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_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:46,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:46,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:46,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:46,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:46,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:46,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:46,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:46,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:46,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:46,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:46,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:46,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:46,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:46,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:46,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:46,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:46,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:46,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:46,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:46,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:46,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:46,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:46,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:46,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:46,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:46,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:46,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:46,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:46,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:46,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:46,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:46,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:46,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:46,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:46,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:46,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:46,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:46,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:46,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:46,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:46,610 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 13:31:46,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:46,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:46,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:46,626 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:46,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:46,626 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:46,627 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:46,627 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:46,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:46,627 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:46,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:46,628 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:46,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:46,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:46,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:46,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:46,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:46,629 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:46,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:46,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:46,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:46,630 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:46,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:46,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:46,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:46,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:46,631 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:46,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:46,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:46,632 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:46,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:46,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:46,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:46,700 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:46,701 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:46,702 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2019-09-20 13:31:46,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bbc962f8/a7f935a75a9a471fb8c20ba8ed8b7b8b/FLAG8fc6d3cd7 [2019-09-20 13:31:47,290 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:47,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2019-09-20 13:31:47,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bbc962f8/a7f935a75a9a471fb8c20ba8ed8b7b8b/FLAG8fc6d3cd7 [2019-09-20 13:31:47,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bbc962f8/a7f935a75a9a471fb8c20ba8ed8b7b8b [2019-09-20 13:31:47,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:47,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:47,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:47,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:47,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:47,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:47" (1/1) ... [2019-09-20 13:31:47,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48434802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:47, skipping insertion in model container [2019-09-20 13:31:47,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:47" (1/1) ... [2019-09-20 13:31:47,586 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:47,652 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:48,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:48,167 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:48,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:48,308 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:48,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48 WrapperNode [2019-09-20 13:31:48,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:48,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:48,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:48,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:48,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (1/1) ... [2019-09-20 13:31:48,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:48,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:48,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:48,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:48,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (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 13:31:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:48,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:49,738 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:49,739 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:49,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:49 BoogieIcfgContainer [2019-09-20 13:31:49,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:49,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:49,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:49,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:49,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:47" (1/3) ... [2019-09-20 13:31:49,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e13b20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:49, skipping insertion in model container [2019-09-20 13:31:49,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:48" (2/3) ... [2019-09-20 13:31:49,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e13b20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:49, skipping insertion in model container [2019-09-20 13:31:49,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:49" (3/3) ... [2019-09-20 13:31:49,751 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2019-09-20 13:31:49,761 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:49,773 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:49,790 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:49,825 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:49,825 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:49,826 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:49,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:49,826 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:49,827 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:49,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:49,828 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2019-09-20 13:31:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:49,877 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:49,878 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 13:31:49,882 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash -748532366, now seen corresponding path program 1 times [2019-09-20 13:31:49,891 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:49,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:49,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,950 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:50,278 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 13:31:50,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:50,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:50,281 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:50,287 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:50,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:50,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:50,307 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 2 states. [2019-09-20 13:31:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:50,352 INFO L93 Difference]: Finished difference Result 174 states and 205 transitions. [2019-09-20 13:31:50,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:50,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:50,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:50,368 INFO L225 Difference]: With dead ends: 174 [2019-09-20 13:31:50,368 INFO L226 Difference]: Without dead ends: 163 [2019-09-20 13:31:50,370 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 13:31:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-09-20 13:31:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2019-09-20 13:31:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-09-20 13:31:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2019-09-20 13:31:50,424 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 59 [2019-09-20 13:31:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:50,425 INFO L475 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2019-09-20 13:31:50,425 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2019-09-20 13:31:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:50,429 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:50,430 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] [2019-09-20 13:31:50,430 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash -637468051, now seen corresponding path program 1 times [2019-09-20 13:31:50,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:50,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:50,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,434 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:50,575 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 13:31:50,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:50,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:50,576 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:50,579 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:50,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:50,580 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 3 states. [2019-09-20 13:31:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:50,607 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2019-09-20 13:31:50,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:50,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:50,611 INFO L225 Difference]: With dead ends: 154 [2019-09-20 13:31:50,611 INFO L226 Difference]: Without dead ends: 154 [2019-09-20 13:31:50,612 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 13:31:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-20 13:31:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-09-20 13:31:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-09-20 13:31:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2019-09-20 13:31:50,636 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 60 [2019-09-20 13:31:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:50,637 INFO L475 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2019-09-20 13:31:50,637 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2019-09-20 13:31:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:31:50,641 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:50,642 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 13:31:50,642 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash -733015768, now seen corresponding path program 1 times [2019-09-20 13:31:50,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:50,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:50,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:50,646 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:50,812 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 13:31:50,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:50,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:50,813 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:50,813 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:50,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:50,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:50,814 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand 7 states. [2019-09-20 13:31:51,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:51,215 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2019-09-20 13:31:51,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:51,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:31:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:51,218 INFO L225 Difference]: With dead ends: 154 [2019-09-20 13:31:51,219 INFO L226 Difference]: Without dead ends: 154 [2019-09-20 13:31:51,219 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 13:31:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-20 13:31:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-09-20 13:31:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-09-20 13:31:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2019-09-20 13:31:51,233 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 64 [2019-09-20 13:31:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:51,236 INFO L475 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2019-09-20 13:31:51,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2019-09-20 13:31:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-20 13:31:51,240 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:51,240 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] [2019-09-20 13:31:51,241 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:51,241 INFO L82 PathProgramCache]: Analyzing trace with hash 330531379, now seen corresponding path program 1 times [2019-09-20 13:31:51,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:51,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:51,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:51,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:51,245 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:51,377 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 13:31:51,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:51,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:31:51,377 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:51,378 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:31:51,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:31:51,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:31:51,379 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 5 states. [2019-09-20 13:31:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:52,043 INFO L93 Difference]: Finished difference Result 273 states and 314 transitions. [2019-09-20 13:31:52,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:52,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2019-09-20 13:31:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:52,047 INFO L225 Difference]: With dead ends: 273 [2019-09-20 13:31:52,052 INFO L226 Difference]: Without dead ends: 273 [2019-09-20 13:31:52,053 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 13:31:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-09-20 13:31:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 255. [2019-09-20 13:31:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2019-09-20 13:31:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2019-09-20 13:31:52,097 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 82 [2019-09-20 13:31:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:52,097 INFO L475 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2019-09-20 13:31:52,098 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:31:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2019-09-20 13:31:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-20 13:31:52,108 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:52,108 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 13:31:52,108 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:52,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:52,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1154984362, now seen corresponding path program 1 times [2019-09-20 13:31:52,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:52,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:52,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:52,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:52,115 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:52,269 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 13:31:52,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:52,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:52,269 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:52,270 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:52,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:52,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:52,271 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand 7 states. [2019-09-20 13:31:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:53,033 INFO L93 Difference]: Finished difference Result 272 states and 314 transitions. [2019-09-20 13:31:53,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:53,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-09-20 13:31:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:53,036 INFO L225 Difference]: With dead ends: 272 [2019-09-20 13:31:53,037 INFO L226 Difference]: Without dead ends: 272 [2019-09-20 13:31:53,037 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 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 13:31:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-09-20 13:31:53,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 254. [2019-09-20 13:31:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2019-09-20 13:31:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2019-09-20 13:31:53,055 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 96 [2019-09-20 13:31:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:53,056 INFO L475 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2019-09-20 13:31:53,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2019-09-20 13:31:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:31:53,058 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:53,058 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, 1, 1, 1, 1] [2019-09-20 13:31:53,058 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1590195415, now seen corresponding path program 1 times [2019-09-20 13:31:53,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:53,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:53,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,062 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:53,152 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 13:31:53,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:53,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:53,153 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:53,154 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:53,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:53,155 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand 6 states. [2019-09-20 13:31:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:53,187 INFO L93 Difference]: Finished difference Result 261 states and 294 transitions. [2019-09-20 13:31:53,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:53,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2019-09-20 13:31:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:53,192 INFO L225 Difference]: With dead ends: 261 [2019-09-20 13:31:53,192 INFO L226 Difference]: Without dead ends: 261 [2019-09-20 13:31:53,193 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 13:31:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-09-20 13:31:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2019-09-20 13:31:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-09-20 13:31:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2019-09-20 13:31:53,220 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 112 [2019-09-20 13:31:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:53,221 INFO L475 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2019-09-20 13:31:53,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2019-09-20 13:31:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:31:53,223 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:53,223 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, 1, 1, 1, 1] [2019-09-20 13:31:53,224 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:53,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:53,224 INFO L82 PathProgramCache]: Analyzing trace with hash -765609835, now seen corresponding path program 1 times [2019-09-20 13:31:53,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:53,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:53,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,229 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:53,314 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 13:31:53,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:53,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:53,314 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:53,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:53,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:53,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:53,316 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 8 states. [2019-09-20 13:31:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:53,345 INFO L93 Difference]: Finished difference Result 266 states and 299 transitions. [2019-09-20 13:31:53,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:53,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2019-09-20 13:31:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:53,348 INFO L225 Difference]: With dead ends: 266 [2019-09-20 13:31:53,348 INFO L226 Difference]: Without dead ends: 266 [2019-09-20 13:31:53,349 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 13:31:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2019-09-20 13:31:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 263. [2019-09-20 13:31:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2019-09-20 13:31:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2019-09-20 13:31:53,379 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 112 [2019-09-20 13:31:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:53,379 INFO L475 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2019-09-20 13:31:53,379 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2019-09-20 13:31:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:31:53,381 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:53,381 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, 1, 1, 1, 1] [2019-09-20 13:31:53,381 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:53,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash 3560180, now seen corresponding path program 1 times [2019-09-20 13:31:53,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:53,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:53,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,385 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:53,463 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 13:31:53,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:53,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:53,463 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:53,464 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:53,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:53,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:53,465 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand 4 states. [2019-09-20 13:31:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:53,717 INFO L93 Difference]: Finished difference Result 519 states and 608 transitions. [2019-09-20 13:31:53,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:53,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-09-20 13:31:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:53,721 INFO L225 Difference]: With dead ends: 519 [2019-09-20 13:31:53,722 INFO L226 Difference]: Without dead ends: 519 [2019-09-20 13:31:53,722 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 13:31:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-09-20 13:31:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 510. [2019-09-20 13:31:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-09-20 13:31:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 591 transitions. [2019-09-20 13:31:53,745 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 591 transitions. Word has length 112 [2019-09-20 13:31:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:53,745 INFO L475 AbstractCegarLoop]: Abstraction has 510 states and 591 transitions. [2019-09-20 13:31:53,746 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 591 transitions. [2019-09-20 13:31:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-20 13:31:53,748 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:53,748 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:53,748 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:53,749 INFO L82 PathProgramCache]: Analyzing trace with hash -427651474, now seen corresponding path program 1 times [2019-09-20 13:31:53,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:53,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:53,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:53,751 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:53,905 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 13:31:53,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:53,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:53,905 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:53,906 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:53,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:53,907 INFO L87 Difference]: Start difference. First operand 510 states and 591 transitions. Second operand 9 states. [2019-09-20 13:31:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:55,295 INFO L93 Difference]: Finished difference Result 926 states and 1076 transitions. [2019-09-20 13:31:55,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:55,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2019-09-20 13:31:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:55,302 INFO L225 Difference]: With dead ends: 926 [2019-09-20 13:31:55,302 INFO L226 Difference]: Without dead ends: 926 [2019-09-20 13:31:55,303 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2019-09-20 13:31:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 850. [2019-09-20 13:31:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2019-09-20 13:31:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 973 transitions. [2019-09-20 13:31:55,336 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 973 transitions. Word has length 116 [2019-09-20 13:31:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:55,337 INFO L475 AbstractCegarLoop]: Abstraction has 850 states and 973 transitions. [2019-09-20 13:31:55,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 973 transitions. [2019-09-20 13:31:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-20 13:31:55,339 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:55,340 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:55,340 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash -701597495, now seen corresponding path program 1 times [2019-09-20 13:31:55,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:55,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:55,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:55,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:55,343 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-20 13:31:55,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:55,509 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:55,510 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 194 with the following transitions: [2019-09-20 13:31:55,512 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [85], [88], [92], [93], [94], [110], [114], [115], [116], [119], [121], [127], [131], [134], [135], [136], [145], [149], [153], [156], [159], [161], [167], [169], [172], [187], [188], [189], [190], [200], [202], [207], [210], [211], [213], [218], [220], [221], [222], [223], [227], [230], [234], [240], [267], [268], [271], [275], [276], [279], [281], [284], [291], [294], [297], [301], [302], [305], [306], [307], [309], [310], [311], [313], [316], [318], [321], [324], [333], [335], [336], [339], [341], [347], [351], [354], [355], [356], [380], [382], [383], [450], [451], [461], [469], [470], [471], [472], [473], [474], [475], [476], [477], [509], [510], [511], [512], [515], [516], [517], [518], [519], [520], [523], [524], [527], [528], [529], [530], [531], [532], [533], [534], [535], [536], [537], [538], [539], [540], [545], [546], [547], [548], [551], [552], [553], [554], [555], [556], [557], [558], [559], [561], [562], [565], [566], [567], [568], [571], [572], [573], [575], [576], [581], [582], [583] [2019-09-20 13:31:55,561 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:55,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:55,654 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:55,655 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 13:31:55,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:55,661 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:55,723 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:55,723 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:55,731 INFO L420 sIntCurrentIteration]: We unified 192 AI predicates to 192 [2019-09-20 13:31:55,731 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:55,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:55,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:55,738 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:55,738 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:55,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:55,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:55,739 INFO L87 Difference]: Start difference. First operand 850 states and 973 transitions. Second operand 2 states. [2019-09-20 13:31:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:55,740 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:55,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:55,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 193 [2019-09-20 13:31:55,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:55,740 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:55,740 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:55,741 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 13:31:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:55,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 193 [2019-09-20 13:31:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:55,745 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:55,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:55,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:55,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:55 BoogieIcfgContainer [2019-09-20 13:31:55,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:55,755 INFO L168 Benchmark]: Toolchain (without parser) took 8184.35 ms. Allocated memory was 138.9 MB in the beginning and 329.8 MB in the end (delta: 190.8 MB). Free memory was 85.9 MB in the beginning and 122.1 MB in the end (delta: -36.2 MB). Peak memory consumption was 154.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:55,756 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:55,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.84 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 85.7 MB in the beginning and 162.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:55,760 INFO L168 Benchmark]: Boogie Preprocessor took 124.92 ms. Allocated memory is still 198.7 MB. Free memory was 162.9 MB in the beginning and 158.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:55,766 INFO L168 Benchmark]: RCFGBuilder took 1306.17 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 158.4 MB in the beginning and 186.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:55,767 INFO L168 Benchmark]: TraceAbstraction took 6008.91 ms. Allocated memory was 221.8 MB in the beginning and 329.8 MB in the end (delta: 108.0 MB). Free memory was 186.5 MB in the beginning and 122.1 MB in the end (delta: 64.4 MB). Peak memory consumption was 172.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:55,779 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.84 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 85.7 MB in the beginning and 162.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.92 ms. Allocated memory is still 198.7 MB. Free memory was 162.9 MB in the beginning and 158.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1306.17 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 158.4 MB in the beginning and 186.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6008.91 ms. Allocated memory was 221.8 MB in the beginning and 329.8 MB in the end (delta: 108.0 MB). Free memory was 186.5 MB in the beginning and 122.1 MB in the end (delta: 64.4 MB). Peak memory consumption was 172.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 925]: 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, 262 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1791 SDtfs, 1484 SDslu, 3561 SDs, 0 SdLazy, 2033 SolverSat, 593 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=9, 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, 0.7864583333333334 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 126 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1006 NumberOfCodeBlocks, 1006 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 996 ConstructedInterpolants, 0 QuantifiedInterpolants, 183282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 72/81 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...