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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:20,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:20,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:20,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:20,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:20,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:20,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:20,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:20,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:20,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:20,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:20,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:20,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:20,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:20,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:20,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:20,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:20,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:20,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:20,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:20,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:20,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:20,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:20,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:20,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:20,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:20,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:20,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:20,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:20,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:20,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:20,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:20,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:20,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:20,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:20,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:20,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:20,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:20,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:20,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:20,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:20,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:20,578 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:20,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:20,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:20,579 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:20,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:20,580 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:20,580 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:20,580 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:20,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:20,580 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:20,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:20,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:20,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:20,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:20,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:20,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:20,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:20,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:20,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:20,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:20,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:20,584 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:20,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:20,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:20,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:20,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:20,585 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:20,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:20,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:20,586 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:20,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:20,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:20,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:20,659 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:20,660 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:20,661 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-09-20 13:30:20,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5898998/25718580ade24164a330688a6803f12a/FLAGf0c3f070c [2019-09-20 13:30:21,318 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:21,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-09-20 13:30:21,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5898998/25718580ade24164a330688a6803f12a/FLAGf0c3f070c [2019-09-20 13:30:21,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5898998/25718580ade24164a330688a6803f12a [2019-09-20 13:30:21,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:21,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:21,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:21,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:21,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:21,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c37dd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:21, skipping insertion in model container [2019-09-20 13:30:21,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:21" (1/1) ... [2019-09-20 13:30:21,655 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:21,717 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:22,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:22,135 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:22,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:22,282 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:22,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22 WrapperNode [2019-09-20 13:30:22,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:22,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:22,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:22,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:22,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (1/1) ... [2019-09-20 13:30:22,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (1/1) ... [2019-09-20 13:30:22,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (1/1) ... [2019-09-20 13:30:22,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (1/1) ... [2019-09-20 13:30:22,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (1/1) ... [2019-09-20 13:30:22,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (1/1) ... [2019-09-20 13:30:22,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (1/1) ... [2019-09-20 13:30:22,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:22,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:22,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:22,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:22,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (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 13:30:22,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:22,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:22,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:30:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:22,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:30:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:23,892 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:23,892 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:23,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:23 BoogieIcfgContainer [2019-09-20 13:30:23,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:23,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:23,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:23,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:23,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:21" (1/3) ... [2019-09-20 13:30:23,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15195be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:23, skipping insertion in model container [2019-09-20 13:30:23,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:22" (2/3) ... [2019-09-20 13:30:23,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15195be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:23, skipping insertion in model container [2019-09-20 13:30:23,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:23" (3/3) ... [2019-09-20 13:30:23,905 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product60.cil.c [2019-09-20 13:30:23,916 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:23,926 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:23,943 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:23,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:23,966 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:23,966 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:23,966 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:23,966 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:23,967 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:23,967 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:23,967 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-09-20 13:30:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:24,012 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:24,013 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:24,016 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:24,021 INFO L82 PathProgramCache]: Analyzing trace with hash 694173544, now seen corresponding path program 1 times [2019-09-20 13:30:24,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:24,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:24,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,087 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:24,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:24,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:24,440 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:24,447 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:24,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:24,470 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2019-09-20 13:30:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:24,525 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2019-09-20 13:30:24,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:24,527 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:24,550 INFO L225 Difference]: With dead ends: 166 [2019-09-20 13:30:24,550 INFO L226 Difference]: Without dead ends: 155 [2019-09-20 13:30:24,554 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 13:30:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-09-20 13:30:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-09-20 13:30:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-09-20 13:30:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2019-09-20 13:30:24,646 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 51 [2019-09-20 13:30:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:24,647 INFO L475 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2019-09-20 13:30:24,647 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2019-09-20 13:30:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:24,659 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:24,660 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:24,660 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:24,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1863175654, now seen corresponding path program 1 times [2019-09-20 13:30:24,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:24,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:24,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,665 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:24,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:24,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:24,815 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:24,817 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:24,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:24,818 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand 3 states. [2019-09-20 13:30:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:24,853 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2019-09-20 13:30:24,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:24,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:24,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:24,856 INFO L225 Difference]: With dead ends: 146 [2019-09-20 13:30:24,857 INFO L226 Difference]: Without dead ends: 146 [2019-09-20 13:30:24,858 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 13:30:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-20 13:30:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-20 13:30:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-20 13:30:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 170 transitions. [2019-09-20 13:30:24,870 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 170 transitions. Word has length 52 [2019-09-20 13:30:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:24,870 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 170 transitions. [2019-09-20 13:30:24,870 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 170 transitions. [2019-09-20 13:30:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:30:24,872 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:24,873 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:24,873 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:24,873 INFO L82 PathProgramCache]: Analyzing trace with hash 284161781, now seen corresponding path program 1 times [2019-09-20 13:30:24,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:24,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:24,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:24,877 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:25,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:25,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:25,067 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:25,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:25,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:25,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:25,068 INFO L87 Difference]: Start difference. First operand 146 states and 170 transitions. Second operand 7 states. [2019-09-20 13:30:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:25,625 INFO L93 Difference]: Finished difference Result 315 states and 378 transitions. [2019-09-20 13:30:25,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:25,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-20 13:30:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:25,630 INFO L225 Difference]: With dead ends: 315 [2019-09-20 13:30:25,631 INFO L226 Difference]: Without dead ends: 315 [2019-09-20 13:30:25,631 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-09-20 13:30:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 303. [2019-09-20 13:30:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2019-09-20 13:30:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 366 transitions. [2019-09-20 13:30:25,687 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 366 transitions. Word has length 57 [2019-09-20 13:30:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:25,687 INFO L475 AbstractCegarLoop]: Abstraction has 303 states and 366 transitions. [2019-09-20 13:30:25,687 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 366 transitions. [2019-09-20 13:30:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-20 13:30:25,690 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:25,690 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:25,690 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:25,691 INFO L82 PathProgramCache]: Analyzing trace with hash 367003092, now seen corresponding path program 1 times [2019-09-20 13:30:25,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:25,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:25,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:25,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:25,695 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:25,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:25,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:25,790 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:25,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:25,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:25,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:25,791 INFO L87 Difference]: Start difference. First operand 303 states and 366 transitions. Second operand 6 states. [2019-09-20 13:30:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,038 INFO L93 Difference]: Finished difference Result 560 states and 678 transitions. [2019-09-20 13:30:26,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:26,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-20 13:30:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,044 INFO L225 Difference]: With dead ends: 560 [2019-09-20 13:30:26,044 INFO L226 Difference]: Without dead ends: 560 [2019-09-20 13:30:26,045 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-09-20 13:30:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 554. [2019-09-20 13:30:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-20 13:30:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 672 transitions. [2019-09-20 13:30:26,087 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 672 transitions. Word has length 62 [2019-09-20 13:30:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,088 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 672 transitions. [2019-09-20 13:30:26,088 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 672 transitions. [2019-09-20 13:30:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-20 13:30:26,090 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,090 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:26,091 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,091 INFO L82 PathProgramCache]: Analyzing trace with hash -612062288, now seen corresponding path program 1 times [2019-09-20 13:30:26,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,095 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:26,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:26,204 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:26,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:26,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:26,206 INFO L87 Difference]: Start difference. First operand 554 states and 672 transitions. Second operand 7 states. [2019-09-20 13:30:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,935 INFO L93 Difference]: Finished difference Result 889 states and 1122 transitions. [2019-09-20 13:30:26,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:26,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-20 13:30:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,942 INFO L225 Difference]: With dead ends: 889 [2019-09-20 13:30:26,943 INFO L226 Difference]: Without dead ends: 889 [2019-09-20 13:30:26,943 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:30:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2019-09-20 13:30:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 791. [2019-09-20 13:30:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-09-20 13:30:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 955 transitions. [2019-09-20 13:30:27,021 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 955 transitions. Word has length 66 [2019-09-20 13:30:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,022 INFO L475 AbstractCegarLoop]: Abstraction has 791 states and 955 transitions. [2019-09-20 13:30:27,022 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:27,022 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 955 transitions. [2019-09-20 13:30:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-20 13:30:27,025 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,025 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:27,025 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash 637474211, now seen corresponding path program 1 times [2019-09-20 13:30:27,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,029 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,151 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 13:30:27,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:27,152 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,152 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:27,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:27,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:27,153 INFO L87 Difference]: Start difference. First operand 791 states and 955 transitions. Second operand 6 states. [2019-09-20 13:30:27,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,209 INFO L93 Difference]: Finished difference Result 819 states and 987 transitions. [2019-09-20 13:30:27,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:27,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-09-20 13:30:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,215 INFO L225 Difference]: With dead ends: 819 [2019-09-20 13:30:27,215 INFO L226 Difference]: Without dead ends: 819 [2019-09-20 13:30:27,216 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 13:30:27,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2019-09-20 13:30:27,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2019-09-20 13:30:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-09-20 13:30:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 975 transitions. [2019-09-20 13:30:27,250 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 975 transitions. Word has length 104 [2019-09-20 13:30:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,250 INFO L475 AbstractCegarLoop]: Abstraction has 811 states and 975 transitions. [2019-09-20 13:30:27,250 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 975 transitions. [2019-09-20 13:30:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-20 13:30:27,253 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,254 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:27,254 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1729220383, now seen corresponding path program 1 times [2019-09-20 13:30:27,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,258 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,354 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 13:30:27,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:27,355 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,355 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:27,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:27,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:27,356 INFO L87 Difference]: Start difference. First operand 811 states and 975 transitions. Second operand 8 states. [2019-09-20 13:30:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,388 INFO L93 Difference]: Finished difference Result 839 states and 1003 transitions. [2019-09-20 13:30:27,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:27,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-09-20 13:30:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,394 INFO L225 Difference]: With dead ends: 839 [2019-09-20 13:30:27,394 INFO L226 Difference]: Without dead ends: 839 [2019-09-20 13:30:27,395 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 13:30:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-09-20 13:30:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 827. [2019-09-20 13:30:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-09-20 13:30:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 991 transitions. [2019-09-20 13:30:27,426 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 991 transitions. Word has length 104 [2019-09-20 13:30:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,427 INFO L475 AbstractCegarLoop]: Abstraction has 827 states and 991 transitions. [2019-09-20 13:30:27,427 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 991 transitions. [2019-09-20 13:30:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-20 13:30:27,430 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,430 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:27,430 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1969760512, now seen corresponding path program 1 times [2019-09-20 13:30:27,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,434 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,510 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 13:30:27,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:27,511 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:27,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:27,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:27,513 INFO L87 Difference]: Start difference. First operand 827 states and 991 transitions. Second operand 4 states. [2019-09-20 13:30:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,772 INFO L93 Difference]: Finished difference Result 1814 states and 2263 transitions. [2019-09-20 13:30:27,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:27,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-09-20 13:30:27,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,782 INFO L225 Difference]: With dead ends: 1814 [2019-09-20 13:30:27,783 INFO L226 Difference]: Without dead ends: 1814 [2019-09-20 13:30:27,783 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 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 13:30:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2019-09-20 13:30:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1783. [2019-09-20 13:30:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2019-09-20 13:30:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2191 transitions. [2019-09-20 13:30:27,888 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2191 transitions. Word has length 104 [2019-09-20 13:30:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,889 INFO L475 AbstractCegarLoop]: Abstraction has 1783 states and 2191 transitions. [2019-09-20 13:30:27,889 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2191 transitions. [2019-09-20 13:30:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:30:27,893 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:27,894 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,894 INFO L82 PathProgramCache]: Analyzing trace with hash 672707866, now seen corresponding path program 1 times [2019-09-20 13:30:27,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,897 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:28,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:28,081 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:28,082 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 109 with the following transitions: [2019-09-20 13:30:28,085 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [184], [190], [198], [199], [202], [204], [207], [209], [212], [215], [236], [237], [238], [240], [245], [248], [251], [253], [258], [260], [261], [262], [263], [269], [273], [315], [318], [320], [323], [333], [336], [340], [341], [344], [345], [346], [370], [372], [373], [440], [441], [446], [448], [451], [459], [460], [461], [462], [463], [464], [465], [466], [467], [509], [510], [511], [512], [513], [514], [519], [523], [524], [525], [526], [527], [529], [530], [531], [532], [533], [534], [537], [538], [539], [545], [546], [547], [548], [555], [556], [557], [559], [560], [565], [566], [567] [2019-09-20 13:30:28,141 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:28,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:28,219 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:28,221 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:30:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,227 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:28,274 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:28,274 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:28,278 INFO L420 sIntCurrentIteration]: We unified 107 AI predicates to 107 [2019-09-20 13:30:28,279 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:28,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:28,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:30:28,280 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,281 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:28,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:28,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:28,281 INFO L87 Difference]: Start difference. First operand 1783 states and 2191 transitions. Second operand 2 states. [2019-09-20 13:30:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,282 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:28,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:28,282 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 108 [2019-09-20 13:30:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,283 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:28,283 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:28,283 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 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 13:30:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:28,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:28,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2019-09-20 13:30:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,285 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:28,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:28,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:28,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:28 BoogieIcfgContainer [2019-09-20 13:30:28,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:28,293 INFO L168 Benchmark]: Toolchain (without parser) took 6655.10 ms. Allocated memory was 135.8 MB in the beginning and 369.1 MB in the end (delta: 233.3 MB). Free memory was 81.8 MB in the beginning and 265.6 MB in the end (delta: -183.7 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:28,294 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:30:28,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.33 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 81.8 MB in the beginning and 160.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:28,295 INFO L168 Benchmark]: Boogie Preprocessor took 89.81 ms. Allocated memory is still 197.1 MB. Free memory was 160.8 MB in the beginning and 155.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:28,296 INFO L168 Benchmark]: RCFGBuilder took 1520.39 ms. Allocated memory was 197.1 MB in the beginning and 212.9 MB in the end (delta: 15.7 MB). Free memory was 155.9 MB in the beginning and 183.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:28,297 INFO L168 Benchmark]: TraceAbstraction took 4394.70 ms. Allocated memory was 212.9 MB in the beginning and 369.1 MB in the end (delta: 156.2 MB). Free memory was 183.1 MB in the beginning and 265.6 MB in the end (delta: -82.4 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:28,301 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.33 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 81.8 MB in the beginning and 160.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.81 ms. Allocated memory is still 197.1 MB. Free memory was 160.8 MB in the beginning and 155.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1520.39 ms. Allocated memory was 197.1 MB in the beginning and 212.9 MB in the end (delta: 15.7 MB). Free memory was 155.9 MB in the beginning and 183.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4394.70 ms. Allocated memory was 212.9 MB in the beginning and 369.1 MB in the end (delta: 156.2 MB). Free memory was 183.1 MB in the beginning and 265.6 MB in the end (delta: -82.4 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 257 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1541 SDtfs, 840 SDslu, 3688 SDs, 0 SdLazy, 1008 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1783occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0373831775700935 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 167 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 708 NumberOfCodeBlocks, 708 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 92658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...