/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:43:17,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:43:17,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:43:17,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:43:17,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:43:17,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:43:17,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:43:17,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:43:17,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:43:17,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:43:17,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:43:17,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:43:17,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:43:17,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:43:17,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:43:17,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:43:17,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:43:17,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:43:17,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:43:17,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:43:17,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:43:17,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:43:17,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:43:17,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:43:17,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:43:17,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:43:17,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:43:17,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:43:17,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:43:17,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:43:17,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:43:17,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:43:17,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:43:17,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:43:17,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:43:17,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:43:17,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:43:17,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:43:17,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:43:17,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:43:17,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:43:17,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:43:17,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:43:17,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:43:17,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:43:17,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:43:17,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:43:17,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:43:17,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:43:17,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:43:17,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:43:17,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:43:17,955 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:43:17,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:43:17,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:43:17,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:43:17,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:43:17,957 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:43:17,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:43:17,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:43:17,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:43:17,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:43:17,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:43:17,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:43:17,958 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:43:18,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:43:18,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:43:18,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:43:18,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:43:18,527 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:43:18,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2021-02-21 19:43:18,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176e30a59/b03f1609dc1a43de912ec50378749fb6/FLAG0d0fe43ff [2021-02-21 19:43:19,440 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:43:19,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2021-02-21 19:43:19,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176e30a59/b03f1609dc1a43de912ec50378749fb6/FLAG0d0fe43ff [2021-02-21 19:43:19,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176e30a59/b03f1609dc1a43de912ec50378749fb6 [2021-02-21 19:43:19,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:43:19,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:43:19,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:43:19,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:43:19,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:43:19,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:43:19" (1/1) ... [2021-02-21 19:43:19,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529f9725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:19, skipping insertion in model container [2021-02-21 19:43:19,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:43:19" (1/1) ... [2021-02-21 19:43:19,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:43:19,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:43:20,101 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c[8616,8629] [2021-02-21 19:43:20,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:43:20,197 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:43:20,254 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c[8616,8629] [2021-02-21 19:43:20,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:43:20,377 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:43:20,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20 WrapperNode [2021-02-21 19:43:20,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:43:20,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:43:20,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:43:20,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:43:20,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... [2021-02-21 19:43:20,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... [2021-02-21 19:43:20,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... [2021-02-21 19:43:20,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... [2021-02-21 19:43:20,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... [2021-02-21 19:43:20,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... [2021-02-21 19:43:20,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... [2021-02-21 19:43:20,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:43:20,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:43:20,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:43:20,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:43:20,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:43:20,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:43:20,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:43:20,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:43:20,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:43:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:43:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:43:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:43:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:43:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:43:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:43:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:43:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:43:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:43:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:43:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:43:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:43:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:43:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:43:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:43:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:43:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:43:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:43:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:43:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:43:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:43:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:43:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:43:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:43:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:43:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:43:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:43:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:43:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:43:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:43:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:43:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:43:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:43:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:43:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:43:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:43:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:43:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:43:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:43:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:43:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:43:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:43:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:43:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:43:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:43:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:43:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:43:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:43:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:43:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:43:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:43:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:43:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:43:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:43:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:43:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:43:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:43:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:43:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:43:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:43:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:43:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:43:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:43:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:43:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:43:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:43:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:43:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:43:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:43:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:43:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:43:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:43:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:43:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:43:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:43:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:43:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:43:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:43:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:43:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:43:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:43:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:43:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:43:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:43:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:43:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:43:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:43:22,368 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:43:22,368 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:43:22,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:43:22 BoogieIcfgContainer [2021-02-21 19:43:22,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:43:22,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:43:22,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:43:22,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:43:22,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:43:19" (1/3) ... [2021-02-21 19:43:22,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23eef93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:43:22, skipping insertion in model container [2021-02-21 19:43:22,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:43:20" (2/3) ... [2021-02-21 19:43:22,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23eef93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:43:22, skipping insertion in model container [2021-02-21 19:43:22,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:43:22" (3/3) ... [2021-02-21 19:43:22,382 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2021-02-21 19:43:22,390 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:43:22,396 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:43:22,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:43:22,457 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:43:22,457 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:43:22,457 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:43:22,457 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:43:22,459 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:43:22,459 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:43:22,459 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:43:22,459 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:43:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2021-02-21 19:43:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:43:22,538 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:22,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:22,540 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:22,547 INFO L82 PathProgramCache]: Analyzing trace with hash 532742290, now seen corresponding path program 1 times [2021-02-21 19:43:22,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:22,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478071597] [2021-02-21 19:43:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:22,636 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:22,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:22,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:22,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:22,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,317 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:23,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:23,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:23,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:23,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:23,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:23,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:23,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:23,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:23,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:23,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:43:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:23,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:23,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:43:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:23,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:23,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:23,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478071597] [2021-02-21 19:43:23,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:23,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:43:23,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157300533] [2021-02-21 19:43:23,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:43:23,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:23,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:43:23,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:43:23,634 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 3 states. [2021-02-21 19:43:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:25,333 INFO L93 Difference]: Finished difference Result 509 states and 605 transitions. [2021-02-21 19:43:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:43:25,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:43:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:25,369 INFO L225 Difference]: With dead ends: 509 [2021-02-21 19:43:25,369 INFO L226 Difference]: Without dead ends: 315 [2021-02-21 19:43:25,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:43:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-02-21 19:43:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 272. [2021-02-21 19:43:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-02-21 19:43:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 296 transitions. [2021-02-21 19:43:25,605 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 296 transitions. Word has length 147 [2021-02-21 19:43:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:25,609 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 296 transitions. [2021-02-21 19:43:25,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:43:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 296 transitions. [2021-02-21 19:43:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:43:25,621 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:25,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:25,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:43:25,623 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:25,624 INFO L82 PathProgramCache]: Analyzing trace with hash 37641117, now seen corresponding path program 1 times [2021-02-21 19:43:25,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:25,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873582590] [2021-02-21 19:43:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:25,634 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:25,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:25,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:25,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:25,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:25,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:25,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,061 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:26,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:26,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:26,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:26,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:26,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:26,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:26,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:26,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:26,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:26,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:43:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:26,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:26,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:43:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:26,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:26,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:26,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873582590] [2021-02-21 19:43:26,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:26,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:43:26,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034684272] [2021-02-21 19:43:26,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:43:26,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:26,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:43:26,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:43:26,197 INFO L87 Difference]: Start difference. First operand 272 states and 296 transitions. Second operand 4 states. [2021-02-21 19:43:26,843 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:27,852 INFO L93 Difference]: Finished difference Result 419 states and 471 transitions. [2021-02-21 19:43:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:43:27,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:43:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:27,858 INFO L225 Difference]: With dead ends: 419 [2021-02-21 19:43:27,858 INFO L226 Difference]: Without dead ends: 298 [2021-02-21 19:43:27,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:43:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-02-21 19:43:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 262. [2021-02-21 19:43:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-02-21 19:43:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 283 transitions. [2021-02-21 19:43:27,968 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 283 transitions. Word has length 148 [2021-02-21 19:43:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:27,969 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 283 transitions. [2021-02-21 19:43:27,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:43:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 283 transitions. [2021-02-21 19:43:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:43:27,972 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:27,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:27,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:43:27,973 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash 423990714, now seen corresponding path program 1 times [2021-02-21 19:43:27,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:27,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880456990] [2021-02-21 19:43:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:27,978 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:28,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:28,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:28,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:28,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:28,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:28,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:28,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,420 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:28,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:43:28,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:43:28,548 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:43:28,549 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:43:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:43:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:43:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:28,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:28,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:28,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880456990] [2021-02-21 19:43:28,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:28,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:43:28,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501948583] [2021-02-21 19:43:28,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:43:28,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:28,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:43:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:43:28,637 INFO L87 Difference]: Start difference. First operand 262 states and 283 transitions. Second operand 9 states. [2021-02-21 19:43:29,158 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:29,504 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:43:29,788 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:43:30,085 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:30,389 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:30,678 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:31,734 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:34,089 INFO L93 Difference]: Finished difference Result 687 states and 790 transitions. [2021-02-21 19:43:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:43:34,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:43:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:34,100 INFO L225 Difference]: With dead ends: 687 [2021-02-21 19:43:34,100 INFO L226 Difference]: Without dead ends: 540 [2021-02-21 19:43:34,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:43:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-02-21 19:43:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 473. [2021-02-21 19:43:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2021-02-21 19:43:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 529 transitions. [2021-02-21 19:43:34,427 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 529 transitions. Word has length 157 [2021-02-21 19:43:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:34,429 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 529 transitions. [2021-02-21 19:43:34,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:43:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 529 transitions. [2021-02-21 19:43:34,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:43:34,432 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:34,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:34,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:43:34,433 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:34,434 INFO L82 PathProgramCache]: Analyzing trace with hash -518020844, now seen corresponding path program 1 times [2021-02-21 19:43:34,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:34,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305545366] [2021-02-21 19:43:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:34,440 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:34,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:34,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:34,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:34,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:34,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:34,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,876 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:34,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:43:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:43:34,990 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:43:34,991 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:43:35,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:35,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:35,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:43:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:35,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:35,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:43:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:35,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:35,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:35,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:35,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:35,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:35,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:43:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:35,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:35,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:35,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305545366] [2021-02-21 19:43:35,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:35,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:43:35,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385155341] [2021-02-21 19:43:35,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:43:35,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:35,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:43:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:43:35,177 INFO L87 Difference]: Start difference. First operand 473 states and 529 transitions. Second operand 14 states. [2021-02-21 19:43:35,825 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:36,231 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:43:36,544 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:43:36,869 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:37,210 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:37,510 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:38,203 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:39,662 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:40,058 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:40,632 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:41,084 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:43:41,405 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:41,730 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:43:42,051 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:43:42,408 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:42,728 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:43,193 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:43,625 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:43:43,994 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:44,460 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:46,596 INFO L93 Difference]: Finished difference Result 1629 states and 2040 transitions. [2021-02-21 19:43:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:43:46,597 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:43:46,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:46,615 INFO L225 Difference]: With dead ends: 1629 [2021-02-21 19:43:46,615 INFO L226 Difference]: Without dead ends: 1271 [2021-02-21 19:43:46,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:43:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-02-21 19:43:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1136. [2021-02-21 19:43:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2021-02-21 19:43:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1342 transitions. [2021-02-21 19:43:47,366 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1342 transitions. Word has length 166 [2021-02-21 19:43:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:47,366 INFO L480 AbstractCegarLoop]: Abstraction has 1136 states and 1342 transitions. [2021-02-21 19:43:47,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:43:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1342 transitions. [2021-02-21 19:43:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:43:47,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:47,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:47,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:43:47,374 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:47,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1494626536, now seen corresponding path program 1 times [2021-02-21 19:43:47,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:47,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169874462] [2021-02-21 19:43:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:47,380 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,787 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:43:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:43:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:43:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:43:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:47,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:47,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:43:48,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169874462] [2021-02-21 19:43:48,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:48,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:43:48,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356337207] [2021-02-21 19:43:48,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:43:48,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:48,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:43:48,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:43:48,050 INFO L87 Difference]: Start difference. First operand 1136 states and 1342 transitions. Second operand 6 states. [2021-02-21 19:43:48,685 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:51,593 INFO L93 Difference]: Finished difference Result 2593 states and 3251 transitions. [2021-02-21 19:43:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:43:51,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:43:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:51,608 INFO L225 Difference]: With dead ends: 2593 [2021-02-21 19:43:51,608 INFO L226 Difference]: Without dead ends: 1572 [2021-02-21 19:43:51,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:43:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-02-21 19:43:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1449. [2021-02-21 19:43:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2021-02-21 19:43:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1709 transitions. [2021-02-21 19:43:52,547 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1709 transitions. Word has length 171 [2021-02-21 19:43:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:52,548 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 1709 transitions. [2021-02-21 19:43:52,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:43:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1709 transitions. [2021-02-21 19:43:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:43:52,556 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:52,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:43:52,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:43:52,557 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:52,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:52,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1115653263, now seen corresponding path program 1 times [2021-02-21 19:43:52,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:52,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219621136] [2021-02-21 19:43:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY