/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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:15:35,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:15:35,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:15:35,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:15:35,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:15:35,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:15:35,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:15:35,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:15:35,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:15:35,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:15:35,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:15:35,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:15:35,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:15:35,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:15:35,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:15:35,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:15:35,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:15:35,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:15:35,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:15:35,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:15:35,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:15:35,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:15:35,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:15:35,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:15:35,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:15:35,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:15:35,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:15:35,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:15:35,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:15:35,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:15:35,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:15:35,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:15:35,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:15:35,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:15:35,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:15:35,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:15:35,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:15:35,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:15:35,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:15:35,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:15:35,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:15:35,532 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 19:15:35,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:15:35,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:15:35,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:15:35,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:15:35,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:15:35,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:15:35,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:15:35,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:15:35,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:15:35,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:15:35,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:15:35,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:15:35,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:15:35,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:15:35,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:15:35,564 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:15:35,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:15:35,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:15:35,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:15:35,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:15:35,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:15:35,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:15:35,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:15:36,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:15:36,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:15:36,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:15:36,151 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:15:36,152 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:15:36,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product21.cil.c [2021-02-21 19:15:36,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14242d602/98e1d5e2529546c4a380192367766d3c/FLAG0dc12de78 [2021-02-21 19:15:37,056 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:15:37,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product21.cil.c [2021-02-21 19:15:37,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14242d602/98e1d5e2529546c4a380192367766d3c/FLAG0dc12de78 [2021-02-21 19:15:37,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14242d602/98e1d5e2529546c4a380192367766d3c [2021-02-21 19:15:37,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:15:37,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:15:37,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:37,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:15:37,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:15:37,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:15:37" (1/1) ... [2021-02-21 19:15:37,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd240c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:37, skipping insertion in model container [2021-02-21 19:15:37,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:15:37" (1/1) ... [2021-02-21 19:15:37,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:15:37,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:15:37,854 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_product21.cil.c[4740,4753] [2021-02-21 19:15:38,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:38,098 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:15:38,173 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_product21.cil.c[4740,4753] [2021-02-21 19:15:38,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:38,310 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:15:38,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38 WrapperNode [2021-02-21 19:15:38,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:38,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:15:38,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:15:38,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:15:38,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (1/1) ... [2021-02-21 19:15:38,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (1/1) ... [2021-02-21 19:15:38,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (1/1) ... [2021-02-21 19:15:38,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (1/1) ... [2021-02-21 19:15:38,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (1/1) ... [2021-02-21 19:15:38,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (1/1) ... [2021-02-21 19:15:38,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (1/1) ... [2021-02-21 19:15:38,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:15:38,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:15:38,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:15:38,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:15:38,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (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 19:15:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:15:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:15:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:15:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:15:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:15:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:15:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:15:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:15:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:15:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:15:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:15:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:15:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:15:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:15:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:15:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:15:38,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:15:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:15:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:15:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:15:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:15:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:15:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:15:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:15:38,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:15:38,626 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:15:38,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:15:38,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:15:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:15:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:15:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:15:38,631 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:15:38,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:15:38,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:15:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:15:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:15:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:15:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:15:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:15:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:15:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:15:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:15:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:15:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:15:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:15:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:15:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:15:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:15:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:15:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:15:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:15:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:15:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:15:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:15:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:15:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:15:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:15:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:15:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:15:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:15:39,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:15:39,848 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:15:39,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:39 BoogieIcfgContainer [2021-02-21 19:15:39,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:15:39,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:15:39,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:15:39,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:15:39,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:15:37" (1/3) ... [2021-02-21 19:15:39,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adee4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:39, skipping insertion in model container [2021-02-21 19:15:39,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:38" (2/3) ... [2021-02-21 19:15:39,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adee4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:39, skipping insertion in model container [2021-02-21 19:15:39,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:39" (3/3) ... [2021-02-21 19:15:39,863 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product21.cil.c [2021-02-21 19:15:39,871 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:15:39,878 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:15:39,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:15:39,947 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:15:39,947 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:15:39,948 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:15:39,948 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:15:39,948 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:15:39,949 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:15:39,949 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:15:39,949 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:15:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2021-02-21 19:15:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:15:40,008 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:40,010 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 19:15:40,010 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1191942639, now seen corresponding path program 1 times [2021-02-21 19:15:40,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:40,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176238213] [2021-02-21 19:15:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:40,135 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:40,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:40,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:40,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:40,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,068 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:15:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:41,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:41,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:41,413 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 19:15:41,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176238213] [2021-02-21 19:15:41,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:41,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:15:41,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588085796] [2021-02-21 19:15:41,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:15:41,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:15:41,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:15:41,448 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2021-02-21 19:15:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:43,431 INFO L93 Difference]: Finished difference Result 471 states and 560 transitions. [2021-02-21 19:15:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:15:43,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:15:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:43,470 INFO L225 Difference]: With dead ends: 471 [2021-02-21 19:15:43,471 INFO L226 Difference]: Without dead ends: 295 [2021-02-21 19:15:43,477 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 19:15:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-21 19:15:43,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 254. [2021-02-21 19:15:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-21 19:15:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 275 transitions. [2021-02-21 19:15:43,726 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 275 transitions. Word has length 147 [2021-02-21 19:15:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:43,727 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 275 transitions. [2021-02-21 19:15:43,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:15:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 275 transitions. [2021-02-21 19:15:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:15:43,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:43,735 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 19:15:43,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:15:43,736 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1477241261, now seen corresponding path program 1 times [2021-02-21 19:15:43,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:43,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76902859] [2021-02-21 19:15:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:43,743 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:43,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:43,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:43,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:43,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:43,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:43,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,328 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:44,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:44,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:44,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:44,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:44,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:44,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:44,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:44,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:44,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:44,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:44,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:15:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:44,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:44,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:15:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:44,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:44,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:44,459 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 19:15:44,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76902859] [2021-02-21 19:15:44,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:44,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:15:44,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402991564] [2021-02-21 19:15:44,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:15:44,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:44,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:15:44,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:15:44,463 INFO L87 Difference]: Start difference. First operand 254 states and 275 transitions. Second operand 4 states. [2021-02-21 19:15:45,387 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:46,644 INFO L93 Difference]: Finished difference Result 387 states and 434 transitions. [2021-02-21 19:15:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:15:46,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:15:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:46,652 INFO L225 Difference]: With dead ends: 387 [2021-02-21 19:15:46,652 INFO L226 Difference]: Without dead ends: 278 [2021-02-21 19:15:46,659 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 19:15:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-21 19:15:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-21 19:15:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-21 19:15:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2021-02-21 19:15:46,769 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 148 [2021-02-21 19:15:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:46,771 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2021-02-21 19:15:46,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:15:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2021-02-21 19:15:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:15:46,774 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:46,775 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 19:15:46,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:15:46,775 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash 73698318, now seen corresponding path program 1 times [2021-02-21 19:15:46,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:46,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105515033] [2021-02-21 19:15:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:46,781 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:46,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:46,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:46,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:46,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:46,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:46,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:46,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:46,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:46,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:46,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,317 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:47,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:47,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:47,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:47,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:47,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:47,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:47,459 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:47,460 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:47,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:47,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:15:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:47,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:47,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:47,539 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 19:15:47,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105515033] [2021-02-21 19:15:47,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:47,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:15:47,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654508070] [2021-02-21 19:15:47,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:15:47,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:47,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:15:47,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:15:47,543 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 9 states. [2021-02-21 19:15:48,265 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:48,780 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:49,202 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:49,607 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:50,029 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:50,426 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:52,352 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2021-02-21 19:15:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:15:52,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:15:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:52,357 INFO L225 Difference]: With dead ends: 407 [2021-02-21 19:15:52,358 INFO L226 Difference]: Without dead ends: 278 [2021-02-21 19:15:52,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:15:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-21 19:15:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-21 19:15:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-21 19:15:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 261 transitions. [2021-02-21 19:15:52,455 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 261 transitions. Word has length 157 [2021-02-21 19:15:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:52,456 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 261 transitions. [2021-02-21 19:15:52,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:15:52,457 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 261 transitions. [2021-02-21 19:15:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 19:15:52,460 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:52,460 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] [2021-02-21 19:15:52,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:15:52,461 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash -29734683, now seen corresponding path program 1 times [2021-02-21 19:15:52,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:52,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668585433] [2021-02-21 19:15:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:52,465 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:52,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:52,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:52,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:52,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:52,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:52,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:52,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:52,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:52,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:52,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:52,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:52,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,017 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:53,144 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:53,146 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:15:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:15:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:15:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 19:15:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:53,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 19:15:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:53,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:53,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:53,381 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 19:15:53,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668585433] [2021-02-21 19:15:53,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:53,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:15:53,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515003250] [2021-02-21 19:15:53,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:15:53,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:53,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:15:53,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:15:53,385 INFO L87 Difference]: Start difference. First operand 244 states and 261 transitions. Second operand 14 states. [2021-02-21 19:15:54,216 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:54,780 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:55,200 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:55,612 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:56,080 WARN L202 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:56,496 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:57,443 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:59,361 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:59,810 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:00,464 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:00,953 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:01,357 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:01,787 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:16:02,211 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:16:02,625 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:03,019 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:03,563 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:04,127 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:16:04,572 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:05,114 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:06,737 INFO L93 Difference]: Finished difference Result 716 states and 857 transitions. [2021-02-21 19:16:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:16:06,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 170 [2021-02-21 19:16:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:06,746 INFO L225 Difference]: With dead ends: 716 [2021-02-21 19:16:06,747 INFO L226 Difference]: Without dead ends: 587 [2021-02-21 19:16:06,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:16:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-02-21 19:16:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 480. [2021-02-21 19:16:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2021-02-21 19:16:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 534 transitions. [2021-02-21 19:16:07,015 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 534 transitions. Word has length 170 [2021-02-21 19:16:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:07,016 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 534 transitions. [2021-02-21 19:16:07,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:16:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 534 transitions. [2021-02-21 19:16:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-21 19:16:07,020 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:07,020 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 19:16:07,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:16:07,021 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash -257600859, now seen corresponding path program 1 times [2021-02-21 19:16:07,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:07,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65328345] [2021-02-21 19:16:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:07,025 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:07,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:07,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:07,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:07,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:07,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,513 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 19:16:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:16:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:16:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:16:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:16:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 19:16:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:07,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:07,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:07,743 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 19:16:07,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65328345] [2021-02-21 19:16:07,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:07,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:16:07,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327542374] [2021-02-21 19:16:07,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:16:07,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:07,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:16:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:16:07,750 INFO L87 Difference]: Start difference. First operand 480 states and 534 transitions. Second operand 6 states. [2021-02-21 19:16:08,488 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:09,333 INFO L93 Difference]: Finished difference Result 697 states and 800 transitions. [2021-02-21 19:16:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:16:09,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2021-02-21 19:16:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:09,337 INFO L225 Difference]: With dead ends: 697 [2021-02-21 19:16:09,337 INFO L226 Difference]: Without dead ends: 332 [2021-02-21 19:16:09,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 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 19:16:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-02-21 19:16:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 311. [2021-02-21 19:16:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-02-21 19:16:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 328 transitions. [2021-02-21 19:16:09,510 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 328 transitions. Word has length 175 [2021-02-21 19:16:09,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:09,511 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 328 transitions. [2021-02-21 19:16:09,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:16:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 328 transitions. [2021-02-21 19:16:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-02-21 19:16:09,515 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:09,516 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, 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] [2021-02-21 19:16:09,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:16:09,517 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:09,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:09,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1851708491, now seen corresponding path program 1 times [2021-02-21 19:16:09,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:09,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333686047] [2021-02-21 19:16:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:10,160 WARN L202 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2021-02-21 19:16:10,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:10,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 252 [2021-02-21 19:16:10,684 WARN L202 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2021-02-21 19:16:10,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:10,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-02-21 19:16:11,296 WARN L202 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2021-02-21 19:16:11,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:11,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 256