/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:48:10,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:48:10,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:48:10,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:48:10,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:48:10,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:48:10,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:48:10,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:48:10,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:48:10,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:48:10,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:48:10,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:48:10,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:48:10,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:48:10,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:48:10,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:48:10,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:48:10,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:48:10,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:48:10,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:48:10,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:48:10,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:48:10,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:48:10,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:48:10,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:48:10,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:48:10,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:48:10,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:48:10,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:48:10,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:48:10,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:48:10,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:48:10,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:48:10,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:48:10,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:48:10,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:48:10,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:48:10,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:48:10,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:48:10,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:48:10,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:48:10,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:48:10,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:48:10,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:48:10,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:48:10,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:48:10,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:48:10,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:48:10,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:48:10,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:48:10,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:48:10,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:48:10,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:48:10,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:48:10,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:48:10,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:48:10,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:48:10,536 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:48:10,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:48:10,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:48:10,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:48:10,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:48:10,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:48:10,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:48:10,538 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:48:10,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:48:10,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:48:10,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:48:10,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:48:10,983 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:48:10,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-10-23 19:48:11,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f10d238e/f7471b6d6df248abafc6852f5eb5064a/FLAG1f065ebd9 [2020-10-23 19:48:11,640 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:48:11,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-10-23 19:48:11,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f10d238e/f7471b6d6df248abafc6852f5eb5064a/FLAG1f065ebd9 [2020-10-23 19:48:11,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f10d238e/f7471b6d6df248abafc6852f5eb5064a [2020-10-23 19:48:11,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:48:11,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:48:11,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:11,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:48:11,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:48:11,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:11" (1/1) ... [2020-10-23 19:48:11,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76030cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:11, skipping insertion in model container [2020-10-23 19:48:11,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:11" (1/1) ... [2020-10-23 19:48:11,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:48:12,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:48:12,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:12,407 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:48:12,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:12,536 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:48:12,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12 WrapperNode [2020-10-23 19:48:12,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:12,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:48:12,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:48:12,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:48:12,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (1/1) ... [2020-10-23 19:48:12,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (1/1) ... [2020-10-23 19:48:12,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (1/1) ... [2020-10-23 19:48:12,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (1/1) ... [2020-10-23 19:48:12,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (1/1) ... [2020-10-23 19:48:12,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (1/1) ... [2020-10-23 19:48:12,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (1/1) ... [2020-10-23 19:48:12,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:48:12,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:48:12,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:48:12,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:48:12,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (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 [2020-10-23 19:48:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:48:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:48:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:48:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:48:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:48:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:48:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:48:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:48:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:48:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:48:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:48:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:48:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:48:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:48:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:48:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:48:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:48:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:48:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:48:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:48:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:48:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:48:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:48:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:48:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:48:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:48:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:48:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:48:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:48:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:48:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:48:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:48:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:48:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:48:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:48:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:48:12,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:48:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:48:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:48:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:48:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:48:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:48:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:48:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:48:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:48:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:48:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:48:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:48:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:48:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:48:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:48:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:48:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:48:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:48:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:48:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:48:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:48:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:48:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:48:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:48:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:48:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:48:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:48:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:48:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:48:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:48:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:48:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:48:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:48:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:48:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:48:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:48:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:48:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:48:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:48:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:48:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:48:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:48:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:48:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:48:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:48:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:48:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:48:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:48:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:48:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:48:13,928 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:48:13,928 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:48:13,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:13 BoogieIcfgContainer [2020-10-23 19:48:13,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:48:13,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:48:13,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:48:13,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:48:13,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:48:11" (1/3) ... [2020-10-23 19:48:13,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b92d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:13, skipping insertion in model container [2020-10-23 19:48:13,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:12" (2/3) ... [2020-10-23 19:48:13,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b92d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:13, skipping insertion in model container [2020-10-23 19:48:13,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:13" (3/3) ... [2020-10-23 19:48:13,940 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-10-23 19:48:13,952 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:48:13,958 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:48:13,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:48:13,994 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:48:13,994 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:48:13,994 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:48:13,994 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:48:13,995 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:48:13,995 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:48:13,995 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:48:13,995 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:48:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states. [2020-10-23 19:48:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:48:14,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:14,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:14,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:14,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2079418441, now seen corresponding path program 1 times [2020-10-23 19:48:14,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:14,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615340556] [2020-10-23 19:48:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:14,136 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,806 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:14,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615340556] [2020-10-23 19:48:14,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:14,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:48:14,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244305214] [2020-10-23 19:48:14,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:48:14,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:14,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:48:14,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:48:14,984 INFO L87 Difference]: Start difference. First operand 327 states. Second operand 3 states. [2020-10-23 19:48:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:16,638 INFO L93 Difference]: Finished difference Result 499 states and 591 transitions. [2020-10-23 19:48:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:48:16,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:48:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:16,657 INFO L225 Difference]: With dead ends: 499 [2020-10-23 19:48:16,657 INFO L226 Difference]: Without dead ends: 308 [2020-10-23 19:48:16,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:48:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-23 19:48:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 267. [2020-10-23 19:48:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-23 19:48:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2020-10-23 19:48:16,838 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 148 [2020-10-23 19:48:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:16,839 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2020-10-23 19:48:16,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:48:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2020-10-23 19:48:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:48:16,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:16,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:16,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:48:16,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:16,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1298070446, now seen corresponding path program 1 times [2020-10-23 19:48:16,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:16,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095343092] [2020-10-23 19:48:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:16,856 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,379 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:48:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:48:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:17,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095343092] [2020-10-23 19:48:17,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:17,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:48:17,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331443265] [2020-10-23 19:48:17,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:48:17,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:17,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:48:17,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:48:17,473 INFO L87 Difference]: Start difference. First operand 267 states and 289 transitions. Second operand 4 states. [2020-10-23 19:48:18,252 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:19,512 INFO L93 Difference]: Finished difference Result 413 states and 462 transitions. [2020-10-23 19:48:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:48:19,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:48:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:19,522 INFO L225 Difference]: With dead ends: 413 [2020-10-23 19:48:19,522 INFO L226 Difference]: Without dead ends: 291 [2020-10-23 19:48:19,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:48:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-23 19:48:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 257. [2020-10-23 19:48:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-23 19:48:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 276 transitions. [2020-10-23 19:48:19,659 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 276 transitions. Word has length 149 [2020-10-23 19:48:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:19,660 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 276 transitions. [2020-10-23 19:48:19,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:48:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 276 transitions. [2020-10-23 19:48:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 19:48:19,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:19,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:19,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:48:19,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:19,664 INFO L82 PathProgramCache]: Analyzing trace with hash 760797565, now seen corresponding path program 1 times [2020-10-23 19:48:19,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:19,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192263415] [2020-10-23 19:48:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:19,668 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,146 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:20,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:48:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:20,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192263415] [2020-10-23 19:48:20,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:20,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:20,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940324205] [2020-10-23 19:48:20,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:20,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:20,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:20,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:20,376 INFO L87 Difference]: Start difference. First operand 257 states and 276 transitions. Second operand 9 states. [2020-10-23 19:48:20,987 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:21,462 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:21,845 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:22,227 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:22,591 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:22,975 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:24,713 INFO L93 Difference]: Finished difference Result 433 states and 487 transitions. [2020-10-23 19:48:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:48:24,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 19:48:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:24,719 INFO L225 Difference]: With dead ends: 433 [2020-10-23 19:48:24,720 INFO L226 Difference]: Without dead ends: 291 [2020-10-23 19:48:24,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:48:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-23 19:48:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 257. [2020-10-23 19:48:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-23 19:48:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 275 transitions. [2020-10-23 19:48:24,821 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 275 transitions. Word has length 158 [2020-10-23 19:48:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:24,822 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 275 transitions. [2020-10-23 19:48:24,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:24,822 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 275 transitions. [2020-10-23 19:48:24,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-23 19:48:24,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:24,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:24,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:48:24,826 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:24,827 INFO L82 PathProgramCache]: Analyzing trace with hash 579176495, now seen corresponding path program 1 times [2020-10-23 19:48:24,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:24,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517825411] [2020-10-23 19:48:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:24,831 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,222 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:25,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 19:48:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 19:48:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:25,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517825411] [2020-10-23 19:48:25,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:25,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:48:25,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91570254] [2020-10-23 19:48:25,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:48:25,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:48:25,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:48:25,437 INFO L87 Difference]: Start difference. First operand 257 states and 275 transitions. Second operand 6 states. [2020-10-23 19:48:26,072 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:27,798 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:28,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:28,709 INFO L93 Difference]: Finished difference Result 566 states and 644 transitions. [2020-10-23 19:48:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:48:28,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-23 19:48:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:28,715 INFO L225 Difference]: With dead ends: 566 [2020-10-23 19:48:28,716 INFO L226 Difference]: Without dead ends: 424 [2020-10-23 19:48:28,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:48:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-23 19:48:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 363. [2020-10-23 19:48:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-23 19:48:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 390 transitions. [2020-10-23 19:48:28,868 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 390 transitions. Word has length 171 [2020-10-23 19:48:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:28,869 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 390 transitions. [2020-10-23 19:48:28,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:48:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 390 transitions. [2020-10-23 19:48:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-23 19:48:28,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:28,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:28,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:48:28,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:28,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:28,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1676743533, now seen corresponding path program 1 times [2020-10-23 19:48:28,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:28,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775679952] [2020-10-23 19:48:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:28,877 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,270 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 19:48:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:48:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:29,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775679952] [2020-10-23 19:48:29,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:29,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:29,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477635347] [2020-10-23 19:48:29,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:29,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:29,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:29,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:29,483 INFO L87 Difference]: Start difference. First operand 363 states and 390 transitions. Second operand 9 states. [2020-10-23 19:48:30,079 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:31,866 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:32,232 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:32,611 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:32,989 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:33,347 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:33,699 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:34,056 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:34,542 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:36,031 INFO L93 Difference]: Finished difference Result 912 states and 1048 transitions. [2020-10-23 19:48:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:48:36,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-23 19:48:36,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:36,037 INFO L225 Difference]: With dead ends: 912 [2020-10-23 19:48:36,037 INFO L226 Difference]: Without dead ends: 664 [2020-10-23 19:48:36,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:48:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-10-23 19:48:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 573. [2020-10-23 19:48:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-10-23 19:48:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 622 transitions. [2020-10-23 19:48:36,304 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 622 transitions. Word has length 195 [2020-10-23 19:48:36,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:36,305 INFO L481 AbstractCegarLoop]: Abstraction has 573 states and 622 transitions. [2020-10-23 19:48:36,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 622 transitions. [2020-10-23 19:48:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 19:48:36,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:36,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:36,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:48:36,309 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1466855724, now seen corresponding path program 1 times [2020-10-23 19:48:36,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:36,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394497039] [2020-10-23 19:48:36,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:36,312 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,726 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:48:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:48:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:36,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394497039] [2020-10-23 19:48:36,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:36,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:36,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68882936] [2020-10-23 19:48:36,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:36,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:36,924 INFO L87 Difference]: Start difference. First operand 573 states and 622 transitions. Second operand 10 states. [2020-10-23 19:48:37,596 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:39,348 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:39,706 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:40,089 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:40,445 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:40,838 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:41,251 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:41,625 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:42,025 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:43,324 INFO L93 Difference]: Finished difference Result 731 states and 845 transitions. [2020-10-23 19:48:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:48:43,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-10-23 19:48:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:43,330 INFO L225 Difference]: With dead ends: 731 [2020-10-23 19:48:43,331 INFO L226 Difference]: Without dead ends: 727 [2020-10-23 19:48:43,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:48:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-10-23 19:48:43,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 573. [2020-10-23 19:48:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-10-23 19:48:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 621 transitions. [2020-10-23 19:48:43,589 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 621 transitions. Word has length 200 [2020-10-23 19:48:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:43,590 INFO L481 AbstractCegarLoop]: Abstraction has 573 states and 621 transitions. [2020-10-23 19:48:43,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:48:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 621 transitions. [2020-10-23 19:48:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 19:48:43,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:43,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:43,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:48:43,593 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash -593308524, now seen corresponding path program 1 times [2020-10-23 19:48:43,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:43,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121157335] [2020-10-23 19:48:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:43,597 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:43,955 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:43,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:43,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:43,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:43,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:48:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:48:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:44,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121157335] [2020-10-23 19:48:44,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:44,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:44,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918956142] [2020-10-23 19:48:44,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:44,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:44,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:44,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:44,166 INFO L87 Difference]: Start difference. First operand 573 states and 621 transitions. Second operand 10 states. [2020-10-23 19:48:45,548 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:45,921 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:46,321 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:48:46,697 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:47,077 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:47,428 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:48,955 INFO L93 Difference]: Finished difference Result 1195 states and 1371 transitions. [2020-10-23 19:48:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:48:48,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-10-23 19:48:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:48,962 INFO L225 Difference]: With dead ends: 1195 [2020-10-23 19:48:48,963 INFO L226 Difference]: Without dead ends: 737 [2020-10-23 19:48:48,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:48:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-23 19:48:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 589. [2020-10-23 19:48:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-23 19:48:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 637 transitions. [2020-10-23 19:48:49,280 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 637 transitions. Word has length 201 [2020-10-23 19:48:49,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:49,281 INFO L481 AbstractCegarLoop]: Abstraction has 589 states and 637 transitions. [2020-10-23 19:48:49,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:48:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 637 transitions. [2020-10-23 19:48:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 19:48:49,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:49,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:49,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:48:49,285 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:49,286 INFO L82 PathProgramCache]: Analyzing trace with hash -718512908, now seen corresponding path program 1 times [2020-10-23 19:48:49,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:49,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222579030] [2020-10-23 19:48:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:49,291 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,675 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:49,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:48:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:48:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:49,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222579030] [2020-10-23 19:48:49,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:49,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:48:49,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297406679] [2020-10-23 19:48:49,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:48:49,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:49,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:48:49,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:48:49,897 INFO L87 Difference]: Start difference. First operand 589 states and 637 transitions. Second operand 13 states. [2020-10-23 19:48:50,638 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:51,014 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:51,384 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:51,759 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:52,107 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:53,058 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:53,419 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:53,815 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:54,199 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:54,552 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:56,322 INFO L93 Difference]: Finished difference Result 1233 states and 1425 transitions. [2020-10-23 19:48:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:48:56,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 201 [2020-10-23 19:48:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:56,333 INFO L225 Difference]: With dead ends: 1233 [2020-10-23 19:48:56,333 INFO L226 Difference]: Without dead ends: 759 [2020-10-23 19:48:56,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:48:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-23 19:48:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 601. [2020-10-23 19:48:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-10-23 19:48:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 649 transitions. [2020-10-23 19:48:56,640 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 649 transitions. Word has length 201 [2020-10-23 19:48:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:56,640 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 649 transitions. [2020-10-23 19:48:56,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:48:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 649 transitions. [2020-10-23 19:48:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 19:48:56,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:56,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:56,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:48:56,647 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:56,647 INFO L82 PathProgramCache]: Analyzing trace with hash -28018767, now seen corresponding path program 1 times [2020-10-23 19:48:56,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:56,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908488806] [2020-10-23 19:48:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:56,651 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,026 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:57,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:48:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:48:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:57,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908488806] [2020-10-23 19:48:57,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:57,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:48:57,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803086735] [2020-10-23 19:48:57,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:48:57,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:57,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:48:57,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:48:57,220 INFO L87 Difference]: Start difference. First operand 601 states and 649 transitions. Second operand 7 states. [2020-10-23 19:48:57,812 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:58,531 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:01,515 INFO L93 Difference]: Finished difference Result 1679 states and 1990 transitions. [2020-10-23 19:49:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:49:01,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-23 19:49:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:01,524 INFO L225 Difference]: With dead ends: 1679 [2020-10-23 19:49:01,524 INFO L226 Difference]: Without dead ends: 1193 [2020-10-23 19:49:01,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:49:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-10-23 19:49:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1019. [2020-10-23 19:49:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-10-23 19:49:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1141 transitions. [2020-10-23 19:49:02,017 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1141 transitions. Word has length 201 [2020-10-23 19:49:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:02,017 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1141 transitions. [2020-10-23 19:49:02,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:49:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1141 transitions. [2020-10-23 19:49:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:49:02,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:02,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:02,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:49:02,022 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:02,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1184868317, now seen corresponding path program 1 times [2020-10-23 19:49:02,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:02,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674708776] [2020-10-23 19:49:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:02,026 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:49:02,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:49:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:49:02,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:49:02,477 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:49:02,478 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:49:02,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:49:02,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:49:02 BoogieIcfgContainer [2020-10-23 19:49:02,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:49:02,506 INFO L168 Benchmark]: Toolchain (without parser) took 50545.57 ms. Allocated memory was 165.7 MB in the beginning and 602.9 MB in the end (delta: 437.3 MB). Free memory was 141.3 MB in the beginning and 561.5 MB in the end (delta: -420.2 MB). Peak memory consumption was 365.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:02,507 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 165.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:49:02,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.56 ms. Allocated memory is still 165.7 MB. Free memory was 140.7 MB in the beginning and 119.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:02,508 INFO L168 Benchmark]: Boogie Preprocessor took 123.47 ms. Allocated memory is still 165.7 MB. Free memory was 119.4 MB in the beginning and 115.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:02,509 INFO L168 Benchmark]: RCFGBuilder took 1269.32 ms. Allocated memory was 165.7 MB in the beginning and 200.3 MB in the end (delta: 34.6 MB). Free memory was 115.3 MB in the beginning and 135.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:02,510 INFO L168 Benchmark]: TraceAbstraction took 48571.34 ms. Allocated memory was 200.3 MB in the beginning and 602.9 MB in the end (delta: 402.7 MB). Free memory was 134.7 MB in the beginning and 561.5 MB in the end (delta: -426.8 MB). Peak memory consumption was 323.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:02,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 165.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 567.56 ms. Allocated memory is still 165.7 MB. Free memory was 140.7 MB in the beginning and 119.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 123.47 ms. Allocated memory is still 165.7 MB. Free memory was 119.4 MB in the beginning and 115.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1269.32 ms. Allocated memory was 165.7 MB in the beginning and 200.3 MB in the end (delta: 34.6 MB). Free memory was 115.3 MB in the beginning and 135.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48571.34 ms. Allocated memory was 200.3 MB in the beginning and 602.9 MB in the end (delta: 402.7 MB). Free memory was 134.7 MB in the beginning and 561.5 MB in the end (delta: -426.8 MB). Peak memory consumption was 323.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L71] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int pumpRunning = 0; [L548] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; [L152] int retValue_acc ; [L153] int tmp ; [L157] FCALL select_helpers() [L158] FCALL select_features() [L159] CALL, EXPR valid_product() [L835] int retValue_acc ; [L838] retValue_acc = 1 [L839] return (retValue_acc); [L159] RET, EXPR valid_product() [L159] tmp = valid_product() [L161] COND TRUE \read(tmp) [L163] FCALL setup() [L164] CALL runTest() [L143] CALL test() [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 [L754] COND TRUE 1 [L756] COND TRUE splverifierCounter < 4 [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) [L766] CALL waterRise() [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 [L766] RET waterRise() [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND TRUE \read(tmp___0) [L776] CALL changeMethaneLevel() [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 [L776] RET changeMethaneLevel() [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) [L797] CALL timeShift() [L554] COND FALSE !(\read(pumpRunning)) [L561] COND TRUE \read(systemActive) [L563] CALL processEnvironment() [L609] int tmp ; [L612] COND FALSE !(\read(pumpRunning)) [L627] CALL processEnvironment__wrappee__highWaterSensor() [L583] int tmp ; [L586] COND TRUE ! pumpRunning [L588] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L925] int retValue_acc ; [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L588] RET, EXPR isHighWaterLevel() [L588] tmp = isHighWaterLevel() [L590] COND TRUE \read(tmp) [L592] CALL activatePump() [L637] pumpRunning = 1 [L592] RET activatePump() [L627] RET processEnvironment__wrappee__highWaterSensor() [L563] RET processEnvironment() [L569] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L952] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product49.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 650 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 39.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2276 SDtfs, 3652 SDslu, 4049 SDs, 0 SdLazy, 7936 SolverSat, 1013 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1019occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 895 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...