/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_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:10:52,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:10:52,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:10:52,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:10:52,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:10:52,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:10:52,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:10:52,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:10:52,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:10:52,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:10:52,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:10:52,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:10:52,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:10:52,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:10:52,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:10:52,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:10:52,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:10:52,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:10:52,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:10:52,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:10:52,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:10:52,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:10:52,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:10:52,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:10:52,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:10:52,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:10:52,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:10:52,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:10:52,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:10:52,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:10:52,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:10:52,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:10:52,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:10:52,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:10:52,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:10:52,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:10:52,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:10:52,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:10:52,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:10:52,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:10:52,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:10:52,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:10:52,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:10:52,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:10:52,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:10:52,988 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:10:52,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:10:52,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:10:52,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:10:52,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:10:52,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:10:52,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:10:52,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:10:52,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:10:52,990 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:10:52,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:10:52,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:10:52,992 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:10:52,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:10:52,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:10:52,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:10:52,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:10:52,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:10:52,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:10:52,993 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:10:53,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:10:53,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:10:53,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:10:53,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:10:53,437 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:10:53,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2021-02-23 16:10:53,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bdc65a1/29497671c83141169e564af7d4a11d82/FLAG347f80297 [2021-02-23 16:10:54,221 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:10:54,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2021-02-23 16:10:54,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bdc65a1/29497671c83141169e564af7d4a11d82/FLAG347f80297 [2021-02-23 16:10:54,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61bdc65a1/29497671c83141169e564af7d4a11d82 [2021-02-23 16:10:54,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:10:54,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:10:54,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:54,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:10:54,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:10:54,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bb6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54, skipping insertion in model container [2021-02-23 16:10:54,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:10:54,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:10:54,811 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_spec1_product56.cil.c[16355,16368] [2021-02-23 16:10:54,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:54,842 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:10:54,920 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_spec1_product56.cil.c[16355,16368] [2021-02-23 16:10:54,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:54,970 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:10:54,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54 WrapperNode [2021-02-23 16:10:54,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:54,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:10:54,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:10:54,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:10:54,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:55,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:55,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:55,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:55,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:55,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:55,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:10:55,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:10:55,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:10:55,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:10:55,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:10:55,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:10:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:10:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:10:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:10:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:10:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:10:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:10:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:10:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:10:55,211 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:10:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:10:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:10:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:10:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:10:55,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:10:55,213 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:10:55,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:10:55,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:10:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:10:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:10:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:10:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:10:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:10:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:10:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:10:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:10:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:10:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:10:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:10:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:10:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:10:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:10:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:10:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:10:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:10:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:10:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:10:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:10:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:10:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:10:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:10:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:10:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:10:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:10:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:10:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:10:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:10:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:10:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:10:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:10:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:10:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:10:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:10:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:10:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:10:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:10:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:10:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:10:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:10:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:10:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:10:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:10:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:10:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:10:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:10:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:10:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:10:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:10:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:10:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:10:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:10:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:10:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:10:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:10:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:10:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:10:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:10:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:10:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:10:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:10:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:10:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:10:56,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:10:56,444 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:10:56,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:56 BoogieIcfgContainer [2021-02-23 16:10:56,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:10:56,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:10:56,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:10:56,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:10:56,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:10:54" (1/3) ... [2021-02-23 16:10:56,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196d8859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:56, skipping insertion in model container [2021-02-23 16:10:56,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (2/3) ... [2021-02-23 16:10:56,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196d8859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:56, skipping insertion in model container [2021-02-23 16:10:56,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:56" (3/3) ... [2021-02-23 16:10:56,456 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2021-02-23 16:10:56,462 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:10:56,467 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:10:56,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:10:56,509 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:10:56,509 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:10:56,509 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:10:56,509 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:10:56,509 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:10:56,510 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:10:56,510 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:10:56,510 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:10:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2021-02-23 16:10:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:10:56,554 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:56,555 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 16:10:56,555 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:56,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:56,562 INFO L82 PathProgramCache]: Analyzing trace with hash -761542394, now seen corresponding path program 1 times [2021-02-23 16:10:56,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:56,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003181623] [2021-02-23 16:10:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:56,645 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,362 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:10:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:57,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003181623] [2021-02-23 16:10:57,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:57,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:10:57,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814309883] [2021-02-23 16:10:57,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:10:57,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:57,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:10:57,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:57,620 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 3 states. [2021-02-23 16:10:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:59,648 INFO L93 Difference]: Finished difference Result 560 states and 668 transitions. [2021-02-23 16:10:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:10:59,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:10:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:59,668 INFO L225 Difference]: With dead ends: 560 [2021-02-23 16:10:59,668 INFO L226 Difference]: Without dead ends: 342 [2021-02-23 16:10:59,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-02-23 16:10:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 296. [2021-02-23 16:10:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-23 16:10:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 325 transitions. [2021-02-23 16:10:59,850 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 325 transitions. Word has length 147 [2021-02-23 16:10:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:59,851 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 325 transitions. [2021-02-23 16:10:59,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:10:59,851 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 325 transitions. [2021-02-23 16:10:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:10:59,855 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:59,856 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 16:10:59,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:10:59,856 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:59,857 INFO L82 PathProgramCache]: Analyzing trace with hash -249455000, now seen corresponding path program 1 times [2021-02-23 16:10:59,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:59,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514544110] [2021-02-23 16:10:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:59,862 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:59,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,277 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:00,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:00,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:00,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:00,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:00,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:00,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:00,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:00,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:00,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:00,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:11:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:00,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:00,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:11:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:00,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:00,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:00,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514544110] [2021-02-23 16:11:00,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:00,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:11:00,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696000319] [2021-02-23 16:11:00,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:11:00,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:00,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:11:00,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:11:00,417 INFO L87 Difference]: Start difference. First operand 296 states and 325 transitions. Second operand 4 states. [2021-02-23 16:11:01,133 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:02,508 INFO L93 Difference]: Finished difference Result 466 states and 530 transitions. [2021-02-23 16:11:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:11:02,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:11:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:02,524 INFO L225 Difference]: With dead ends: 466 [2021-02-23 16:11:02,524 INFO L226 Difference]: Without dead ends: 325 [2021-02-23 16:11:02,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:11:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-02-23 16:11:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 286. [2021-02-23 16:11:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2021-02-23 16:11:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 312 transitions. [2021-02-23 16:11:02,655 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 312 transitions. Word has length 148 [2021-02-23 16:11:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:02,656 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 312 transitions. [2021-02-23 16:11:02,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:11:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 312 transitions. [2021-02-23 16:11:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:11:02,658 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:02,658 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 16:11:02,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:11:02,659 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1117022005, now seen corresponding path program 1 times [2021-02-23 16:11:02,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:02,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734884028] [2021-02-23 16:11:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:02,663 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:02,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:02,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:02,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:02,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:02,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:02,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:02,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:02,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:02,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:02,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:02,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:02,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,089 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:03,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:03,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:11:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:03,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:11:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:11:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:03,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:03,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:03,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734884028] [2021-02-23 16:11:03,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:03,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:11:03,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592426284] [2021-02-23 16:11:03,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:11:03,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:03,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:11:03,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:11:03,274 INFO L87 Difference]: Start difference. First operand 286 states and 312 transitions. Second operand 10 states. [2021-02-23 16:11:03,937 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:04,371 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:04,751 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:11:05,204 WARN L202 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:05,570 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:05,911 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:06,948 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:10,245 INFO L93 Difference]: Finished difference Result 787 states and 922 transitions. [2021-02-23 16:11:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:11:10,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:11:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:10,252 INFO L225 Difference]: With dead ends: 787 [2021-02-23 16:11:10,252 INFO L226 Difference]: Without dead ends: 616 [2021-02-23 16:11:10,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:11:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-02-23 16:11:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 517. [2021-02-23 16:11:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2021-02-23 16:11:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 583 transitions. [2021-02-23 16:11:10,470 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 583 transitions. Word has length 161 [2021-02-23 16:11:10,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:10,471 INFO L480 AbstractCegarLoop]: Abstraction has 517 states and 583 transitions. [2021-02-23 16:11:10,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:11:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 583 transitions. [2021-02-23 16:11:10,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:11:10,474 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:10,474 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 16:11:10,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:11:10,475 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:10,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:10,475 INFO L82 PathProgramCache]: Analyzing trace with hash 716668618, now seen corresponding path program 1 times [2021-02-23 16:11:10,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:10,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360511483] [2021-02-23 16:11:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:10,479 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:10,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:10,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:10,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:10,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:10,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:10,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,870 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:11:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:11:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:10,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:10,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:10,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:11,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:11,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:11:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:11,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:11,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:11,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360511483] [2021-02-23 16:11:11,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:11,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:11:11,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247108624] [2021-02-23 16:11:11,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:11:11,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:11,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:11:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:11:11,063 INFO L87 Difference]: Start difference. First operand 517 states and 583 transitions. Second operand 9 states. [2021-02-23 16:11:11,697 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:13,171 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:13,606 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:14,142 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:14,550 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:14,989 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:15,544 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:16,025 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:16,869 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:18,705 INFO L93 Difference]: Finished difference Result 1447 states and 1739 transitions. [2021-02-23 16:11:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:11:18,706 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-23 16:11:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:18,719 INFO L225 Difference]: With dead ends: 1447 [2021-02-23 16:11:18,719 INFO L226 Difference]: Without dead ends: 1045 [2021-02-23 16:11:18,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:11:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-02-23 16:11:19,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 880. [2021-02-23 16:11:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2021-02-23 16:11:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1007 transitions. [2021-02-23 16:11:19,297 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1007 transitions. Word has length 166 [2021-02-23 16:11:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:19,298 INFO L480 AbstractCegarLoop]: Abstraction has 880 states and 1007 transitions. [2021-02-23 16:11:19,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:11:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1007 transitions. [2021-02-23 16:11:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:11:19,303 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:19,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:19,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:11:19,304 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:19,305 INFO L82 PathProgramCache]: Analyzing trace with hash -795426880, now seen corresponding path program 1 times [2021-02-23 16:11:19,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:19,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535542270] [2021-02-23 16:11:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:19,309 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,786 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:19,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:11:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:11:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:11:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:19,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:19,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:19,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:19,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:20,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535542270] [2021-02-23 16:11:20,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:20,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:11:20,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402222169] [2021-02-23 16:11:20,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:11:20,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:20,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:11:20,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:11:20,004 INFO L87 Difference]: Start difference. First operand 880 states and 1007 transitions. Second operand 10 states. [2021-02-23 16:11:20,656 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:22,279 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:22,700 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:23,158 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:23,590 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:23,985 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:25,018 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:25,432 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:25,933 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:27,850 INFO L93 Difference]: Finished difference Result 2255 states and 2786 transitions. [2021-02-23 16:11:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:11:27,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-23 16:11:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:27,862 INFO L225 Difference]: With dead ends: 2255 [2021-02-23 16:11:27,862 INFO L226 Difference]: Without dead ends: 1490 [2021-02-23 16:11:27,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:11:27,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-02-23 16:11:28,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1222. [2021-02-23 16:11:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2021-02-23 16:11:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1414 transitions. [2021-02-23 16:11:28,643 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1414 transitions. Word has length 171 [2021-02-23 16:11:28,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:28,643 INFO L480 AbstractCegarLoop]: Abstraction has 1222 states and 1414 transitions. [2021-02-23 16:11:28,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:11:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1414 transitions. [2021-02-23 16:11:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-23 16:11:28,648 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:28,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:28,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:11:28,649 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:28,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:28,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1832190563, now seen corresponding path program 1 times [2021-02-23 16:11:28,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:28,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394413362] [2021-02-23 16:11:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:28,653 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:28,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:28,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:28,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:28,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:28,995 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:11:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:11:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:29,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:29,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:29,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:29,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:11:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:11:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:11:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-23 16:11:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:29,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:29,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:29,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394413362] [2021-02-23 16:11:29,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:29,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:11:29,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356824651] [2021-02-23 16:11:29,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:11:29,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:29,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:11:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:11:29,274 INFO L87 Difference]: Start difference. First operand 1222 states and 1414 transitions. Second operand 11 states. [2021-02-23 16:11:31,091 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:31,516 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:11:31,977 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:11:32,422 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:32,851 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:33,247 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:35,352 INFO L93 Difference]: Finished difference Result 2946 states and 3688 transitions. [2021-02-23 16:11:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:11:35,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2021-02-23 16:11:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:35,367 INFO L225 Difference]: With dead ends: 2946 [2021-02-23 16:11:35,368 INFO L226 Difference]: Without dead ends: 1839 [2021-02-23 16:11:35,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:11:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-02-23 16:11:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1260. [2021-02-23 16:11:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2021-02-23 16:11:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1454 transitions. [2021-02-23 16:11:35,927 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1454 transitions. Word has length 209 [2021-02-23 16:11:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:35,927 INFO L480 AbstractCegarLoop]: Abstraction has 1260 states and 1454 transitions. [2021-02-23 16:11:35,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:11:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1454 transitions. [2021-02-23 16:11:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-23 16:11:35,932 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:35,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:35,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:11:35,933 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:35,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2049145341, now seen corresponding path program 1 times [2021-02-23 16:11:35,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:35,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854505586] [2021-02-23 16:11:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:35,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:35,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:35,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:35,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:35,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:35,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:35,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:36,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,387 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:36,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:11:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:11:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:36,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:36,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:11:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:36,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:11:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:11:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-23 16:11:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:36,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:36,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:36,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854505586] [2021-02-23 16:11:36,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:36,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:11:36,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778975986] [2021-02-23 16:11:36,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:11:36,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:36,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:11:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:11:36,738 INFO L87 Difference]: Start difference. First operand 1260 states and 1454 transitions. Second operand 14 states. [2021-02-23 16:11:37,531 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:37,933 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:11:38,309 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:38,692 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:39,039 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:40,341 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:40,749 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:41,199 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:41,629 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:42,055 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:45,067 INFO L93 Difference]: Finished difference Result 3028 states and 3847 transitions. [2021-02-23 16:11:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 16:11:45,068 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 209 [2021-02-23 16:11:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:45,080 INFO L225 Difference]: With dead ends: 3028 [2021-02-23 16:11:45,081 INFO L226 Difference]: Without dead ends: 1883 [2021-02-23 16:11:45,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-23 16:11:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-02-23 16:11:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1284. [2021-02-23 16:11:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2021-02-23 16:11:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1478 transitions. [2021-02-23 16:11:45,703 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1478 transitions. Word has length 209 [2021-02-23 16:11:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:45,706 INFO L480 AbstractCegarLoop]: Abstraction has 1284 states and 1478 transitions. [2021-02-23 16:11:45,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:11:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1478 transitions. [2021-02-23 16:11:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-23 16:11:45,719 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:45,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:45,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:11:45,719 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:45,720 INFO L82 PathProgramCache]: Analyzing trace with hash -2118663450, now seen corresponding path program 1 times [2021-02-23 16:11:45,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:45,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996356991] [2021-02-23 16:11:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:45,724 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:45,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:45,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:45,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:45,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:45,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:45,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:45,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:45,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:45,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:45,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:11:45,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:45,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,133 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:11:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:11:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:11:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:46,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:46,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:11:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:11:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:11:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-23 16:11:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:46,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:46,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:46,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996356991] [2021-02-23 16:11:46,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:46,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:11:46,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786844313] [2021-02-23 16:11:46,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:11:46,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:46,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:11:46,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:11:46,376 INFO L87 Difference]: Start difference. First operand 1284 states and 1478 transitions. Second operand 8 states. [2021-02-23 16:11:46,998 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:47,752 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:53,327 INFO L93 Difference]: Finished difference Result 4598 states and 5888 transitions. [2021-02-23 16:11:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 16:11:53,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2021-02-23 16:11:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:53,349 INFO L225 Difference]: With dead ends: 4598 [2021-02-23 16:11:53,349 INFO L226 Difference]: Without dead ends: 3429 [2021-02-23 16:11:53,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-02-23 16:11:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2021-02-23 16:11:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2504. [2021-02-23 16:11:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2504 states. [2021-02-23 16:11:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 2910 transitions. [2021-02-23 16:11:54,643 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 2910 transitions. Word has length 209 [2021-02-23 16:11:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:54,644 INFO L480 AbstractCegarLoop]: Abstraction has 2504 states and 2910 transitions. [2021-02-23 16:11:54,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:11:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 2910 transitions. [2021-02-23 16:11:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 16:11:54,650 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:54,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:54,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:11:54,650 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:54,651 INFO L82 PathProgramCache]: Analyzing trace with hash 142007820, now seen corresponding path program 1 times [2021-02-23 16:11:54,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:54,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710613328] [2021-02-23 16:11:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:54,654 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:54,713 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:54,770 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:55,030 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:11:55,030 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:11:55,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:11:55,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:11:55 BoogieIcfgContainer [2021-02-23 16:11:55,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:11:55,055 INFO L168 Benchmark]: Toolchain (without parser) took 60591.74 ms. Allocated memory was 155.2 MB in the beginning and 973.1 MB in the end (delta: 817.9 MB). Free memory was 131.2 MB in the beginning and 746.2 MB in the end (delta: -615.0 MB). Peak memory consumption was 203.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:55,055 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 129.6 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:11:55,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.61 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 108.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:55,056 INFO L168 Benchmark]: Boogie Preprocessor took 144.26 ms. Allocated memory is still 155.2 MB. Free memory was 108.2 MB in the beginning and 135.8 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:55,056 INFO L168 Benchmark]: RCFGBuilder took 1329.74 ms. Allocated memory is still 155.2 MB. Free memory was 135.8 MB in the beginning and 84.6 MB in the end (delta: 51.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:55,056 INFO L168 Benchmark]: TraceAbstraction took 58605.67 ms. Allocated memory was 155.2 MB in the beginning and 973.1 MB in the end (delta: 817.9 MB). Free memory was 84.1 MB in the beginning and 746.2 MB in the end (delta: -662.2 MB). Peak memory consumption was 155.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:55,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 129.6 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 493.61 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 108.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 144.26 ms. Allocated memory is still 155.2 MB. Free memory was 108.2 MB in the beginning and 135.8 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1329.74 ms. Allocated memory is still 155.2 MB. Free memory was 135.8 MB in the beginning and 84.6 MB in the end (delta: 51.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 58605.67 ms. Allocated memory was 155.2 MB in the beginning and 973.1 MB in the end (delta: 817.9 MB). Free memory was 84.1 MB in the beginning and 746.2 MB in the end (delta: -662.2 MB). Peak memory consumption was 155.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 808]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int pumpRunning = 0; [L493] int systemActive = 1; [L813] int cleanupTimeShifts = 4; [L910] int waterLevel = 1; [L911] int methaneLevelCritical = 0; [L886] int retValue_acc ; [L887] int tmp ; [L891] FCALL select_helpers() [L892] FCALL select_features() [L893] CALL, EXPR valid_product() [L768] int retValue_acc ; [L771] retValue_acc = 1 [L772] return (retValue_acc); [L893] RET, EXPR valid_product() [L893] tmp = valid_product() [L895] COND TRUE \read(tmp) [L897] FCALL setup() [L898] CALL runTest() [L880] CALL test() [L415] int splverifierCounter ; [L416] int tmp ; [L417] int tmp___0 ; [L418] int tmp___1 ; [L419] int tmp___2 ; [L422] splverifierCounter = 0 [L424] COND TRUE 1 [L426] COND TRUE splverifierCounter < 4 [L432] tmp = __VERIFIER_nondet_int() [L434] COND TRUE \read(tmp) [L436] CALL waterRise() [L928] COND TRUE waterLevel < 2 [L929] waterLevel = waterLevel + 1 [L436] RET waterRise() [L442] tmp___0 = __VERIFIER_nondet_int() [L444] COND TRUE \read(tmp___0) [L446] CALL changeMethaneLevel() [L940] COND FALSE !(\read(methaneLevelCritical)) [L943] methaneLevelCritical = 1 [L446] RET changeMethaneLevel() [L452] tmp___2 = __VERIFIER_nondet_int() [L454] COND TRUE \read(tmp___2) [L456] CALL startSystem() [L734] systemActive = 1 [L456] RET startSystem() [L471] CALL timeShift() [L500] COND FALSE !(\read(pumpRunning)) [L507] COND TRUE \read(systemActive) [L509] CALL processEnvironment() [L581] int tmp ; [L584] COND FALSE !(\read(pumpRunning)) [L599] CALL processEnvironment__wrappee__lowWaterSensor() [L555] int tmp ; [L558] COND FALSE !(\read(pumpRunning)) [L573] CALL processEnvironment__wrappee__highWaterSensor() [L529] int tmp ; [L532] COND TRUE ! pumpRunning [L534] CALL, EXPR isHighWaterLevel() [L678] int retValue_acc ; [L679] int tmp ; [L680] int tmp___0 ; [L684] CALL, EXPR isHighWaterSensorDry() [L990] int retValue_acc ; [L993] COND FALSE !(waterLevel < 2) [L997] retValue_acc = 0 [L998] return (retValue_acc); [L684] RET, EXPR isHighWaterSensorDry() [L684] tmp = isHighWaterSensorDry() [L686] COND FALSE !(\read(tmp)) [L689] tmp___0 = 1 [L691] retValue_acc = tmp___0 [L692] return (retValue_acc); [L534] RET, EXPR isHighWaterLevel() [L534] tmp = isHighWaterLevel() [L536] COND TRUE \read(tmp) [L538] CALL activatePump() [L609] pumpRunning = 1 [L538] RET activatePump() [L573] RET processEnvironment__wrappee__highWaterSensor() [L599] RET processEnvironment__wrappee__lowWaterSensor() [L509] RET processEnvironment() [L515] CALL __utac_acc__Specification1_spec__1() [L779] int tmp ; [L780] int tmp___0 ; [L784] CALL, EXPR isMethaneLevelCritical() [L949] int retValue_acc ; [L952] retValue_acc = methaneLevelCritical [L953] return (retValue_acc); [L784] RET, EXPR isMethaneLevelCritical() [L784] tmp = isMethaneLevelCritical() [L786] COND TRUE \read(tmp) [L788] CALL, EXPR isPumpRunning() [L633] int retValue_acc ; [L636] retValue_acc = pumpRunning [L637] return (retValue_acc); [L788] RET, EXPR isPumpRunning() [L788] tmp___0 = isPumpRunning() [L790] COND TRUE \read(tmp___0) [L792] CALL __automaton_fail() [L808] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 668 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 58.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 48.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2286 SDtfs, 5091 SDslu, 4465 SDs, 0 SdLazy, 10209 SolverSat, 1770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2504occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 2720 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...