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_spec3_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:58:04,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:58:04,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:58:04,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:58:04,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:58:04,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:58:04,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:58:04,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:58:04,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:58:04,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:58:04,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:58:04,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:58:04,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:58:04,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:58:04,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:58:04,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:58:04,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:58:04,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:58:04,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:58:04,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:58:04,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:58:04,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:58:04,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:58:04,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:58:04,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:58:04,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:58:04,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:58:04,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:58:04,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:58:04,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:58:04,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:58:04,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:58:04,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:58:04,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:58:04,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:58:04,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:58:04,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:58:04,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:58:04,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:58:04,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:58:04,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:58:04,682 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 [2019-10-03 02:58:04,701 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:58:04,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:58:04,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:58:04,702 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:58:04,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:58:04,704 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:58:04,704 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:58:04,704 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:58:04,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:58:04,705 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:58:04,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:58:04,707 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:58:04,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:58:04,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:58:04,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:58:04,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:58:04,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:58:04,709 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:58:04,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:58:04,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:58:04,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:58:04,710 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:58:04,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:58:04,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:58:04,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:58:04,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:58:04,712 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:58:04,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:58:04,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:58:04,712 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:58:04,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:58:04,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:58:04,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:58:04,791 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:58:04,792 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:58:04,793 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2019-10-03 02:58:04,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f41920755/5f4c3212387e485c88bd4472fe79f167/FLAGc23ad70ae [2019-10-03 02:58:05,382 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:58:05,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2019-10-03 02:58:05,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f41920755/5f4c3212387e485c88bd4472fe79f167/FLAGc23ad70ae [2019-10-03 02:58:05,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f41920755/5f4c3212387e485c88bd4472fe79f167 [2019-10-03 02:58:05,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:58:05,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:58:05,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:58:05,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:58:05,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:58:05,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:58:05" (1/1) ... [2019-10-03 02:58:05,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297c3183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:05, skipping insertion in model container [2019-10-03 02:58:05,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:58:05" (1/1) ... [2019-10-03 02:58:05,726 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:58:05,784 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:58:06,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:58:06,251 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:58:06,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:58:06,373 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:58:06,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06 WrapperNode [2019-10-03 02:58:06,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:58:06,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:58:06,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:58:06,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:58:06,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... [2019-10-03 02:58:06,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... [2019-10-03 02:58:06,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... [2019-10-03 02:58:06,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... [2019-10-03 02:58:06,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... [2019-10-03 02:58:06,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... [2019-10-03 02:58:06,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... [2019-10-03 02:58:06,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:58:06,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:58:06,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:58:06,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:58:06,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:58:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:58:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:58:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-03 02:58:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-03 02:58:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-03 02:58:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-03 02:58:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-03 02:58:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:58:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-03 02:58:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-03 02:58:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-03 02:58:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-03 02:58:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-03 02:58:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-03 02:58:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-03 02:58:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-03 02:58:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-03 02:58:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-03 02:58:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-03 02:58:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-03 02:58:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-03 02:58:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-03 02:58:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-03 02:58:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-03 02:58:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-03 02:58:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-03 02:58:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-03 02:58:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-03 02:58:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-03 02:58:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-03 02:58:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-03 02:58:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:58:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-03 02:58:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-03 02:58:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-03 02:58:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-03 02:58:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-03 02:58:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-03 02:58:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-03 02:58:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-03 02:58:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-03 02:58:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-03 02:58:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:58:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:58:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-03 02:58:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-03 02:58:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-03 02:58:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-03 02:58:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-03 02:58:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-03 02:58:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-03 02:58:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-03 02:58:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-03 02:58:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-03 02:58:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-03 02:58:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-03 02:58:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-03 02:58:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:58:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-03 02:58:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-03 02:58:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:58:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:58:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-03 02:58:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:58:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:58:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:58:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:58:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-03 02:58:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:58:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-03 02:58:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-03 02:58:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:58:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-03 02:58:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-03 02:58:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:58:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-03 02:58:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-03 02:58:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-03 02:58:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-03 02:58:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-03 02:58:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-03 02:58:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-03 02:58:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-03 02:58:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-03 02:58:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-03 02:58:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-03 02:58:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-03 02:58:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-03 02:58:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-03 02:58:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-03 02:58:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-03 02:58:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-03 02:58:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-03 02:58:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-03 02:58:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-03 02:58:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:58:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:58:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:58:07,723 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:58:07,723 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-03 02:58:07,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:58:07 BoogieIcfgContainer [2019-10-03 02:58:07,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:58:07,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:58:07,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:58:07,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:58:07,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:58:05" (1/3) ... [2019-10-03 02:58:07,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480b8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:58:07, skipping insertion in model container [2019-10-03 02:58:07,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:06" (2/3) ... [2019-10-03 02:58:07,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480b8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:58:07, skipping insertion in model container [2019-10-03 02:58:07,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:58:07" (3/3) ... [2019-10-03 02:58:07,733 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product58.cil.c [2019-10-03 02:58:07,744 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:58:07,753 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:58:07,774 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:58:07,806 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:58:07,807 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:58:07,807 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:58:07,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:58:07,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:58:07,807 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:58:07,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:58:07,808 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:58:07,830 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-10-03 02:58:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-03 02:58:07,845 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:07,846 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:07,849 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash -743083680, now seen corresponding path program 1 times [2019-10-03 02:58:07,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:07,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:07,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:07,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:07,921 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:08,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:08,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:58:08,276 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:08,282 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:58:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:58:08,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:58:08,302 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 2 states. [2019-10-03 02:58:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:08,334 INFO L93 Difference]: Finished difference Result 161 states and 187 transitions. [2019-10-03 02:58:08,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:58:08,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-03 02:58:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:08,349 INFO L225 Difference]: With dead ends: 161 [2019-10-03 02:58:08,349 INFO L226 Difference]: Without dead ends: 150 [2019-10-03 02:58:08,351 INFO L640 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 [2019-10-03 02:58:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-10-03 02:58:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-10-03 02:58:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-03 02:58:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2019-10-03 02:58:08,404 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 52 [2019-10-03 02:58:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:08,405 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2019-10-03 02:58:08,405 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:58:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2019-10-03 02:58:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-03 02:58:08,409 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:08,409 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:08,409 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:08,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1294042386, now seen corresponding path program 1 times [2019-10-03 02:58:08,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:08,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:08,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:08,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:08,413 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:08,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:08,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:58:08,547 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:08,551 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:58:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:58:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:58:08,552 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand 3 states. [2019-10-03 02:58:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:08,579 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2019-10-03 02:58:08,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:58:08,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-03 02:58:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:08,582 INFO L225 Difference]: With dead ends: 141 [2019-10-03 02:58:08,583 INFO L226 Difference]: Without dead ends: 141 [2019-10-03 02:58:08,583 INFO L640 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 [2019-10-03 02:58:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-10-03 02:58:08,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-10-03 02:58:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-03 02:58:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2019-10-03 02:58:08,600 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 53 [2019-10-03 02:58:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:08,601 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2019-10-03 02:58:08,601 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:58:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2019-10-03 02:58:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-03 02:58:08,611 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:08,611 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:08,611 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:08,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:08,612 INFO L82 PathProgramCache]: Analyzing trace with hash 593618756, now seen corresponding path program 1 times [2019-10-03 02:58:08,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:08,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:08,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:08,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:08,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:08,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:08,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:58:08,794 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:08,794 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:58:08,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:58:08,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:58:08,795 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand 7 states. [2019-10-03 02:58:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:09,208 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2019-10-03 02:58:09,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 02:58:09,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-03 02:58:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:09,215 INFO L225 Difference]: With dead ends: 141 [2019-10-03 02:58:09,215 INFO L226 Difference]: Without dead ends: 141 [2019-10-03 02:58:09,216 INFO L640 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 [2019-10-03 02:58:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-10-03 02:58:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-10-03 02:58:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-03 02:58:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2019-10-03 02:58:09,238 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 58 [2019-10-03 02:58:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:09,239 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2019-10-03 02:58:09,239 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:58:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2019-10-03 02:58:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-03 02:58:09,247 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:09,248 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:09,248 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash -16856487, now seen corresponding path program 1 times [2019-10-03 02:58:09,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:09,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:09,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:09,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:09,256 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:09,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:09,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:58:09,429 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:09,430 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:58:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:58:09,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:58:09,431 INFO L87 Difference]: Start difference. First operand 141 states and 162 transitions. Second operand 5 states. [2019-10-03 02:58:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:10,096 INFO L93 Difference]: Finished difference Result 254 states and 293 transitions. [2019-10-03 02:58:10,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:58:10,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-10-03 02:58:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:10,102 INFO L225 Difference]: With dead ends: 254 [2019-10-03 02:58:10,103 INFO L226 Difference]: Without dead ends: 254 [2019-10-03 02:58:10,103 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:58:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-10-03 02:58:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2019-10-03 02:58:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-10-03 02:58:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2019-10-03 02:58:10,139 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 71 [2019-10-03 02:58:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:10,139 INFO L475 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2019-10-03 02:58:10,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:58:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2019-10-03 02:58:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-03 02:58:10,141 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:10,141 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:10,142 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:10,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:10,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1762317239, now seen corresponding path program 1 times [2019-10-03 02:58:10,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:10,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:10,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:10,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:10,145 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:10,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:10,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:58:10,258 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:10,259 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:58:10,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:58:10,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:58:10,260 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 6 states. [2019-10-03 02:58:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:10,477 INFO L93 Difference]: Finished difference Result 369 states and 425 transitions. [2019-10-03 02:58:10,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:58:10,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2019-10-03 02:58:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:10,485 INFO L225 Difference]: With dead ends: 369 [2019-10-03 02:58:10,485 INFO L226 Difference]: Without dead ends: 369 [2019-10-03 02:58:10,485 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:58:10,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2019-10-03 02:58:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2019-10-03 02:58:10,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2019-10-03 02:58:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 421 transitions. [2019-10-03 02:58:10,533 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 421 transitions. Word has length 85 [2019-10-03 02:58:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:10,534 INFO L475 AbstractCegarLoop]: Abstraction has 365 states and 421 transitions. [2019-10-03 02:58:10,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:58:10,534 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 421 transitions. [2019-10-03 02:58:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-03 02:58:10,539 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:10,540 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:10,540 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:10,541 INFO L82 PathProgramCache]: Analyzing trace with hash 25171709, now seen corresponding path program 1 times [2019-10-03 02:58:10,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:10,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:10,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:10,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:10,546 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:10,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:10,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:58:10,736 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:10,736 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:58:10,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:58:10,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:58:10,737 INFO L87 Difference]: Start difference. First operand 365 states and 421 transitions. Second operand 6 states. [2019-10-03 02:58:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:11,022 INFO L93 Difference]: Finished difference Result 571 states and 674 transitions. [2019-10-03 02:58:11,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-03 02:58:11,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-10-03 02:58:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:11,028 INFO L225 Difference]: With dead ends: 571 [2019-10-03 02:58:11,028 INFO L226 Difference]: Without dead ends: 571 [2019-10-03 02:58:11,029 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:58:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-10-03 02:58:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 553. [2019-10-03 02:58:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2019-10-03 02:58:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 651 transitions. [2019-10-03 02:58:11,066 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 651 transitions. Word has length 89 [2019-10-03 02:58:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:11,067 INFO L475 AbstractCegarLoop]: Abstraction has 553 states and 651 transitions. [2019-10-03 02:58:11,067 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:58:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 651 transitions. [2019-10-03 02:58:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-03 02:58:11,069 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:11,069 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:11,070 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:11,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:11,070 INFO L82 PathProgramCache]: Analyzing trace with hash -897511874, now seen corresponding path program 1 times [2019-10-03 02:58:11,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:11,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:11,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:11,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:11,073 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:11,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:11,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:58:11,136 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:11,136 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:58:11,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:58:11,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:58:11,137 INFO L87 Difference]: Start difference. First operand 553 states and 651 transitions. Second operand 5 states. [2019-10-03 02:58:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:11,159 INFO L93 Difference]: Finished difference Result 563 states and 661 transitions. [2019-10-03 02:58:11,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:58:11,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2019-10-03 02:58:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:11,163 INFO L225 Difference]: With dead ends: 563 [2019-10-03 02:58:11,163 INFO L226 Difference]: Without dead ends: 563 [2019-10-03 02:58:11,164 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:58:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2019-10-03 02:58:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 557. [2019-10-03 02:58:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2019-10-03 02:58:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 654 transitions. [2019-10-03 02:58:11,186 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 654 transitions. Word has length 89 [2019-10-03 02:58:11,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:11,187 INFO L475 AbstractCegarLoop]: Abstraction has 557 states and 654 transitions. [2019-10-03 02:58:11,187 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:58:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 654 transitions. [2019-10-03 02:58:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-03 02:58:11,189 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:11,189 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:11,189 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1741517376, now seen corresponding path program 1 times [2019-10-03 02:58:11,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:11,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:11,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:11,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:11,192 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:11,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:11,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-03 02:58:11,280 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:11,281 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-03 02:58:11,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-03 02:58:11,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:58:11,282 INFO L87 Difference]: Start difference. First operand 557 states and 654 transitions. Second operand 9 states. [2019-10-03 02:58:11,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:11,342 INFO L93 Difference]: Finished difference Result 574 states and 677 transitions. [2019-10-03 02:58:11,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-03 02:58:11,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2019-10-03 02:58:11,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:11,347 INFO L225 Difference]: With dead ends: 574 [2019-10-03 02:58:11,347 INFO L226 Difference]: Without dead ends: 574 [2019-10-03 02:58:11,347 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-03 02:58:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-10-03 02:58:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 564. [2019-10-03 02:58:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-10-03 02:58:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 661 transitions. [2019-10-03 02:58:11,367 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 661 transitions. Word has length 89 [2019-10-03 02:58:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:11,368 INFO L475 AbstractCegarLoop]: Abstraction has 564 states and 661 transitions. [2019-10-03 02:58:11,368 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-03 02:58:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 661 transitions. [2019-10-03 02:58:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-03 02:58:11,370 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:11,370 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:11,371 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash -124080585, now seen corresponding path program 1 times [2019-10-03 02:58:11,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:11,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:11,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:11,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:11,374 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:58:11,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:58:11,470 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:58:11,471 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 102 with the following transitions: [2019-10-03 02:58:11,473 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [161], [167], [169], [175], [178], [201], [203], [206], [211], [212], [213], [214], [216], [221], [223], [224], [230], [234], [267], [268], [278], [281], [283], [286], [296], [299], [303], [304], [307], [308], [309], [332], [334], [335], [402], [403], [413], [415], [420], [422], [425], [427], [432], [439], [447], [448], [449], [450], [451], [452], [453], [454], [455], [495], [496], [497], [498], [503], [507], [508], [511], [512], [515], [516], [517], [523], [524], [525], [526], [533], [535], [536], [541], [542], [543], [544], [545], [546], [547], [549], [550], [551] [2019-10-03 02:58:11,524 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:58:11,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:58:11,603 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:58:11,605 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 126 variables. [2019-10-03 02:58:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:11,610 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:58:11,656 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:58:11,657 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:58:11,660 INFO L420 sIntCurrentIteration]: We unified 100 AI predicates to 100 [2019-10-03 02:58:11,660 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:58:11,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:58:11,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-03 02:58:11,662 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:11,662 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:58:11,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:58:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:58:11,663 INFO L87 Difference]: Start difference. First operand 564 states and 661 transitions. Second operand 2 states. [2019-10-03 02:58:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:11,663 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:58:11,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:58:11,664 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 101 [2019-10-03 02:58:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:11,664 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:58:11,664 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:58:11,665 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:58:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:58:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:58:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:58:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:58:11,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2019-10-03 02:58:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:11,666 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:58:11,666 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:58:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:58:11,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:58:11,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:58:11 BoogieIcfgContainer [2019-10-03 02:58:11,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:58:11,675 INFO L168 Benchmark]: Toolchain (without parser) took 5970.14 ms. Allocated memory was 136.3 MB in the beginning and 274.7 MB in the end (delta: 138.4 MB). Free memory was 82.6 MB in the beginning and 88.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:11,676 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:58:11,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.83 ms. Allocated memory was 136.3 MB in the beginning and 197.7 MB in the end (delta: 61.3 MB). Free memory was 82.3 MB in the beginning and 161.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:11,678 INFO L168 Benchmark]: Boogie Preprocessor took 85.02 ms. Allocated memory is still 197.7 MB. Free memory was 161.8 MB in the beginning and 157.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:11,679 INFO L168 Benchmark]: RCFGBuilder took 1264.69 ms. Allocated memory was 197.7 MB in the beginning and 215.0 MB in the end (delta: 17.3 MB). Free memory was 157.9 MB in the beginning and 185.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 96.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:11,680 INFO L168 Benchmark]: TraceAbstraction took 3946.27 ms. Allocated memory was 215.0 MB in the beginning and 274.7 MB in the end (delta: 59.8 MB). Free memory was 185.6 MB in the beginning and 88.6 MB in the end (delta: 97.1 MB). Peak memory consumption was 156.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:11,684 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 136.3 MB. Free memory was 102.3 MB in the beginning and 102.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.83 ms. Allocated memory was 136.3 MB in the beginning and 197.7 MB in the end (delta: 61.3 MB). Free memory was 82.3 MB in the beginning and 161.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.02 ms. Allocated memory is still 197.7 MB. Free memory was 161.8 MB in the beginning and 157.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1264.69 ms. Allocated memory was 197.7 MB in the beginning and 215.0 MB in the end (delta: 17.3 MB). Free memory was 157.9 MB in the beginning and 185.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 96.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3946.27 ms. Allocated memory was 215.0 MB in the beginning and 274.7 MB in the end (delta: 59.8 MB). Free memory was 185.6 MB in the beginning and 88.6 MB in the end (delta: 97.1 MB). Peak memory consumption was 156.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 549]: 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 42 procedures, 249 locations, 1 error locations. SAFE Result, 3.8s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1406 SDtfs, 697 SDslu, 3516 SDs, 0 SdLazy, 678 SolverSat, 215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=564occurred 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, 1.13 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 57 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 687 NumberOfCodeBlocks, 687 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 678 ConstructedInterpolants, 0 QuantifiedInterpolants, 87130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...