/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_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:14:57,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:14:57,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:14:57,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:14:57,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:14:57,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:14:57,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:14:57,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:14:57,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:14:57,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:14:57,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:14:57,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:14:57,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:14:57,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:14:57,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:14:57,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:14:57,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:14:57,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:14:57,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:14:57,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:14:57,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:14:57,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:14:57,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:14:57,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:14:57,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:14:57,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:14:57,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:14:57,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:14:57,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:14:57,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:14:57,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:14:57,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:14:57,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:14:57,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:14:57,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:14:57,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:14:57,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:14:57,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:14:57,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:14:57,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:14:57,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:14:57,542 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 19:14:57,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:14:57,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:14:57,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:14:57,580 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:14:57,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:14:57,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:14:57,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:14:57,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:14:57,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:14:57,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:14:57,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:14:57,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:14:57,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:14:57,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:14:57,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:14:57,584 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:14:57,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:14:57,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:14:57,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:14:57,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:14:57,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:14:57,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:14:57,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:14:58,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:14:58,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:14:58,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:14:58,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:14:58,129 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:14:58,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product16.cil.c [2021-02-21 19:14:58,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798ae556d/2cfb96bc9bf644379f2ddffcb48c3c34/FLAGa9ce41d87 [2021-02-21 19:14:59,144 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:14:59,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product16.cil.c [2021-02-21 19:14:59,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798ae556d/2cfb96bc9bf644379f2ddffcb48c3c34/FLAGa9ce41d87 [2021-02-21 19:14:59,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798ae556d/2cfb96bc9bf644379f2ddffcb48c3c34 [2021-02-21 19:14:59,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:14:59,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:14:59,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:14:59,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:14:59,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:14:59,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:14:59" (1/1) ... [2021-02-21 19:14:59,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6322b9d0 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 19:14:59,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:14:59" (1/1) ... [2021-02-21 19:14:59,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:14:59,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:14:59,955 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_product16.cil.c[13860,13873] [2021-02-21 19:15:00,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:00,055 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:15:00,152 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_product16.cil.c[13860,13873] [2021-02-21 19:15:00,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:00,255 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:15:00,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:00 WrapperNode [2021-02-21 19:15:00,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:00,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:15:00,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:15:00,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:15:00,278 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 19:15:00,279 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 19:15:00,302 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 19:15:00,302 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 19:15:00,337 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 19:15:00,347 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 19:15:00,354 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 19:15:00,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:15:00,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:15:00,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:15:00,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:15:00,365 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 19:15:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:15:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:15:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:15:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:15:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:15:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:15:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:15:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:15:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:15:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:15:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:15:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:15:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:15:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:15:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:15:00,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:15:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:15:00,554 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:15:00,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:15:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:15:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:15:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:15:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:15:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:15:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:15:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 19:15:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:15:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:15:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:15:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:15:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:15:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:15:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:15:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:15:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:15:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:15:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:15:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:15:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:15:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:15:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:15:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:15:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:15:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:15:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:15:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:15:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:15:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:15:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:15:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:15:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:15:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:15:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:15:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:15:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:15:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:15:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:15:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:15:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:15:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:15:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:15:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:15:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:15:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:15:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:15:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:15:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:15:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:15:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:15:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:15:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:15:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:15:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:15:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:15:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:15:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:15:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:15:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:15:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 19:15:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:15:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:15:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:15:02,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:15:02,063 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:15:02,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:02 BoogieIcfgContainer [2021-02-21 19:15:02,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:15:02,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:15:02,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:15:02,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:15:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:14:59" (1/3) ... [2021-02-21 19:15:02,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c97860 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 19:15:02,076 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 19:15:02,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c97860 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 19:15:02,077 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 19:15:02,080 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product16.cil.c [2021-02-21 19:15:02,089 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:15:02,097 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:15:02,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:15:02,158 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:15:02,159 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:15:02,159 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:15:02,159 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:15:02,159 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:15:02,159 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:15:02,160 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:15:02,160 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:15:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states. [2021-02-21 19:15:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:15:02,219 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:02,224 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 19:15:02,225 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:02,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1156493338, now seen corresponding path program 1 times [2021-02-21 19:15:02,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:02,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488890372] [2021-02-21 19:15:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:02,380 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:02,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:02,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:02,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:02,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,435 WARN L202 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:15:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:03,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:03,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:03,741 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 19:15:03,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488890372] [2021-02-21 19:15:03,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:03,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:15:03,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628994414] [2021-02-21 19:15:03,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:15:03,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:03,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:15:03,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:15:03,787 INFO L87 Difference]: Start difference. First operand 295 states. Second operand 3 states. [2021-02-21 19:15:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:05,826 INFO L93 Difference]: Finished difference Result 430 states and 514 transitions. [2021-02-21 19:15:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:15:05,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:15:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:05,850 INFO L225 Difference]: With dead ends: 430 [2021-02-21 19:15:05,850 INFO L226 Difference]: Without dead ends: 275 [2021-02-21 19:15:05,858 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 19:15:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-02-21 19:15:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 233. [2021-02-21 19:15:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-21 19:15:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2021-02-21 19:15:06,075 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 147 [2021-02-21 19:15:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:06,077 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2021-02-21 19:15:06,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:15:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2021-02-21 19:15:06,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:15:06,083 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:06,083 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 19:15:06,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:15:06,084 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash 740809502, now seen corresponding path program 1 times [2021-02-21 19:15:06,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:06,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785466792] [2021-02-21 19:15:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:06,092 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:06,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,589 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:06,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:15:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:15:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:06,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:06,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:06,770 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 19:15:06,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785466792] [2021-02-21 19:15:06,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:06,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:15:06,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127613825] [2021-02-21 19:15:06,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:15:06,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:06,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:15:06,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:15:06,778 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand 4 states. [2021-02-21 19:15:07,739 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:08,863 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2021-02-21 19:15:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:15:08,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:15:08,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:08,869 INFO L225 Difference]: With dead ends: 336 [2021-02-21 19:15:08,870 INFO L226 Difference]: Without dead ends: 258 [2021-02-21 19:15:08,872 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 19:15:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-02-21 19:15:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 223. [2021-02-21 19:15:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-21 19:15:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2021-02-21 19:15:08,966 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 148 [2021-02-21 19:15:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:08,966 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2021-02-21 19:15:08,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:15:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2021-02-21 19:15:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:15:08,970 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:08,970 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] [2021-02-21 19:15:08,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:15:08,971 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1856709918, now seen corresponding path program 1 times [2021-02-21 19:15:08,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:08,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969833661] [2021-02-21 19:15:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:08,977 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:09,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:09,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:09,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,561 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:09,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:15:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:09,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:15:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:15:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:09,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:09,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:09,785 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 19:15:09,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969833661] [2021-02-21 19:15:09,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:09,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:15:09,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601076777] [2021-02-21 19:15:09,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:15:09,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:09,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:15:09,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:15:09,789 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand 10 states. [2021-02-21 19:15:10,699 WARN L202 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:11,193 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:11,568 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:15:11,985 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:12,382 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:12,797 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:14,006 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:16,406 INFO L93 Difference]: Finished difference Result 590 states and 688 transitions. [2021-02-21 19:15:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:15:16,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:15:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:16,413 INFO L225 Difference]: With dead ends: 590 [2021-02-21 19:15:16,413 INFO L226 Difference]: Without dead ends: 482 [2021-02-21 19:15:16,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:15:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-02-21 19:15:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 391. [2021-02-21 19:15:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2021-02-21 19:15:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 435 transitions. [2021-02-21 19:15:16,609 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 435 transitions. Word has length 161 [2021-02-21 19:15:16,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:16,610 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 435 transitions. [2021-02-21 19:15:16,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:15:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 435 transitions. [2021-02-21 19:15:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:15:16,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:16,614 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] [2021-02-21 19:15:16,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:15:16,615 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash -691588897, now seen corresponding path program 1 times [2021-02-21 19:15:16,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:16,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973017788] [2021-02-21 19:15:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:16,620 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:16,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:16,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:16,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:16,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:16,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:16,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:16,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:16,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:16,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:16,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:16,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:16,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,134 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:17,341 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:17,342 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:15:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:15:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:17,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:15:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:17,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:17,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:17,501 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 19:15:17,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973017788] [2021-02-21 19:15:17,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:17,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:15:17,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196634368] [2021-02-21 19:15:17,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:15:17,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:17,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:15:17,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:15:17,504 INFO L87 Difference]: Start difference. First operand 391 states and 435 transitions. Second operand 14 states. [2021-02-21 19:15:18,273 WARN L202 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:18,872 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:19,314 WARN L202 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:19,740 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:20,165 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:20,523 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:21,393 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:22,864 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:23,367 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:23,893 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:24,347 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:24,768 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:25,172 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:25,611 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:26,014 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:26,417 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:26,905 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:27,428 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:27,877 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:28,376 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:30,206 INFO L93 Difference]: Finished difference Result 1295 states and 1594 transitions. [2021-02-21 19:15:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:15:30,207 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:15:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:30,218 INFO L225 Difference]: With dead ends: 1295 [2021-02-21 19:15:30,218 INFO L226 Difference]: Without dead ends: 1019 [2021-02-21 19:15:30,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:15:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-02-21 19:15:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 880. [2021-02-21 19:15:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2021-02-21 19:15:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1016 transitions. [2021-02-21 19:15:30,654 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1016 transitions. Word has length 166 [2021-02-21 19:15:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:30,658 INFO L480 AbstractCegarLoop]: Abstraction has 880 states and 1016 transitions. [2021-02-21 19:15:30,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:15:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1016 transitions. [2021-02-21 19:15:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:15:30,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:30,665 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] [2021-02-21 19:15:30,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:15:30,666 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:30,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:30,668 INFO L82 PathProgramCache]: Analyzing trace with hash -343880864, now seen corresponding path program 1 times [2021-02-21 19:15:30,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:30,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895680860] [2021-02-21 19:15:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:30,674 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:30,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:30,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:30,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:30,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:30,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:30,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:30,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:30,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:30,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:30,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:30,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:30,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:30,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:30,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,122 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:15:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:15:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:15:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:15:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,349 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 19:15:31,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895680860] [2021-02-21 19:15:31,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:31,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:15:31,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569132613] [2021-02-21 19:15:31,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:15:31,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:15:31,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:15:31,356 INFO L87 Difference]: Start difference. First operand 880 states and 1016 transitions. Second operand 6 states. [2021-02-21 19:15:32,046 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:33,565 INFO L93 Difference]: Finished difference Result 1523 states and 1836 transitions. [2021-02-21 19:15:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:15:33,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:15:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:33,575 INFO L225 Difference]: With dead ends: 1523 [2021-02-21 19:15:33,575 INFO L226 Difference]: Without dead ends: 758 [2021-02-21 19:15:33,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:15:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-02-21 19:15:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 655. [2021-02-21 19:15:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2021-02-21 19:15:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 714 transitions. [2021-02-21 19:15:34,001 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 714 transitions. Word has length 171 [2021-02-21 19:15:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:34,002 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 714 transitions. [2021-02-21 19:15:34,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:15:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 714 transitions. [2021-02-21 19:15:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:15:34,007 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:34,008 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, 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] [2021-02-21 19:15:34,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:15:34,008 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1329033243, now seen corresponding path program 1 times [2021-02-21 19:15:34,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:34,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242906816] [2021-02-21 19:15:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY