/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_spec4_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:14:57,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:14:57,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:14:57,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:14:57,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:14:57,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:14:57,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:14:57,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:14:57,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:14:57,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:14:57,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:14:57,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:14:57,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:14:57,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:14:57,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:14:57,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:14:57,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:14:57,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:14:57,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:14:57,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:14:57,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:14:57,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:14:57,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:14:57,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:14:57,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:14:57,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:14:57,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:14:57,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:14:57,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:14:57,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:14:57,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:14:57,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:14:57,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:14:57,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:14:57,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:14:57,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:14:57,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:14:57,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:14:57,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:14:57,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:14:57,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:14:57,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:14:57,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:14:57,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:14:57,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:14:57,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:14:57,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:14:57,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:14:57,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:14:57,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:14:57,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:14:57,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:14:57,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:14:57,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:14:57,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:14:57,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:14:57,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:14:57,663 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:14:57,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:14:57,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:14:57,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:14:57,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:14:57,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:14:57,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:14:57,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:14:58,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:14:58,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:14:58,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:14:58,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:14:58,351 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:14:58,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product15.cil.c [2021-02-21 19:14:58,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7025a375f/2b3844ff02304995b4fdc6cf3452d428/FLAG6b632c68a [2021-02-21 19:14:59,481 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:14:59,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product15.cil.c [2021-02-21 19:14:59,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7025a375f/2b3844ff02304995b4fdc6cf3452d428/FLAG6b632c68a [2021-02-21 19:14:59,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7025a375f/2b3844ff02304995b4fdc6cf3452d428 [2021-02-21 19:14:59,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:14:59,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:14:59,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:14:59,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:14:59,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:14:59,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:14:59" (1/1) ... [2021-02-21 19:14:59,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e1c75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:14:59, skipping insertion in model container [2021-02-21 19:14:59,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:14:59" (1/1) ... [2021-02-21 19:14:59,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:14:59,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:14:59,862 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product15.cil.c[1817,1830] [2021-02-21 19:15:00,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:00,038 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:15:00,065 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product15.cil.c[1817,1830] [2021-02-21 19:15:00,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:00,307 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:15:00,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00 WrapperNode [2021-02-21 19:15:00,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:00,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:15:00,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:15:00,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:15:00,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (1/1) ... [2021-02-21 19:15:00,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (1/1) ... [2021-02-21 19:15:00,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (1/1) ... [2021-02-21 19:15:00,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (1/1) ... [2021-02-21 19:15:00,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (1/1) ... [2021-02-21 19:15:00,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (1/1) ... [2021-02-21 19:15:00,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (1/1) ... [2021-02-21 19:15:00,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:15:00,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:15:00,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:15:00,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:15:00,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (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 [2021-02-21 19:15:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:15:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:15:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:00,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:15:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:15:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:15:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:15:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:15:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:15:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:15:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:15:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:15:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:15:00,677 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 19:15:00,678 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:15:00,678 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:15:00,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:15:00,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:15:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:15:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:15:00,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:00,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:00,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:15:00,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:15:00,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:15:00,688 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:15:00,688 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:15:00,688 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:15:00,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:15:00,689 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:15:00,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:15:00,689 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:15:00,689 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:15:00,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:15:00,690 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:15:00,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:15:00,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:15:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:15:00,690 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:15:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:15:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:15:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:15:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:15:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:15:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:15:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:15:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:15:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:15:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:15:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:15:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:15:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:15:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:15:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:15:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:15:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:15:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:15:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:15:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:15:00,696 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:15:00,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:00,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:15:00,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:15:00,697 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:15:00,697 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 19:15:00,697 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:15:00,697 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:15:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:15:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:15:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:15:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:15:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:15:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:15:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:15:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:15:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:15:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:15:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:15:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:15:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:15:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:15:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:15:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:15:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:15:02,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:15:02,934 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:15:02,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:02 BoogieIcfgContainer [2021-02-21 19:15:02,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:15:02,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:15:02,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:15:02,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:15:02,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:14:59" (1/3) ... [2021-02-21 19:15:02,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6c48b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:02, skipping insertion in model container [2021-02-21 19:15:02,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00" (2/3) ... [2021-02-21 19:15:02,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6c48b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:02, skipping insertion in model container [2021-02-21 19:15:02,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:02" (3/3) ... [2021-02-21 19:15:02,951 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product15.cil.c [2021-02-21 19:15:02,960 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:15:02,970 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:15:02,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:15:03,026 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:15:03,026 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:15:03,027 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:15:03,027 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:15:03,027 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:15:03,027 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:15:03,027 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:15:03,027 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:15:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-21 19:15:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:15:03,083 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:03,085 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] [2021-02-21 19:15:03,087 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 98157041, now seen corresponding path program 1 times [2021-02-21 19:15:03,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:03,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065792910] [2021-02-21 19:15:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:03,217 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,242 WARN L202 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:04,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:04,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:04,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:04,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:04,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:04,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:04,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:04,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:04,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:04,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:15:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:04,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:04,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:04,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:04,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:15:04,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065792910] [2021-02-21 19:15:04,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:04,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:15:04,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586156251] [2021-02-21 19:15:04,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:15:04,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:04,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:15:04,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:15:04,583 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-21 19:15:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:06,746 INFO L93 Difference]: Finished difference Result 421 states and 504 transitions. [2021-02-21 19:15:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:15:06,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:15:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:06,769 INFO L225 Difference]: With dead ends: 421 [2021-02-21 19:15:06,770 INFO L226 Difference]: Without dead ends: 270 [2021-02-21 19:15:06,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:15:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-21 19:15:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 229. [2021-02-21 19:15:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-21 19:15:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2021-02-21 19:15:07,050 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 147 [2021-02-21 19:15:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:07,051 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2021-02-21 19:15:07,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:15:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2021-02-21 19:15:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:15:07,059 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:07,059 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] [2021-02-21 19:15:07,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:15:07,060 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:07,061 INFO L82 PathProgramCache]: Analyzing trace with hash 841265213, now seen corresponding path program 1 times [2021-02-21 19:15:07,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:07,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048003517] [2021-02-21 19:15:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:07,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:07,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,618 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:15:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:15:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:07,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:07,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:15:07,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048003517] [2021-02-21 19:15:07,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:07,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:15:07,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917719837] [2021-02-21 19:15:07,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:15:07,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:07,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:15:07,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:15:07,823 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 4 states. [2021-02-21 19:15:08,818 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:09,949 INFO L93 Difference]: Finished difference Result 331 states and 370 transitions. [2021-02-21 19:15:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:15:09,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:15:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:09,968 INFO L225 Difference]: With dead ends: 331 [2021-02-21 19:15:09,969 INFO L226 Difference]: Without dead ends: 253 [2021-02-21 19:15:09,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:15:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-21 19:15:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2021-02-21 19:15:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-21 19:15:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-21 19:15:10,096 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 148 [2021-02-21 19:15:10,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:10,097 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-21 19:15:10,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:15:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-21 19:15:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:15:10,100 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:10,101 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] [2021-02-21 19:15:10,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:15:10,101 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1634241990, now seen corresponding path program 1 times [2021-02-21 19:15:10,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:10,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027906373] [2021-02-21 19:15:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:10,107 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:10,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:10,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:10,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:10,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:10,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:10,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:10,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:10,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:10,855 WARN L202 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:10,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:10,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:10,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:11,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:11,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:11,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:11,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:11,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:11,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:11,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:11,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:11,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:11,062 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:11,064 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:11,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:11,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:11,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:11,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:11,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:15:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:11,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:11,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:15:11,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027906373] [2021-02-21 19:15:11,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:11,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:15:11,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168594796] [2021-02-21 19:15:11,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:15:11,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:15:11,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:15:11,168 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 9 states. [2021-02-21 19:15:11,929 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:12,421 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:12,855 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:13,308 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:13,735 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:14,135 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:15,450 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:17,455 INFO L93 Difference]: Finished difference Result 554 states and 637 transitions. [2021-02-21 19:15:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:15:17,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:15:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:17,465 INFO L225 Difference]: With dead ends: 554 [2021-02-21 19:15:17,466 INFO L226 Difference]: Without dead ends: 450 [2021-02-21 19:15:17,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:15:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-02-21 19:15:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 387. [2021-02-21 19:15:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-21 19:15:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 431 transitions. [2021-02-21 19:15:17,713 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 431 transitions. Word has length 157 [2021-02-21 19:15:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:17,716 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 431 transitions. [2021-02-21 19:15:17,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:15:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 431 transitions. [2021-02-21 19:15:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:15:17,720 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:17,721 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] [2021-02-21 19:15:17,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:15:17,722 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash -801439050, now seen corresponding path program 1 times [2021-02-21 19:15:17,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:17,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264667955] [2021-02-21 19:15:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:17,730 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:17,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:17,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:17,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:17,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:17,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:17,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:17,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:17,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:17,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:17,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,271 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:18,397 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:18,407 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:15:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:15:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:15:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:18,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:15:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:15:18,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264667955] [2021-02-21 19:15:18,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:18,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:15:18,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982634327] [2021-02-21 19:15:18,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:15:18,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:18,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:15:18,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:15:18,647 INFO L87 Difference]: Start difference. First operand 387 states and 431 transitions. Second operand 14 states. [2021-02-21 19:15:19,469 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:20,000 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:20,430 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:20,849 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:21,267 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:21,668 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:22,589 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:24,079 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:24,489 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:24,993 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:25,484 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:25,884 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:26,255 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:26,648 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:27,008 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:27,377 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:27,832 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:28,366 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:28,787 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:29,231 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:31,050 INFO L93 Difference]: Finished difference Result 1413 states and 1806 transitions. [2021-02-21 19:15:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:15:31,052 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-21 19:15:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:31,064 INFO L225 Difference]: With dead ends: 1413 [2021-02-21 19:15:31,064 INFO L226 Difference]: Without dead ends: 1141 [2021-02-21 19:15:31,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:15:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-02-21 19:15:31,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 868. [2021-02-21 19:15:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2021-02-21 19:15:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1004 transitions. [2021-02-21 19:15:31,597 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1004 transitions. Word has length 165 [2021-02-21 19:15:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:31,598 INFO L480 AbstractCegarLoop]: Abstraction has 868 states and 1004 transitions. [2021-02-21 19:15:31,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:15:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1004 transitions. [2021-02-21 19:15:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-21 19:15:31,603 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:31,603 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] [2021-02-21 19:15:31,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:15:31,604 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:31,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:31,605 INFO L82 PathProgramCache]: Analyzing trace with hash -595296028, now seen corresponding path program 1 times [2021-02-21 19:15:31,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:31,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232581958] [2021-02-21 19:15:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:31,609 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,078 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:32,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:15:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:15:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 19:15:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:15:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:15:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 19:15:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:32,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:32,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:15:32,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232581958] [2021-02-21 19:15:32,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:32,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:15:32,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543356342] [2021-02-21 19:15:32,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:15:32,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:32,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:15:32,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:15:32,289 INFO L87 Difference]: Start difference. First operand 868 states and 1004 transitions. Second operand 6 states. [2021-02-21 19:15:33,004 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:34,011 INFO L93 Difference]: Finished difference Result 1430 states and 1706 transitions. [2021-02-21 19:15:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:15:34,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2021-02-21 19:15:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:34,016 INFO L225 Difference]: With dead ends: 1430 [2021-02-21 19:15:34,016 INFO L226 Difference]: Without dead ends: 677 [2021-02-21 19:15:34,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:15:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-02-21 19:15:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 643. [2021-02-21 19:15:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-02-21 19:15:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 702 transitions. [2021-02-21 19:15:34,390 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 702 transitions. Word has length 175 [2021-02-21 19:15:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:34,390 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 702 transitions. [2021-02-21 19:15:34,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:15:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 702 transitions. [2021-02-21 19:15:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:15:34,396 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:34,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:15:34,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:15:34,397 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:34,398 INFO L82 PathProgramCache]: Analyzing trace with hash -466231491, now seen corresponding path program 1 times [2021-02-21 19:15:34,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:34,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932482425] [2021-02-21 19:15:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY