24,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:24,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:24,735 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 3 states. [2019-09-20 13:07:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:24,769 INFO L93 Difference]: Finished difference Result 226 states and 267 transitions. [2019-09-20 13:07:24,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:24,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-09-20 13:07:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:24,776 INFO L225 Difference]: With dead ends: 226 [2019-09-20 13:07:24,776 INFO L226 Difference]: Without dead ends: 127 [2019-09-20 13:07:24,779 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-09-20 13:07:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-09-20 13:07:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-09-20 13:07:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2019-09-20 13:07:24,802 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 64 [2019-09-20 13:07:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:24,804 INFO L475 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2019-09-20 13:07:24,804 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2019-09-20 13:07:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-09-20 13:07:24,808 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:24,808 INFO L407 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] [2019-09-20 13:07:24,808 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:24,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1588822882, now seen corresponding path program 1 times [2019-09-20 13:07:24,809 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:24,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:24,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:24,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:25,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:07:25,016 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:07:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:07:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:07:25,017 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand 5 states. [2019-09-20 13:07:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:25,616 INFO L93 Difference]: Finished difference Result 327 states and 395 transitions. [2019-09-20 13:07:25,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:25,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-09-20 13:07:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:25,626 INFO L225 Difference]: With dead ends: 327 [2019-09-20 13:07:25,627 INFO L226 Difference]: Without dead ends: 228 [2019-09-20 13:07:25,628 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-09-20 13:07:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 210. [2019-09-20 13:07:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-09-20 13:07:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 241 transitions. [2019-09-20 13:07:25,677 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 241 transitions. Word has length 77 [2019-09-20 13:07:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:25,680 INFO L475 AbstractCegarLoop]: Abstraction has 210 states and 241 transitions. [2019-09-20 13:07:25,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:07:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 241 transitions. [2019-09-20 13:07:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-20 13:07:25,687 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:25,688 INFO L407 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] [2019-09-20 13:07:25,688 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1801013738, now seen corresponding path program 1 times [2019-09-20 13:07:25,689 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:07:25,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:25,875 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:25,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:25,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:25,876 INFO L87 Difference]: Start difference. First operand 210 states and 241 transitions. Second operand 7 states. [2019-09-20 13:07:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:26,634 INFO L93 Difference]: Finished difference Result 409 states and 485 transitions. [2019-09-20 13:07:26,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:26,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2019-09-20 13:07:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:26,640 INFO L225 Difference]: With dead ends: 409 [2019-09-20 13:07:26,640 INFO L226 Difference]: Without dead ends: 227 [2019-09-20 13:07:26,644 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2019-09-20 13:07:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 209. [2019-09-20 13:07:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2019-09-20 13:07:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2019-09-20 13:07:26,678 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 91 [2019-09-20 13:07:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:26,679 INFO L475 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2019-09-20 13:07:26,679 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2019-09-20 13:07:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:26,681 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:26,681 INFO L407 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] [2019-09-20 13:07:26,682 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:26,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1999801536, now seen corresponding path program 1 times [2019-09-20 13:07:26,682 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:26,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:26,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:26,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:26,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:26,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:26,785 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:26,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:26,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:26,786 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 6 states. [2019-09-20 13:07:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:26,846 INFO L93 Difference]: Finished difference Result 395 states and 458 transitions. [2019-09-20 13:07:26,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:26,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2019-09-20 13:07:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:26,852 INFO L225 Difference]: With dead ends: 395 [2019-09-20 13:07:26,852 INFO L226 Difference]: Without dead ends: 214 [2019-09-20 13:07:26,853 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-09-20 13:07:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2019-09-20 13:07:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2019-09-20 13:07:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 243 transitions. [2019-09-20 13:07:26,889 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 243 transitions. Word has length 92 [2019-09-20 13:07:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:26,891 INFO L475 AbstractCegarLoop]: Abstraction has 214 states and 243 transitions. [2019-09-20 13:07:26,891 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 243 transitions. [2019-09-20 13:07:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:26,894 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:26,895 INFO L407 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] [2019-09-20 13:07:26,895 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:26,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1298201662, now seen corresponding path program 1 times [2019-09-20 13:07:26,896 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:26,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:26,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:26,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:27,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:27,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:27,010 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:27,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:27,012 INFO L87 Difference]: Start difference. First operand 214 states and 243 transitions. Second operand 8 states. [2019-09-20 13:07:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:27,057 INFO L93 Difference]: Finished difference Result 407 states and 475 transitions. [2019-09-20 13:07:27,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:27,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-09-20 13:07:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:27,061 INFO L225 Difference]: With dead ends: 407 [2019-09-20 13:07:27,062 INFO L226 Difference]: Without dead ends: 221 [2019-09-20 13:07:27,063 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-09-20 13:07:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2019-09-20 13:07:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2019-09-20 13:07:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 247 transitions. [2019-09-20 13:07:27,089 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 247 transitions. Word has length 92 [2019-09-20 13:07:27,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:27,091 INFO L475 AbstractCegarLoop]: Abstraction has 218 states and 247 transitions. [2019-09-20 13:07:27,091 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 247 transitions. [2019-09-20 13:07:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:27,095 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:27,095 INFO L407 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] [2019-09-20 13:07:27,095 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash 427279235, now seen corresponding path program 1 times [2019-09-20 13:07:27,096 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:27,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:27,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:27,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:27,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:27,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:27,203 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:27,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:27,204 INFO L87 Difference]: Start difference. First operand 218 states and 247 transitions. Second operand 4 states. [2019-09-20 13:07:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:27,480 INFO L93 Difference]: Finished difference Result 633 states and 754 transitions. [2019-09-20 13:07:27,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:27,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-09-20 13:07:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:27,484 INFO L225 Difference]: With dead ends: 633 [2019-09-20 13:07:27,484 INFO L226 Difference]: Without dead ends: 443 [2019-09-20 13:07:27,485 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2019-09-20 13:07:27,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 434. [2019-09-20 13:07:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-09-20 13:07:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 506 transitions. [2019-09-20 13:07:27,519 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 506 transitions. Word has length 92 [2019-09-20 13:07:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:27,519 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 506 transitions. [2019-09-20 13:07:27,519 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 506 transitions. [2019-09-20 13:07:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-20 13:07:27,521 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:27,521 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:27,522 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1298280163, now seen corresponding path program 1 times [2019-09-20 13:07:27,522 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:27,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:27,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:27,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:27,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:27,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:27,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:27,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:27,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:27,751 INFO L87 Difference]: Start difference. First operand 434 states and 506 transitions. Second operand 9 states. [2019-09-20 13:07:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,798 INFO L93 Difference]: Finished difference Result 1133 states and 1386 transitions. [2019-09-20 13:07:28,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:28,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-20 13:07:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,806 INFO L225 Difference]: With dead ends: 1133 [2019-09-20 13:07:28,806 INFO L226 Difference]: Without dead ends: 795 [2019-09-20 13:07:28,809 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2019-09-20 13:07:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 722. [2019-09-20 13:07:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-09-20 13:07:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 832 transitions. [2019-09-20 13:07:28,872 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 832 transitions. Word has length 96 [2019-09-20 13:07:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,873 INFO L475 AbstractCegarLoop]: Abstraction has 722 states and 832 transitions. [2019-09-20 13:07:28,873 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 832 transitions. [2019-09-20 13:07:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-09-20 13:07:28,876 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,876 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:07:28,877 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1033047505, now seen corresponding path program 1 times [2019-09-20 13:07:28,878 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:07:29,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:29,060 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:29,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:29,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:29,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:29,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:29,513 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:29,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:29,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:29,514 INFO L87 Difference]: Start difference. First operand 722 states and 832 transitions. Second operand 16 states. [2019-09-20 13:07:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:30,754 INFO L93 Difference]: Finished difference Result 1616 states and 1943 transitions. [2019-09-20 13:07:30,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:07:30,755 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2019-09-20 13:07:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:30,761 INFO L225 Difference]: With dead ends: 1616 [2019-09-20 13:07:30,761 INFO L226 Difference]: Without dead ends: 988 [2019-09-20 13:07:30,764 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:07:30,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2019-09-20 13:07:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 868. [2019-09-20 13:07:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-09-20 13:07:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1012 transitions. [2019-09-20 13:07:30,821 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1012 transitions. Word has length 155 [2019-09-20 13:07:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:30,822 INFO L475 AbstractCegarLoop]: Abstraction has 868 states and 1012 transitions. [2019-09-20 13:07:30,822 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1012 transitions. [2019-09-20 13:07:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-09-20 13:07:30,828 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:30,829 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:07:30,829 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash 927207093, now seen corresponding path program 1 times [2019-09-20 13:07:30,829 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:30,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:30,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:30,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:30,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-09-20 13:07:31,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:31,099 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:31,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:31,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 199 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:31,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:31,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:07:31,661 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:07:31,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:07:31,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:31,662 INFO L87 Difference]: Start difference. First operand 868 states and 1012 transitions. Second operand 19 states. [2019-09-20 13:07:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:37,117 INFO L93 Difference]: Finished difference Result 3182 states and 4481 transitions. [2019-09-20 13:07:37,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-20 13:07:37,117 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 273 [2019-09-20 13:07:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:37,136 INFO L225 Difference]: With dead ends: 3182 [2019-09-20 13:07:37,136 INFO L226 Difference]: Without dead ends: 2350 [2019-09-20 13:07:37,145 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=523, Invalid=3137, Unknown=0, NotChecked=0, Total=3660 [2019-09-20 13:07:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2019-09-20 13:07:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1635. [2019-09-20 13:07:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1635 states. [2019-09-20 13:07:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1842 transitions. [2019-09-20 13:07:37,284 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1842 transitions. Word has length 273 [2019-09-20 13:07:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:37,287 INFO L475 AbstractCegarLoop]: Abstraction has 1635 states and 1842 transitions. [2019-09-20 13:07:37,289 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:07:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1842 transitions. [2019-09-20 13:07:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-09-20 13:07:37,299 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:37,299 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:37,300 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:37,300 INFO L82 PathProgramCache]: Analyzing trace with hash 759645047, now seen corresponding path program 1 times [2019-09-20 13:07:37,300 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:37,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:37,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:37,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:37,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 93 proven. 53 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-09-20 13:07:37,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:37,510 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:37,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:37,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:37,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 233 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-20 13:07:37,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:37,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:37,944 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:37,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:37,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:37,944 INFO L87 Difference]: Start difference. First operand 1635 states and 1842 transitions. Second operand 20 states. [2019-09-20 13:07:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:39,792 INFO L93 Difference]: Finished difference Result 3086 states and 3495 transitions. [2019-09-20 13:07:39,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:39,793 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 289 [2019-09-20 13:07:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:39,802 INFO L225 Difference]: With dead ends: 3086 [2019-09-20 13:07:39,802 INFO L226 Difference]: Without dead ends: 1639 [2019-09-20 13:07:39,807 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2019-09-20 13:07:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1635. [2019-09-20 13:07:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1635 states. [2019-09-20 13:07:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1837 transitions. [2019-09-20 13:07:39,898 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1837 transitions. Word has length 289 [2019-09-20 13:07:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:39,898 INFO L475 AbstractCegarLoop]: Abstraction has 1635 states and 1837 transitions. [2019-09-20 13:07:39,898 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1837 transitions. [2019-09-20 13:07:39,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-09-20 13:07:39,906 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:39,906 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:39,907 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:39,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1408030871, now seen corresponding path program 1 times [2019-09-20 13:07:39,907 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:39,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:39,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:39,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:39,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 91 proven. 44 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-09-20 13:07:40,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:40,202 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:40,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:40,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:07:40,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-09-20 13:07:40,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:40,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:07:40,782 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:07:40,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:07:40,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:07:40,784 INFO L87 Difference]: Start difference. First operand 1635 states and 1837 transitions. Second operand 14 states. [2019-09-20 13:07:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:43,198 INFO L93 Difference]: Finished difference Result 3504 states and 4272 transitions. [2019-09-20 13:07:43,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:43,198 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 290 [2019-09-20 13:07:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:43,215 INFO L225 Difference]: With dead ends: 3504 [2019-09-20 13:07:43,215 INFO L226 Difference]: Without dead ends: 2589 [2019-09-20 13:07:43,219 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2019-09-20 13:07:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2009. [2019-09-20 13:07:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2019-09-20 13:07:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2263 transitions. [2019-09-20 13:07:43,365 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2263 transitions. Word has length 290 [2019-09-20 13:07:43,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:43,367 INFO L475 AbstractCegarLoop]: Abstraction has 2009 states and 2263 transitions. [2019-09-20 13:07:43,367 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:07:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2263 transitions. [2019-09-20 13:07:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2019-09-20 13:07:43,378 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:43,379 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:07:43,379 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1059761089, now seen corresponding path program 1 times [2019-09-20 13:07:43,380 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:43,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:43,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:43,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 116 proven. 88 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2019-09-20 13:07:43,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:43,933 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:44,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:44,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-20 13:07:44,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 212 proven. 49 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:44,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:44,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 21 [2019-09-20 13:07:44,431 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-20 13:07:44,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-20 13:07:44,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2019-09-20 13:07:44,432 INFO L87 Difference]: Start difference. First operand 2009 states and 2263 transitions. Second operand 21 states. [2019-09-20 13:07:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:46,993 INFO L93 Difference]: Finished difference Result 3221 states and 3651 transitions. [2019-09-20 13:07:46,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:07:46,995 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 358 [2019-09-20 13:07:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:46,996 INFO L225 Difference]: With dead ends: 3221 [2019-09-20 13:07:46,996 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:07:47,004 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 369 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=256, Invalid=1226, Unknown=0, NotChecked=0, Total=1482 [2019-09-20 13:07:47,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:07:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:07:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:07:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:07:47,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 358 [2019-09-20 13:07:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:47,006 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:07:47,006 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-20 13:07:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:07:47,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:07:47,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:07:47,544 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 103 [2019-09-20 13:07:48,449 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 115 [2019-09-20 13:07:48,977 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 141 [2019-09-20 13:07:49,242 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 82 [2019-09-20 13:07:49,791 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 30 [2019-09-20 13:07:50,339 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 36 [2019-09-20 13:07:50,636 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2019-09-20 13:07:51,027 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 30 [2019-09-20 13:07:51,459 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2019-09-20 13:07:51,794 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 38 [2019-09-20 13:07:53,266 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 180 DAG size of output: 62 [2019-09-20 13:07:55,353 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 224 DAG size of output: 71