/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_spec2_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:16:46,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:16:46,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:16:46,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:16:46,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:16:46,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:16:46,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:16:46,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:16:46,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:16:46,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:16:46,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:16:46,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:16:46,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:16:46,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:16:46,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:16:46,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:16:46,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:16:46,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:16:46,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:16:46,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:16:46,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:16:46,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:16:46,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:16:46,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:16:46,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:16:46,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:16:46,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:16:46,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:16:46,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:16:46,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:16:46,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:16:46,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:16:46,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:16:46,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:16:46,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:16:46,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:16:46,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:16:46,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:16:46,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:16:46,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:16:46,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:16:46,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:16:46,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:16:46,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:16:46,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:16:46,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:16:46,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:16:46,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:16:46,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:16:46,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:16:46,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:16:46,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:16:46,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:16:46,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:16:46,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:16:46,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:16:46,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:16:46,531 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:16:46,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:16:46,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:16:46,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:16:46,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:16:46,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:16:46,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:16:46,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:16:46,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:16:46,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:16:46,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:16:46,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:16:46,948 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:16:46,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2021-02-23 16:16:47,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451148298/ae4d467b95614184ae2d89efdd94ee28/FLAG63284bfc8 [2021-02-23 16:16:47,750 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:16:47,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2021-02-23 16:16:47,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451148298/ae4d467b95614184ae2d89efdd94ee28/FLAG63284bfc8 [2021-02-23 16:16:48,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451148298/ae4d467b95614184ae2d89efdd94ee28 [2021-02-23 16:16:48,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:16:48,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:16:48,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:16:48,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:16:48,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:16:48,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f57a937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48, skipping insertion in model container [2021-02-23 16:16:48,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:16:48,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:16:48,421 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_spec2_product35.cil.c[15445,15458] [2021-02-23 16:16:48,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:16:48,486 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:16:48,601 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_spec2_product35.cil.c[15445,15458] [2021-02-23 16:16:48,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:16:48,658 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:16:48,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48 WrapperNode [2021-02-23 16:16:48,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:16:48,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:16:48,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:16:48,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:16:48,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (1/1) ... [2021-02-23 16:16:48,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:16:48,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:16:48,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:16:48,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:16:48,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (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 [2021-02-23 16:16:48,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:16:48,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:16:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:16:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:16:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:16:48,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:16:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:16:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:16:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:16:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:16:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:16:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:16:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:16:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:16:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:16:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:16:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:16:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:16:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:16:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:16:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:16:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:16:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:16:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:16:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:16:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:16:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:16:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:16:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:16:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:16:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:16:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:16:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:16:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:16:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:16:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:16:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:16:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:16:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:16:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:16:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:16:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:16:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:16:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:16:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:16:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:16:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:16:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:16:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:16:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:16:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:16:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:16:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:16:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:16:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:16:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:16:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:16:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:16:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:16:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:16:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:16:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:16:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:16:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:16:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:16:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:16:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:16:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:16:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:16:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:16:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:16:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:16:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:16:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:16:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:16:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:16:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:16:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:16:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:16:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:16:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:16:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:16:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:16:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:16:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:16:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:16:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:16:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:16:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:16:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:16:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:16:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:16:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:16:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:16:49,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:16:49,979 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:16:49,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:16:49 BoogieIcfgContainer [2021-02-23 16:16:49,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:16:49,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:16:49,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:16:49,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:16:49,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:16:48" (1/3) ... [2021-02-23 16:16:49,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327dc3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:16:49, skipping insertion in model container [2021-02-23 16:16:49,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:16:48" (2/3) ... [2021-02-23 16:16:49,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327dc3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:16:49, skipping insertion in model container [2021-02-23 16:16:49,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:16:49" (3/3) ... [2021-02-23 16:16:49,994 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2021-02-23 16:16:50,002 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:16:50,008 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:16:50,027 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:16:50,061 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:16:50,061 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:16:50,061 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:16:50,062 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:16:50,062 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:16:50,063 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:16:50,063 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:16:50,063 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:16:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2021-02-23 16:16:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-23 16:16:50,137 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:16:50,138 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] [2021-02-23 16:16:50,138 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:16:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:16:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1204187767, now seen corresponding path program 1 times [2021-02-23 16:16:50,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:16:50,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779575590] [2021-02-23 16:16:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:16:50,239 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:16:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:50,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:50,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:50,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:50,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:50,880 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:16:50,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:16:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:50,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:50,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:16:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:50,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:50,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:16:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:50,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:50,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:16:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:51,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:51,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:51,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:16:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:51,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:51,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:16:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:51,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:51,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:16:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:51,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:51,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:16:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:51,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:51,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:16:51,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779575590] [2021-02-23 16:16:51,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:16:51,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:16:51,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130429152] [2021-02-23 16:16:51,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:16:51,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:16:51,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:16:51,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:16:51,127 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 4 states. [2021-02-23 16:16:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:16:52,595 INFO L93 Difference]: Finished difference Result 459 states and 543 transitions. [2021-02-23 16:16:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 16:16:52,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-23 16:16:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:16:52,615 INFO L225 Difference]: With dead ends: 459 [2021-02-23 16:16:52,615 INFO L226 Difference]: Without dead ends: 298 [2021-02-23 16:16:52,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:16:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-02-23 16:16:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 250. [2021-02-23 16:16:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-23 16:16:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-23 16:16:52,779 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 153 [2021-02-23 16:16:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:16:52,780 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-23 16:16:52,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:16:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-23 16:16:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-23 16:16:52,784 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:16:52,785 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] [2021-02-23 16:16:52,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:16:52,785 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:16:52,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:16:52,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1562640474, now seen corresponding path program 1 times [2021-02-23 16:16:52,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:16:52,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139530367] [2021-02-23 16:16:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:16:52,791 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:16:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:52,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:52,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:52,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:52,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:52,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:52,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,300 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:16:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:16:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:16:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:16:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:16:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:16:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:16:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:16:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:16:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:53,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:53,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:16:53,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139530367] [2021-02-23 16:16:53,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:16:53,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 16:16:53,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30005864] [2021-02-23 16:16:53,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 16:16:53,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:16:53,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 16:16:53,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:16:53,419 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 5 states. [2021-02-23 16:16:54,227 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:16:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:16:55,244 INFO L93 Difference]: Finished difference Result 378 states and 427 transitions. [2021-02-23 16:16:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 16:16:55,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-23 16:16:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:16:55,250 INFO L225 Difference]: With dead ends: 378 [2021-02-23 16:16:55,250 INFO L226 Difference]: Without dead ends: 287 [2021-02-23 16:16:55,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:16:55,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-23 16:16:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 240. [2021-02-23 16:16:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-23 16:16:55,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 257 transitions. [2021-02-23 16:16:55,352 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 257 transitions. Word has length 154 [2021-02-23 16:16:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:16:55,353 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 257 transitions. [2021-02-23 16:16:55,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 16:16:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 257 transitions. [2021-02-23 16:16:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-23 16:16:55,355 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:16:55,355 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] [2021-02-23 16:16:55,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:16:55,356 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:16:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:16:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 715094125, now seen corresponding path program 1 times [2021-02-23 16:16:55,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:16:55,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352748837] [2021-02-23 16:16:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:16:55,360 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:16:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:55,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:55,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:55,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:16:55,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:16:55,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:16:55,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:16:55,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,794 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:16:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:16:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:16:55,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:16:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:16:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:16:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:16:55,928 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:16:55,929 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:16:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:16:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:16:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:16:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:16:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:16:55,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:16:55,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:16:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:16:56,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352748837] [2021-02-23 16:16:56,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:16:56,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:16:56,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179031572] [2021-02-23 16:16:56,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:16:56,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:16:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:16:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:16:56,024 INFO L87 Difference]: Start difference. First operand 240 states and 257 transitions. Second operand 10 states. [2021-02-23 16:16:56,642 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:16:57,088 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:16:57,464 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:16:57,860 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:16:58,239 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:16:58,628 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:16:59,771 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:01,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:01,635 INFO L93 Difference]: Finished difference Result 621 states and 718 transitions. [2021-02-23 16:17:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:17:01,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2021-02-23 16:17:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:01,642 INFO L225 Difference]: With dead ends: 621 [2021-02-23 16:17:01,642 INFO L226 Difference]: Without dead ends: 501 [2021-02-23 16:17:01,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:17:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-02-23 16:17:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 416. [2021-02-23 16:17:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2021-02-23 16:17:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 461 transitions. [2021-02-23 16:17:01,843 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 461 transitions. Word has length 163 [2021-02-23 16:17:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:01,844 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 461 transitions. [2021-02-23 16:17:01,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:17:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 461 transitions. [2021-02-23 16:17:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:17:01,847 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:01,848 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] [2021-02-23 16:17:01,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:17:01,848 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:01,849 INFO L82 PathProgramCache]: Analyzing trace with hash 968034684, now seen corresponding path program 1 times [2021-02-23 16:17:01,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:01,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899688852] [2021-02-23 16:17:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:01,852 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:01,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:01,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:01,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:01,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:01,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:01,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:01,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:01,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:01,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:01,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:01,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:01,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,254 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:02,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:02,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:17:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:02,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:17:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:17:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:17:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:02,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:02,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:02,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899688852] [2021-02-23 16:17:02,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:02,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:17:02,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051783482] [2021-02-23 16:17:02,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:17:02,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:17:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:17:02,477 INFO L87 Difference]: Start difference. First operand 416 states and 461 transitions. Second operand 7 states. [2021-02-23 16:17:03,299 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:05,261 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:05,994 INFO L93 Difference]: Finished difference Result 1046 states and 1243 transitions. [2021-02-23 16:17:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:17:05,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2021-02-23 16:17:06,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:06,015 INFO L225 Difference]: With dead ends: 1046 [2021-02-23 16:17:06,015 INFO L226 Difference]: Without dead ends: 750 [2021-02-23 16:17:06,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:17:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-02-23 16:17:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 622. [2021-02-23 16:17:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2021-02-23 16:17:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 691 transitions. [2021-02-23 16:17:06,305 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 691 transitions. Word has length 171 [2021-02-23 16:17:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:06,306 INFO L480 AbstractCegarLoop]: Abstraction has 622 states and 691 transitions. [2021-02-23 16:17:06,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:17:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 691 transitions. [2021-02-23 16:17:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:17:06,308 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:06,309 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] [2021-02-23 16:17:06,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:17:06,309 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:06,310 INFO L82 PathProgramCache]: Analyzing trace with hash 98300663, now seen corresponding path program 1 times [2021-02-23 16:17:06,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:06,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114339231] [2021-02-23 16:17:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:06,313 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,687 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:06,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:17:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:17:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:17:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:06,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:06,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:06,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114339231] [2021-02-23 16:17:06,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:06,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:17:06,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649221515] [2021-02-23 16:17:06,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:17:06,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:17:06,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:17:06,879 INFO L87 Difference]: Start difference. First operand 622 states and 691 transitions. Second operand 10 states. [2021-02-23 16:17:07,535 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:08,954 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:09,363 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:09,783 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:10,157 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:10,522 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:10,880 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:11,266 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:11,788 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:13,518 INFO L93 Difference]: Finished difference Result 1669 states and 1966 transitions. [2021-02-23 16:17:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 16:17:13,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:17:13,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:13,534 INFO L225 Difference]: With dead ends: 1669 [2021-02-23 16:17:13,534 INFO L226 Difference]: Without dead ends: 1167 [2021-02-23 16:17:13,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-23 16:17:13,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-02-23 16:17:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1020. [2021-02-23 16:17:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2021-02-23 16:17:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1138 transitions. [2021-02-23 16:17:14,004 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1138 transitions. Word has length 172 [2021-02-23 16:17:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:14,005 INFO L480 AbstractCegarLoop]: Abstraction has 1020 states and 1138 transitions. [2021-02-23 16:17:14,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:17:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1138 transitions. [2021-02-23 16:17:14,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:17:14,009 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:14,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:14,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:17:14,010 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:14,011 INFO L82 PathProgramCache]: Analyzing trace with hash 205616419, now seen corresponding path program 1 times [2021-02-23 16:17:14,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:14,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032048491] [2021-02-23 16:17:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:14,014 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,426 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:17:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:17:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:17:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:14,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:14,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:14,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:14,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032048491] [2021-02-23 16:17:14,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:14,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:17:14,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755563888] [2021-02-23 16:17:14,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:17:14,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:14,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:17:14,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:17:14,608 INFO L87 Difference]: Start difference. First operand 1020 states and 1138 transitions. Second operand 11 states. [2021-02-23 16:17:15,250 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:16,768 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:17,213 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:17,701 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:18,084 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:17:18,448 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:19,193 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:19,548 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:20,027 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:21,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:21,242 INFO L93 Difference]: Finished difference Result 2190 states and 2556 transitions. [2021-02-23 16:17:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 16:17:21,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2021-02-23 16:17:21,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:21,252 INFO L225 Difference]: With dead ends: 2190 [2021-02-23 16:17:21,253 INFO L226 Difference]: Without dead ends: 1290 [2021-02-23 16:17:21,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 16:17:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-02-23 16:17:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1014. [2021-02-23 16:17:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2021-02-23 16:17:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1126 transitions. [2021-02-23 16:17:21,814 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1126 transitions. Word has length 177 [2021-02-23 16:17:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:21,814 INFO L480 AbstractCegarLoop]: Abstraction has 1014 states and 1126 transitions. [2021-02-23 16:17:21,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:17:21,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1126 transitions. [2021-02-23 16:17:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-23 16:17:21,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:21,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:21,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:17:21,822 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:21,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1267435166, now seen corresponding path program 1 times [2021-02-23 16:17:21,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:21,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237034828] [2021-02-23 16:17:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:21,827 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:21,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:21,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:21,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:21,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:21,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,189 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:22,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:17:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:22,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:22,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:22,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:17:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:17:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:22,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:22,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:22,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237034828] [2021-02-23 16:17:22,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:22,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:17:22,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463596272] [2021-02-23 16:17:22,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:17:22,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:22,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:17:22,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:17:22,458 INFO L87 Difference]: Start difference. First operand 1014 states and 1126 transitions. Second operand 14 states. [2021-02-23 16:17:23,222 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:23,550 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:17:23,919 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:24,288 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:24,646 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:25,728 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:26,105 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:26,505 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:26,912 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:27,293 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:29,075 INFO L93 Difference]: Finished difference Result 2340 states and 2815 transitions. [2021-02-23 16:17:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:17:29,076 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 201 [2021-02-23 16:17:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:29,085 INFO L225 Difference]: With dead ends: 2340 [2021-02-23 16:17:29,085 INFO L226 Difference]: Without dead ends: 1446 [2021-02-23 16:17:29,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-23 16:17:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-02-23 16:17:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1038. [2021-02-23 16:17:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2021-02-23 16:17:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1150 transitions. [2021-02-23 16:17:29,568 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1150 transitions. Word has length 201 [2021-02-23 16:17:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:29,569 INFO L480 AbstractCegarLoop]: Abstraction has 1038 states and 1150 transitions. [2021-02-23 16:17:29,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:17:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1150 transitions. [2021-02-23 16:17:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-23 16:17:29,573 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:29,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:29,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:17:29,574 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:29,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:29,574 INFO L82 PathProgramCache]: Analyzing trace with hash -127641342, now seen corresponding path program 1 times [2021-02-23 16:17:29,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:29,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245605965] [2021-02-23 16:17:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:29,577 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,921 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:29,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:29,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:29,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:17:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:30,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:30,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:30,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:30,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:30,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:30,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:17:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:30,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:30,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:17:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:30,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:17:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:30,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:30,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:30,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245605965] [2021-02-23 16:17:30,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:30,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:17:30,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216562951] [2021-02-23 16:17:30,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:17:30,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:30,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:17:30,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:17:30,149 INFO L87 Difference]: Start difference. First operand 1038 states and 1150 transitions. Second operand 11 states. [2021-02-23 16:17:31,693 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:17:32,079 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:17:32,479 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-23 16:17:32,869 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:33,270 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:17:33,657 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:17:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:35,261 INFO L93 Difference]: Finished difference Result 2376 states and 2814 transitions. [2021-02-23 16:17:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:17:35,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 201 [2021-02-23 16:17:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:35,270 INFO L225 Difference]: With dead ends: 2376 [2021-02-23 16:17:35,270 INFO L226 Difference]: Without dead ends: 1458 [2021-02-23 16:17:35,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:17:35,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-02-23 16:17:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1070. [2021-02-23 16:17:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2021-02-23 16:17:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1182 transitions. [2021-02-23 16:17:35,721 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1182 transitions. Word has length 201 [2021-02-23 16:17:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:35,722 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1182 transitions. [2021-02-23 16:17:35,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:17:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1182 transitions. [2021-02-23 16:17:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-23 16:17:35,727 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:35,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:35,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:17:35,727 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:35,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:35,728 INFO L82 PathProgramCache]: Analyzing trace with hash 896409439, now seen corresponding path program 1 times [2021-02-23 16:17:35,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:35,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948765619] [2021-02-23 16:17:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:35,731 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:35,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:35,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:35,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:35,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:35,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:35,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:35,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:35,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:35,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:35,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:17:35,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:35,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,121 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:36,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:17:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:17:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:17:36,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:17:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:17:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:17:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:36,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:36,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:36,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948765619] [2021-02-23 16:17:36,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:36,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:17:36,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518230890] [2021-02-23 16:17:36,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:17:36,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:36,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:17:36,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:17:36,330 INFO L87 Difference]: Start difference. First operand 1070 states and 1182 transitions. Second operand 8 states. [2021-02-23 16:17:36,950 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:37,734 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:41,271 INFO L93 Difference]: Finished difference Result 3612 states and 4405 transitions. [2021-02-23 16:17:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 16:17:41,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2021-02-23 16:17:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:41,287 INFO L225 Difference]: With dead ends: 3612 [2021-02-23 16:17:41,287 INFO L226 Difference]: Without dead ends: 2662 [2021-02-23 16:17:41,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2021-02-23 16:17:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-02-23 16:17:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2112. [2021-02-23 16:17:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2021-02-23 16:17:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2388 transitions. [2021-02-23 16:17:42,413 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2388 transitions. Word has length 201 [2021-02-23 16:17:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:42,414 INFO L480 AbstractCegarLoop]: Abstraction has 2112 states and 2388 transitions. [2021-02-23 16:17:42,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:17:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2388 transitions. [2021-02-23 16:17:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-02-23 16:17:42,420 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:42,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:42,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:17:42,421 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:42,421 INFO L82 PathProgramCache]: Analyzing trace with hash 297437834, now seen corresponding path program 1 times [2021-02-23 16:17:42,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:42,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533596878] [2021-02-23 16:17:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:42,425 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:42,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:42,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:42,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:42,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,822 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:42,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:42,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:17:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:17:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:17:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:17:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:17:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:17:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-23 16:17:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-23 16:17:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:42,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:42,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:42,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533596878] [2021-02-23 16:17:42,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:42,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:17:42,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541608501] [2021-02-23 16:17:42,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:17:42,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:42,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:17:42,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:17:42,971 INFO L87 Difference]: Start difference. First operand 2112 states and 2388 transitions. Second operand 8 states. [2021-02-23 16:17:43,634 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:17:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:47,675 INFO L93 Difference]: Finished difference Result 4174 states and 5069 transitions. [2021-02-23 16:17:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 16:17:47,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2021-02-23 16:17:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:47,700 INFO L225 Difference]: With dead ends: 4174 [2021-02-23 16:17:47,700 INFO L226 Difference]: Without dead ends: 4171 [2021-02-23 16:17:47,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-02-23 16:17:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2021-02-23 16:17:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 3260. [2021-02-23 16:17:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3260 states. [2021-02-23 16:17:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 3706 transitions. [2021-02-23 16:17:48,908 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 3706 transitions. Word has length 206 [2021-02-23 16:17:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:48,909 INFO L480 AbstractCegarLoop]: Abstraction has 3260 states and 3706 transitions. [2021-02-23 16:17:48,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:17:48,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 3706 transitions. [2021-02-23 16:17:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-02-23 16:17:48,916 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:48,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:48,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:17:48,917 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1934465613, now seen corresponding path program 1 times [2021-02-23 16:17:48,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:48,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019872206] [2021-02-23 16:17:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:48,982 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-23 16:17:49,295 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:49,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:49,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-23 16:17:49,673 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:49,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:49,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-02-23 16:17:49,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:49,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:49,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:49,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,026 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:50,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-02-23 16:17:50,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,385 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:50,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-02-23 16:17:50,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:50,785 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2021-02-23 16:17:50,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-02-23 16:17:50,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:50,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,093 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:51,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-23 16:17:51,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,623 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:51,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-23 16:17:51,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:51,970 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2021-02-23 16:17:51,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-02-23 16:17:51,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:51,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,334 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2021-02-23 16:17:52,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-02-23 16:17:52,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:52,728 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:52,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-02-23 16:17:52,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:52,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:53,096 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:53,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:53,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-23 16:17:53,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:53,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:53,458 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:53,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:53,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-23 16:17:53,810 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:53,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:53,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-23 16:17:53,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:53,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:53,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:53,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,152 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2021-02-23 16:17:54,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 16:17:54,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,465 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:54,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-02-23 16:17:54,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:54,830 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2021-02-23 16:17:54,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:54,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-02-23 16:17:54,836 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 16:17:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:17:55,308 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:17:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:17:55,585 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:17:55,902 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:17:55,903 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:17:55,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 16:17:55,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:17:55 BoogieIcfgContainer [2021-02-23 16:17:55,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:17:55,934 INFO L168 Benchmark]: Toolchain (without parser) took 67903.03 ms. Allocated memory was 163.6 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 138.7 MB in the beginning and 677.7 MB in the end (delta: -539.0 MB). Peak memory consumption was 610.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:55,934 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 163.6 MB. Free memory is still 142.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:17:55,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.08 ms. Allocated memory is still 163.6 MB. Free memory was 137.6 MB in the beginning and 117.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:55,935 INFO L168 Benchmark]: Boogie Preprocessor took 92.01 ms. Allocated memory is still 163.6 MB. Free memory was 117.1 MB in the beginning and 113.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:55,935 INFO L168 Benchmark]: RCFGBuilder took 1231.24 ms. Allocated memory was 163.6 MB in the beginning and 201.3 MB in the end (delta: 37.7 MB). Free memory was 113.2 MB in the beginning and 137.1 MB in the end (delta: -24.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:55,935 INFO L168 Benchmark]: TraceAbstraction took 65946.76 ms. Allocated memory was 201.3 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 136.6 MB in the beginning and 677.7 MB in the end (delta: -541.1 MB). Peak memory consumption was 568.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:17:55,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 163.6 MB. Free memory is still 142.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 610.08 ms. Allocated memory is still 163.6 MB. Free memory was 137.6 MB in the beginning and 117.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.01 ms. Allocated memory is still 163.6 MB. Free memory was 117.1 MB in the beginning and 113.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1231.24 ms. Allocated memory was 163.6 MB in the beginning and 201.3 MB in the end (delta: 37.7 MB). Free memory was 113.2 MB in the beginning and 137.1 MB in the end (delta: -24.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 65946.76 ms. Allocated memory was 201.3 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 136.6 MB in the beginning and 677.7 MB in the end (delta: -541.1 MB). Peak memory consumption was 568.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 738]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L418] int pumpRunning = 0; [L419] int systemActive = 1; [L657] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L725] int retValue_acc ; [L728] retValue_acc = 1 [L729] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L662] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L590] int splverifierCounter ; [L591] int tmp ; [L592] int tmp___0 ; [L593] int tmp___1 ; [L594] int tmp___2 ; [L597] splverifierCounter = 0 [L599] COND TRUE 1 [L601] COND TRUE splverifierCounter < 4 [L607] tmp = __VERIFIER_nondet_int() [L609] COND TRUE \read(tmp) [L611] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L611] RET waterRise() [L617] tmp___0 = __VERIFIER_nondet_int() [L619] COND TRUE \read(tmp___0) [L621] CALL changeMethaneLevel() [L871] COND FALSE !(\read(methaneLevelCritical)) [L874] methaneLevelCritical = 1 [L621] RET changeMethaneLevel() [L627] tmp___2 = __VERIFIER_nondet_int() [L629] COND TRUE \read(tmp___2) [L644] CALL timeShift() [L426] COND FALSE !(\read(pumpRunning)) [L433] COND TRUE \read(systemActive) [L435] CALL processEnvironment() [L455] int tmp ; [L458] COND TRUE ! pumpRunning [L460] CALL, EXPR isHighWaterLevel() [L552] int retValue_acc ; [L553] int tmp ; [L554] int tmp___0 ; [L558] CALL, EXPR isHighWaterSensorDry() [L921] int retValue_acc ; [L924] COND FALSE !(waterLevel < 2) [L928] retValue_acc = 0 [L929] return (retValue_acc); [L558] RET, EXPR isHighWaterSensorDry() [L558] tmp = isHighWaterSensorDry() [L560] COND FALSE !(\read(tmp)) [L563] tmp___0 = 1 [L565] retValue_acc = tmp___0 [L566] return (retValue_acc); [L460] RET, EXPR isHighWaterLevel() [L460] tmp = isHighWaterLevel() [L462] COND TRUE \read(tmp) [L464] CALL activatePump() [L483] pumpRunning = 1 [L464] RET activatePump() [L435] RET processEnvironment() [L441] CALL __utac_acc__Specification2_spec__2() [L667] int tmp ; [L668] int tmp___0 ; [L672] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L672] RET, EXPR isMethaneLevelCritical() [L672] tmp = isMethaneLevelCritical() [L674] COND TRUE \read(tmp) [L676] CALL, EXPR isPumpRunning() [L507] int retValue_acc ; [L510] retValue_acc = pumpRunning [L511] return (retValue_acc); [L676] RET, EXPR isPumpRunning() [L676] tmp___0 = isPumpRunning() [L678] COND TRUE \read(tmp___0) [L679] COND FALSE !(\read(methAndRunningLastTime)) [L684] methAndRunningLastTime = 1 [L441] RET __utac_acc__Specification2_spec__2() [L644] RET timeShift() [L599] COND TRUE 1 [L601] COND TRUE splverifierCounter < 4 [L607] tmp = __VERIFIER_nondet_int() [L609] COND FALSE !(\read(tmp)) [L617] tmp___0 = __VERIFIER_nondet_int() [L619] COND FALSE !(\read(tmp___0)) [L627] tmp___2 = __VERIFIER_nondet_int() [L629] COND TRUE \read(tmp___2) [L644] CALL timeShift() [L426] COND TRUE \read(pumpRunning) [L428] CALL lowerWaterLevel() [L847] COND TRUE waterLevel > 0 [L848] waterLevel = waterLevel - 1 [L428] RET lowerWaterLevel() [L433] COND TRUE \read(systemActive) [L435] CALL processEnvironment() [L455] int tmp ; [L458] COND FALSE !(! pumpRunning) [L473] FCALL processEnvironment__wrappee__base() [L435] RET processEnvironment() [L441] CALL __utac_acc__Specification2_spec__2() [L667] int tmp ; [L668] int tmp___0 ; [L672] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L672] RET, EXPR isMethaneLevelCritical() [L672] tmp = isMethaneLevelCritical() [L674] COND TRUE \read(tmp) [L676] CALL, EXPR isPumpRunning() [L507] int retValue_acc ; [L510] retValue_acc = pumpRunning [L511] return (retValue_acc); [L676] RET, EXPR isPumpRunning() [L676] tmp___0 = isPumpRunning() [L678] COND TRUE \read(tmp___0) [L679] COND TRUE \read(methAndRunningLastTime) [L681] CALL __automaton_fail() [L738] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 65.8s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 47.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2360 SDtfs, 6324 SDslu, 4764 SDs, 0 SdLazy, 8937 SolverSat, 1747 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3260occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 2988 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...