/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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:10:54,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:10:54,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:10:54,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:10:54,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:10:54,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:10:54,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:10:54,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:10:54,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:10:54,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:10:54,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:10:54,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:10:54,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:10:54,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:10:54,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:10:54,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:10:54,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:10:54,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:10:54,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:10:54,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:10:54,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:10:54,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:10:54,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:10:54,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:10:54,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:10:54,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:10:54,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:10:54,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:10:54,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:10:54,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:10:54,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:10:54,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:10:54,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:10:54,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:10:54,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:10:54,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:10:54,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:10:54,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:10:54,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:10:54,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:10:54,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:10:54,933 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 17:10:54,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:10:54,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:10:54,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:10:54,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:10:54,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:10:54,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:10:54,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:10:54,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:10:54,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:10:54,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:10:54,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:10:54,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:10:54,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:10:54,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:10:54,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:10:54,976 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:10:54,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:10:54,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:10:54,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:10:54,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:10:54,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:10:54,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:10:54,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:10:55,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:10:55,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:10:55,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:10:55,529 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:10:55,530 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:10:55,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2021-02-23 17:10:55,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025ad8508/1f4d1adff4ff40cc87061f8b34b7b435/FLAG94092431b [2021-02-23 17:10:56,467 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:10:56,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2021-02-23 17:10:56,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025ad8508/1f4d1adff4ff40cc87061f8b34b7b435/FLAG94092431b [2021-02-23 17:10:56,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025ad8508/1f4d1adff4ff40cc87061f8b34b7b435 [2021-02-23 17:10:56,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:10:56,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:10:56,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:10:56,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:10:56,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:10:56,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:10:56" (1/1) ... [2021-02-23 17:10:56,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e97a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:56, skipping insertion in model container [2021-02-23 17:10:56,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:10:56" (1/1) ... [2021-02-23 17:10:56,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:10:56,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:10:57,243 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_product52.cil.c[18107,18120] [2021-02-23 17:10:57,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:10:57,274 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:10:57,444 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_product52.cil.c[18107,18120] [2021-02-23 17:10:57,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:10:57,502 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:10:57,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57 WrapperNode [2021-02-23 17:10:57,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:10:57,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:10:57,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:10:57,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:10:57,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (1/1) ... [2021-02-23 17:10:57,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (1/1) ... [2021-02-23 17:10:57,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (1/1) ... [2021-02-23 17:10:57,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (1/1) ... [2021-02-23 17:10:57,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (1/1) ... [2021-02-23 17:10:57,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (1/1) ... [2021-02-23 17:10:57,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (1/1) ... [2021-02-23 17:10:57,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:10:57,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:10:57,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:10:57,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:10:57,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (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 17:10:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:10:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:10:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 17:10:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:10:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 17:10:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 17:10:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 17:10:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 17:10:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 17:10:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 17:10:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 17:10:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 17:10:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 17:10:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 17:10:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 17:10:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 17:10:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 17:10:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 17:10:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 17:10:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 17:10:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 17:10:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 17:10:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 17:10:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 17:10:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 17:10:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 17:10:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 17:10:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 17:10:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 17:10:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 17:10:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 17:10:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 17:10:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 17:10:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 17:10:57,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 17:10:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 17:10:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:10:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 17:10:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 17:10:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 17:10:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 17:10:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 17:10:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:10:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:10:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:10:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:10:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:10:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:10:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 17:10:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 17:10:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 17:10:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 17:10:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 17:10:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 17:10:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 17:10:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 17:10:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 17:10:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 17:10:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 17:10:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 17:10:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 17:10:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 17:10:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 17:10:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 17:10:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:10:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 17:10:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 17:10:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 17:10:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 17:10:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 17:10:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 17:10:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 17:10:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 17:10:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 17:10:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 17:10:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 17:10:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 17:10:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 17:10:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:10:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 17:10:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 17:10:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:10:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 17:10:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 17:10:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:10:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 17:10:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 17:10:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 17:10:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 17:10:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 17:10:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 17:10:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 17:10:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 17:10:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 17:10:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:10:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 17:10:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 17:10:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:10:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:10:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:10:59,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:10:59,682 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 17:10:59,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:10:59 BoogieIcfgContainer [2021-02-23 17:10:59,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:10:59,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:10:59,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:10:59,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:10:59,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:10:56" (1/3) ... [2021-02-23 17:10:59,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69364e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:10:59, skipping insertion in model container [2021-02-23 17:10:59,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:10:57" (2/3) ... [2021-02-23 17:10:59,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69364e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:10:59, skipping insertion in model container [2021-02-23 17:10:59,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:10:59" (3/3) ... [2021-02-23 17:10:59,702 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2021-02-23 17:10:59,713 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:10:59,722 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:10:59,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:10:59,827 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:10:59,827 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:10:59,827 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:10:59,827 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:10:59,828 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:10:59,828 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:10:59,828 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:10:59,828 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:10:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2021-02-23 17:10:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 17:10:59,950 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:10:59,952 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] [2021-02-23 17:10:59,953 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:10:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:10:59,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1591078587, now seen corresponding path program 1 times [2021-02-23 17:10:59,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:10:59,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488660630] [2021-02-23 17:10:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:00,119 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:00,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:00,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:00,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:00,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,177 WARN L202 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:01,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:01,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:01,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:01,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:01,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:01,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:01,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:01,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:01,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:01,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:01,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 17:11:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:01,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:01,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:11:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:01,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:01,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:01,391 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 17:11:01,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488660630] [2021-02-23 17:11:01,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:01,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 17:11:01,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131838725] [2021-02-23 17:11:01,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 17:11:01,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:01,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 17:11:01,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:11:01,436 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2021-02-23 17:11:03,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:11:03,665 INFO L93 Difference]: Finished difference Result 518 states and 615 transitions. [2021-02-23 17:11:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 17:11:03,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 17:11:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:11:03,685 INFO L225 Difference]: With dead ends: 518 [2021-02-23 17:11:03,686 INFO L226 Difference]: Without dead ends: 320 [2021-02-23 17:11:03,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:11:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-23 17:11:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 276. [2021-02-23 17:11:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2021-02-23 17:11:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 300 transitions. [2021-02-23 17:11:03,949 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 300 transitions. Word has length 147 [2021-02-23 17:11:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:11:03,951 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 300 transitions. [2021-02-23 17:11:03,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 17:11:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 300 transitions. [2021-02-23 17:11:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 17:11:03,955 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:03,956 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] [2021-02-23 17:11:03,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:11:03,956 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:03,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:03,958 INFO L82 PathProgramCache]: Analyzing trace with hash -62814594, now seen corresponding path program 1 times [2021-02-23 17:11:03,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:03,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253356239] [2021-02-23 17:11:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:03,964 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:04,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,483 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 17:11:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:11:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:04,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:04,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:04,680 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 17:11:04,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253356239] [2021-02-23 17:11:04,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:04,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:11:04,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552822712] [2021-02-23 17:11:04,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:11:04,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:04,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:11:04,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:11:04,685 INFO L87 Difference]: Start difference. First operand 276 states and 300 transitions. Second operand 4 states. [2021-02-23 17:11:05,556 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:11:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:11:06,902 INFO L93 Difference]: Finished difference Result 424 states and 477 transitions. [2021-02-23 17:11:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:11:06,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 17:11:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:11:06,908 INFO L225 Difference]: With dead ends: 424 [2021-02-23 17:11:06,909 INFO L226 Difference]: Without dead ends: 303 [2021-02-23 17:11:06,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:11:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-23 17:11:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 266. [2021-02-23 17:11:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-23 17:11:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 287 transitions. [2021-02-23 17:11:07,025 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 287 transitions. Word has length 148 [2021-02-23 17:11:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:11:07,026 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 287 transitions. [2021-02-23 17:11:07,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:11:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 287 transitions. [2021-02-23 17:11:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 17:11:07,029 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:07,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:11:07,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:11:07,029 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1126937246, now seen corresponding path program 1 times [2021-02-23 17:11:07,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:07,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853545577] [2021-02-23 17:11:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:07,036 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:07,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:07,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:07,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,753 WARN L202 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:07,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:11:07,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:11:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 17:11:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 17:11:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 17:11:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:07,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:07,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:08,005 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 17:11:08,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853545577] [2021-02-23 17:11:08,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:08,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:11:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945164253] [2021-02-23 17:11:08,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:11:08,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:11:08,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:11:08,015 INFO L87 Difference]: Start difference. First operand 266 states and 287 transitions. Second operand 10 states. [2021-02-23 17:11:08,734 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:11:09,235 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:11:09,672 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 17:11:10,090 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:10,500 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:10,893 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:12,117 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:11:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:11:15,133 INFO L93 Difference]: Finished difference Result 723 states and 841 transitions. [2021-02-23 17:11:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:11:15,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 17:11:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:11:15,141 INFO L225 Difference]: With dead ends: 723 [2021-02-23 17:11:15,142 INFO L226 Difference]: Without dead ends: 572 [2021-02-23 17:11:15,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:11:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-02-23 17:11:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 477. [2021-02-23 17:11:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2021-02-23 17:11:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 533 transitions. [2021-02-23 17:11:15,409 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 533 transitions. Word has length 161 [2021-02-23 17:11:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:11:15,411 INFO L480 AbstractCegarLoop]: Abstraction has 477 states and 533 transitions. [2021-02-23 17:11:15,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:11:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 533 transitions. [2021-02-23 17:11:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 17:11:15,415 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:15,415 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] [2021-02-23 17:11:15,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:11:15,416 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:15,417 INFO L82 PathProgramCache]: Analyzing trace with hash -656084487, now seen corresponding path program 1 times [2021-02-23 17:11:15,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:15,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479240730] [2021-02-23 17:11:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:15,421 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:15,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:15,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:15,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:15,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:15,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:15,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:15,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:15,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:15,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:15,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:15,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:15,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:15,938 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:15,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:11:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:16,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:16,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:16,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:11:16,060 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:11:16,061 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:11:16,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:16,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:11:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:16,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 17:11:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:16,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:16,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 17:11:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:16,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:16,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:16,245 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 17:11:16,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479240730] [2021-02-23 17:11:16,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:16,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:11:16,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981038783] [2021-02-23 17:11:16,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:11:16,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:16,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:11:16,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:11:16,250 INFO L87 Difference]: Start difference. First operand 477 states and 533 transitions. Second operand 14 states. [2021-02-23 17:11:17,012 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:11:17,527 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:11:17,940 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:11:18,319 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:18,709 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:19,081 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:19,971 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:11:21,302 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:21,737 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:22,362 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:22,834 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:11:23,253 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:11:23,651 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:11:24,056 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:11:24,496 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:24,877 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:25,468 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:25,996 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:11:26,478 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:26,989 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:29,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:11:29,511 INFO L93 Difference]: Finished difference Result 1649 states and 2064 transitions. [2021-02-23 17:11:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:11:29,512 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 17:11:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:11:29,529 INFO L225 Difference]: With dead ends: 1649 [2021-02-23 17:11:29,529 INFO L226 Difference]: Without dead ends: 1287 [2021-02-23 17:11:29,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:11:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-02-23 17:11:30,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1148. [2021-02-23 17:11:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2021-02-23 17:11:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1354 transitions. [2021-02-23 17:11:30,157 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1354 transitions. Word has length 166 [2021-02-23 17:11:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:11:30,158 INFO L480 AbstractCegarLoop]: Abstraction has 1148 states and 1354 transitions. [2021-02-23 17:11:30,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:11:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1354 transitions. [2021-02-23 17:11:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 17:11:30,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:30,165 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 17:11:30,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:11:30,166 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash 380205404, now seen corresponding path program 1 times [2021-02-23 17:11:30,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:30,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563344635] [2021-02-23 17:11:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:30,171 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,576 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:11:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 17:11:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 17:11:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 17:11:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:30,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:30,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:30,750 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 17:11:30,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563344635] [2021-02-23 17:11:30,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:30,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:11:30,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502637908] [2021-02-23 17:11:30,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:11:30,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:30,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:11:30,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:11:30,754 INFO L87 Difference]: Start difference. First operand 1148 states and 1354 transitions. Second operand 6 states. [2021-02-23 17:11:31,401 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:11:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:11:34,920 INFO L93 Difference]: Finished difference Result 2633 states and 3295 transitions. [2021-02-23 17:11:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:11:34,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 17:11:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:11:34,933 INFO L225 Difference]: With dead ends: 2633 [2021-02-23 17:11:34,933 INFO L226 Difference]: Without dead ends: 1600 [2021-02-23 17:11:34,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:11:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-02-23 17:11:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1473. [2021-02-23 17:11:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2021-02-23 17:11:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1733 transitions. [2021-02-23 17:11:35,581 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1733 transitions. Word has length 171 [2021-02-23 17:11:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:11:35,582 INFO L480 AbstractCegarLoop]: Abstraction has 1473 states and 1733 transitions. [2021-02-23 17:11:35,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:11:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1733 transitions. [2021-02-23 17:11:35,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 17:11:35,588 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:35,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:11:35,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:11:35,590 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:35,590 INFO L82 PathProgramCache]: Analyzing trace with hash 223386127, now seen corresponding path program 1 times [2021-02-23 17:11:35,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:35,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290860476] [2021-02-23 17:11:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:36,297 WARN L202 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2021-02-23 17:11:36,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:36,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291