/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 00:43:44,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 00:43:44,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 00:43:44,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 00:43:44,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 00:43:44,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 00:43:44,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 00:43:44,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 00:43:44,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 00:43:44,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 00:43:44,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 00:43:44,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 00:43:44,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 00:43:44,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 00:43:44,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 00:43:44,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 00:43:44,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 00:43:44,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 00:43:44,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 00:43:44,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 00:43:44,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 00:43:44,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 00:43:44,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 00:43:44,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 00:43:44,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 00:43:44,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 00:43:44,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 00:43:44,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 00:43:44,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 00:43:44,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 00:43:44,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 00:43:44,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 00:43:44,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 00:43:44,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 00:43:44,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 00:43:44,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 00:43:44,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 00:43:44,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 00:43:44,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 00:43:44,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 00:43:44,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 00:43:44,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 00:43:44,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 00:43:44,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 00:43:44,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 00:43:44,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 00:43:44,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 00:43:44,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 00:43:44,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 00:43:44,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 00:43:44,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 00:43:44,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 00:43:44,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 00:43:44,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 00:43:44,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 00:43:44,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 00:43:44,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 00:43:44,437 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 00:43:44,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 00:43:44,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 00:43:44,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:43:44,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 00:43:44,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 00:43:44,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 00:43:44,438 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 00:43:44,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 00:43:44,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 00:43:44,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 00:43:44,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 00:43:44,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 00:43:44,871 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 00:43:44,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2021-02-22 00:43:44,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35833e695/98b24e72a6dd4fa4b15bf7b1b475c992/FLAGcab2cc3c3 [2021-02-22 00:43:45,650 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 00:43:45,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2021-02-22 00:43:45,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35833e695/98b24e72a6dd4fa4b15bf7b1b475c992/FLAGcab2cc3c3 [2021-02-22 00:43:45,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35833e695/98b24e72a6dd4fa4b15bf7b1b475c992 [2021-02-22 00:43:45,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 00:43:45,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 00:43:45,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 00:43:45,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 00:43:45,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 00:43:45,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:43:45" (1/1) ... [2021-02-22 00:43:45,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf7923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:45, skipping insertion in model container [2021-02-22 00:43:45,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:43:45" (1/1) ... [2021-02-22 00:43:45,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 00:43:46,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 00:43:46,396 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_product38.cil.c[16515,16528] [2021-02-22 00:43:46,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:43:46,445 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 00:43:46,596 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_product38.cil.c[16515,16528] [2021-02-22 00:43:46,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:43:46,663 INFO L208 MainTranslator]: Completed translation [2021-02-22 00:43:46,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46 WrapperNode [2021-02-22 00:43:46,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 00:43:46,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 00:43:46,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 00:43:46,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 00:43:46,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (1/1) ... [2021-02-22 00:43:46,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (1/1) ... [2021-02-22 00:43:46,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (1/1) ... [2021-02-22 00:43:46,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (1/1) ... [2021-02-22 00:43:46,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (1/1) ... [2021-02-22 00:43:46,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (1/1) ... [2021-02-22 00:43:46,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (1/1) ... [2021-02-22 00:43:46,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 00:43:46,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 00:43:46,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 00:43:46,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 00:43:46,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (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 [2021-02-22 00:43:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 00:43:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 00:43:46,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 00:43:46,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 00:43:46,983 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 00:43:46,983 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 00:43:46,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 00:43:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 00:43:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 00:43:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 00:43:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 00:43:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 00:43:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 00:43:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:43:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 00:43:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 00:43:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 00:43:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 00:43:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 00:43:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 00:43:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 00:43:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 00:43:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 00:43:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 00:43:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 00:43:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 00:43:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 00:43:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 00:43:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 00:43:46,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 00:43:46,988 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 00:43:46,988 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 00:43:46,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 00:43:46,988 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 00:43:46,989 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 00:43:46,989 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 00:43:46,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 00:43:46,989 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 00:43:46,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 00:43:46,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 00:43:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 00:43:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 00:43:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 00:43:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 00:43:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 00:43:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 00:43:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 00:43:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 00:43:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 00:43:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 00:43:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 00:43:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 00:43:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 00:43:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 00:43:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 00:43:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 00:43:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 00:43:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 00:43:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 00:43:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 00:43:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 00:43:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 00:43:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 00:43:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:43:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 00:43:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 00:43:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 00:43:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 00:43:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 00:43:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 00:43:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 00:43:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 00:43:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 00:43:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 00:43:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 00:43:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 00:43:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 00:43:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 00:43:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 00:43:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 00:43:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 00:43:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 00:43:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 00:43:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 00:43:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 00:43:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 00:43:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 00:43:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 00:43:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 00:43:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 00:43:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 00:43:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 00:43:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 00:43:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 00:43:48,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 00:43:48,470 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 00:43:48,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:43:48 BoogieIcfgContainer [2021-02-22 00:43:48,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 00:43:48,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 00:43:48,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 00:43:48,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 00:43:48,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 12:43:45" (1/3) ... [2021-02-22 00:43:48,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef7996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:43:48, skipping insertion in model container [2021-02-22 00:43:48,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:46" (2/3) ... [2021-02-22 00:43:48,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef7996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:43:48, skipping insertion in model container [2021-02-22 00:43:48,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:43:48" (3/3) ... [2021-02-22 00:43:48,482 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2021-02-22 00:43:48,489 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 00:43:48,494 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 00:43:48,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 00:43:48,537 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 00:43:48,538 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 00:43:48,538 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 00:43:48,538 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 00:43:48,538 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 00:43:48,538 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 00:43:48,538 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 00:43:48,538 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 00:43:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2021-02-22 00:43:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-22 00:43:48,580 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:48,581 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] [2021-02-22 00:43:48,582 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:48,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1817269989, now seen corresponding path program 1 times [2021-02-22 00:43:48,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:48,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880294938] [2021-02-22 00:43:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:48,676 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,697 WARN L202 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:49,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:43:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 00:43:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:49,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:49,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:49,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880294938] [2021-02-22 00:43:49,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:49,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 00:43:49,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914192916] [2021-02-22 00:43:50,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 00:43:50,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 00:43:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:43:50,022 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2021-02-22 00:43:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:52,551 INFO L93 Difference]: Finished difference Result 482 states and 574 transitions. [2021-02-22 00:43:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 00:43:52,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-22 00:43:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:52,570 INFO L225 Difference]: With dead ends: 482 [2021-02-22 00:43:52,570 INFO L226 Difference]: Without dead ends: 301 [2021-02-22 00:43:52,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:43:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-02-22 00:43:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259. [2021-02-22 00:43:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-22 00:43:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 281 transitions. [2021-02-22 00:43:52,763 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 281 transitions. Word has length 147 [2021-02-22 00:43:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:52,766 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 281 transitions. [2021-02-22 00:43:52,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 00:43:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 281 transitions. [2021-02-22 00:43:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-22 00:43:52,782 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:52,783 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] [2021-02-22 00:43:52,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 00:43:52,784 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash 167821607, now seen corresponding path program 1 times [2021-02-22 00:43:52,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:52,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513385897] [2021-02-22 00:43:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:52,793 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:52,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:52,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:52,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:52,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:52,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:52,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,610 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:53,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:53,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:53,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:53,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:53,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:53,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:53,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:53,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:53,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:53,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 00:43:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:53,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:53,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:43:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:53,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:53,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:53,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513385897] [2021-02-22 00:43:53,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:53,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 00:43:53,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577581446] [2021-02-22 00:43:53,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 00:43:53,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 00:43:53,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 00:43:53,710 INFO L87 Difference]: Start difference. First operand 259 states and 281 transitions. Second operand 4 states. [2021-02-22 00:43:54,886 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:56,568 INFO L93 Difference]: Finished difference Result 394 states and 444 transitions. [2021-02-22 00:43:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 00:43:56,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-22 00:43:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:56,575 INFO L225 Difference]: With dead ends: 394 [2021-02-22 00:43:56,575 INFO L226 Difference]: Without dead ends: 284 [2021-02-22 00:43:56,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 00:43:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-22 00:43:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2021-02-22 00:43:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-02-22 00:43:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2021-02-22 00:43:56,676 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 148 [2021-02-22 00:43:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:56,676 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2021-02-22 00:43:56,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 00:43:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2021-02-22 00:43:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-22 00:43:56,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:56,679 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] [2021-02-22 00:43:56,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 00:43:56,680 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:56,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1076170049, now seen corresponding path program 1 times [2021-02-22 00:43:56,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:56,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159351438] [2021-02-22 00:43:56,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:56,684 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:56,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:56,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:56,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:56,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:56,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:56,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:56,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:56,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:56,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:56,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:43:56,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:56,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,445 WARN L202 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:57,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:57,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:43:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 00:43:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 00:43:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:57,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:57,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:57,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159351438] [2021-02-22 00:43:57,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:57,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:43:57,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033161956] [2021-02-22 00:43:57,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:43:57,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:57,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:43:57,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:43:57,645 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand 10 states. [2021-02-22 00:43:58,707 WARN L202 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:59,545 WARN L202 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:00,289 WARN L202 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:44:01,019 WARN L202 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:01,726 WARN L202 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:02,437 WARN L202 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:05,187 INFO L93 Difference]: Finished difference Result 440 states and 506 transitions. [2021-02-22 00:44:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 00:44:05,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-22 00:44:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:05,193 INFO L225 Difference]: With dead ends: 440 [2021-02-22 00:44:05,193 INFO L226 Difference]: Without dead ends: 306 [2021-02-22 00:44:05,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-22 00:44:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-22 00:44:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2021-02-22 00:44:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-02-22 00:44:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2021-02-22 00:44:05,293 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 161 [2021-02-22 00:44:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:05,294 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2021-02-22 00:44:05,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:44:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2021-02-22 00:44:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-22 00:44:05,297 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:05,297 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] [2021-02-22 00:44:05,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 00:44:05,298 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:05,298 INFO L82 PathProgramCache]: Analyzing trace with hash 559922479, now seen corresponding path program 1 times [2021-02-22 00:44:05,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205505060] [2021-02-22 00:44:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:05,302 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:05,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:05,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:05,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:05,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:05,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:05,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:05,943 WARN L202 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:05,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:05,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:05,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:06,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:44:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:44:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:06,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:06,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:44:06,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-22 00:44:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-22 00:44:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:06,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:06,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:06,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205505060] [2021-02-22 00:44:06,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:06,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 00:44:06,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563441315] [2021-02-22 00:44:06,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 00:44:06,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:06,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 00:44:06,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 00:44:06,143 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 7 states. [2021-02-22 00:44:07,169 WARN L202 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:10,284 WARN L202 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:12,242 INFO L93 Difference]: Finished difference Result 620 states and 736 transitions. [2021-02-22 00:44:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 00:44:12,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-22 00:44:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:12,249 INFO L225 Difference]: With dead ends: 620 [2021-02-22 00:44:12,249 INFO L226 Difference]: Without dead ends: 486 [2021-02-22 00:44:12,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-22 00:44:12,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-02-22 00:44:12,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 359. [2021-02-22 00:44:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2021-02-22 00:44:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 386 transitions. [2021-02-22 00:44:12,425 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 386 transitions. Word has length 174 [2021-02-22 00:44:12,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:12,425 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 386 transitions. [2021-02-22 00:44:12,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 00:44:12,426 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 386 transitions. [2021-02-22 00:44:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-22 00:44:12,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:12,429 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] [2021-02-22 00:44:12,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 00:44:12,429 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:12,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:12,430 INFO L82 PathProgramCache]: Analyzing trace with hash -113254638, now seen corresponding path program 1 times [2021-02-22 00:44:12,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:12,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568851542] [2021-02-22 00:44:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:12,434 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:12,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:12,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:12,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:12,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:12,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:12,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:12,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:12,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:12,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:12,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:12,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:12,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:12,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:12,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,226 WARN L202 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:13,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:44:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:44:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-22 00:44:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:13,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-22 00:44:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:13,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:13,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:13,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568851542] [2021-02-22 00:44:13,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:13,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:44:13,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738427574] [2021-02-22 00:44:13,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:44:13,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:13,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:44:13,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:44:13,464 INFO L87 Difference]: Start difference. First operand 359 states and 386 transitions. Second operand 10 states. [2021-02-22 00:44:14,539 WARN L202 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:17,580 WARN L202 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:18,396 WARN L202 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:19,187 WARN L202 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:19,957 WARN L202 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:20,657 WARN L202 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:21,347 WARN L202 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:22,021 WARN L202 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:23,056 WARN L202 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:26,180 INFO L93 Difference]: Finished difference Result 1036 states and 1255 transitions. [2021-02-22 00:44:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 00:44:26,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2021-02-22 00:44:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:26,188 INFO L225 Difference]: With dead ends: 1036 [2021-02-22 00:44:26,188 INFO L226 Difference]: Without dead ends: 792 [2021-02-22 00:44:26,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-22 00:44:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-02-22 00:44:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 566. [2021-02-22 00:44:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-02-22 00:44:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 615 transitions. [2021-02-22 00:44:26,460 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 615 transitions. Word has length 198 [2021-02-22 00:44:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:26,460 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 615 transitions. [2021-02-22 00:44:26,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:44:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 615 transitions. [2021-02-22 00:44:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-22 00:44:26,464 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:26,464 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] [2021-02-22 00:44:26,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 00:44:26,465 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:26,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1063634956, now seen corresponding path program 1 times [2021-02-22 00:44:26,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:26,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899869926] [2021-02-22 00:44:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:26,468 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:26,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:26,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:26,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,195 WARN L202 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:27,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:27,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-22 00:44:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-22 00:44:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:27,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:27,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:27,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:27,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:27,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899869926] [2021-02-22 00:44:27,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:27,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:44:27,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621554807] [2021-02-22 00:44:27,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:44:27,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:27,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:44:27,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:44:27,506 INFO L87 Difference]: Start difference. First operand 566 states and 615 transitions. Second operand 11 states. [2021-02-22 00:44:28,644 WARN L202 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:31,662 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:32,345 WARN L202 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:33,109 WARN L202 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:33,832 WARN L202 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:34,625 WARN L202 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:35,426 WARN L202 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:36,170 WARN L202 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:36,940 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:39,061 INFO L93 Difference]: Finished difference Result 927 states and 1149 transitions. [2021-02-22 00:44:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 00:44:39,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2021-02-22 00:44:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:39,069 INFO L225 Difference]: With dead ends: 927 [2021-02-22 00:44:39,070 INFO L226 Difference]: Without dead ends: 924 [2021-02-22 00:44:39,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-02-22 00:44:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-02-22 00:44:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 566. [2021-02-22 00:44:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-02-22 00:44:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 614 transitions. [2021-02-22 00:44:39,344 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 614 transitions. Word has length 203 [2021-02-22 00:44:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:39,344 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 614 transitions. [2021-02-22 00:44:39,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:44:39,345 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 614 transitions. [2021-02-22 00:44:39,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-22 00:44:39,348 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:39,348 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] [2021-02-22 00:44:39,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 00:44:39,348 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:39,349 INFO L82 PathProgramCache]: Analyzing trace with hash -528011097, now seen corresponding path program 1 times [2021-02-22 00:44:39,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:39,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245736913] [2021-02-22 00:44:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:39,352 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:39,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:39,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:39,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:39,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,036 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:40,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:40,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:40,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:40,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-22 00:44:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-22 00:44:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:40,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:40,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:40,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245736913] [2021-02-22 00:44:40,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:40,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:44:40,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543384588] [2021-02-22 00:44:40,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:44:40,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:40,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:44:40,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:44:40,327 INFO L87 Difference]: Start difference. First operand 566 states and 614 transitions. Second operand 11 states. [2021-02-22 00:44:42,648 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:43,394 WARN L202 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:44:44,178 WARN L202 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-22 00:44:44,920 WARN L202 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:45,668 WARN L202 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:46,368 WARN L202 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:49,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:49,013 INFO L93 Difference]: Finished difference Result 1385 states and 1678 transitions. [2021-02-22 00:44:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 00:44:49,014 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2021-02-22 00:44:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:49,023 INFO L225 Difference]: With dead ends: 1385 [2021-02-22 00:44:49,024 INFO L226 Difference]: Without dead ends: 934 [2021-02-22 00:44:49,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-22 00:44:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-02-22 00:44:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 582. [2021-02-22 00:44:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2021-02-22 00:44:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 630 transitions. [2021-02-22 00:44:49,257 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 630 transitions. Word has length 204 [2021-02-22 00:44:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:49,258 INFO L480 AbstractCegarLoop]: Abstraction has 582 states and 630 transitions. [2021-02-22 00:44:49,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:44:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 630 transitions. [2021-02-22 00:44:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-22 00:44:49,262 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:49,262 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] [2021-02-22 00:44:49,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 00:44:49,262 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:49,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1501881273, now seen corresponding path program 1 times [2021-02-22 00:44:49,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:49,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736529132] [2021-02-22 00:44:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:49,266 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:49,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:49,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:49,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:49,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:49,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:49,954 WARN L202 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:49,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:49,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:49,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:49,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:50,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:50,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:50,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:50,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-22 00:44:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-22 00:44:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:50,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:50,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:50,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736529132] [2021-02-22 00:44:50,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:50,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 00:44:50,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674864687] [2021-02-22 00:44:50,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 00:44:50,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:50,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 00:44:50,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-22 00:44:50,290 INFO L87 Difference]: Start difference. First operand 582 states and 630 transitions. Second operand 14 states. [2021-02-22 00:44:51,549 WARN L202 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:52,278 WARN L202 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:44:53,043 WARN L202 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:53,751 WARN L202 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:54,429 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:56,163 WARN L202 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:56,919 WARN L202 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:57,707 WARN L202 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:58,489 WARN L202 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:59,207 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:45:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:02,909 INFO L93 Difference]: Finished difference Result 1423 states and 1741 transitions. [2021-02-22 00:45:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 00:45:02,910 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2021-02-22 00:45:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:02,917 INFO L225 Difference]: With dead ends: 1423 [2021-02-22 00:45:02,917 INFO L226 Difference]: Without dead ends: 956 [2021-02-22 00:45:02,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-22 00:45:02,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-02-22 00:45:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 594. [2021-02-22 00:45:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2021-02-22 00:45:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 642 transitions. [2021-02-22 00:45:03,231 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 642 transitions. Word has length 204 [2021-02-22 00:45:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:03,231 INFO L480 AbstractCegarLoop]: Abstraction has 594 states and 642 transitions. [2021-02-22 00:45:03,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 00:45:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 642 transitions. [2021-02-22 00:45:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-22 00:45:03,233 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:03,233 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] [2021-02-22 00:45:03,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 00:45:03,234 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1152792042, now seen corresponding path program 1 times [2021-02-22 00:45:03,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:03,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347888924] [2021-02-22 00:45:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:03,237 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:03,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:03,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:03,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:03,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:03,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:03,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:03,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:03,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:03,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:03,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:45:03,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:03,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:03,999 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:45:04,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:45:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:45:04,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:45:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:45:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:45:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:45:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:45:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:45:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:45:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:45:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:45:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:45:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:45:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:45:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:45:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:45:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-22 00:45:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-22 00:45:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:45:04,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:45:04,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:45:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:45:04,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347888924] [2021-02-22 00:45:04,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:45:04,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 00:45:04,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90419825] [2021-02-22 00:45:04,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 00:45:04,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:45:04,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 00:45:04,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 00:45:04,296 INFO L87 Difference]: Start difference. First operand 594 states and 642 transitions. Second operand 8 states. [2021-02-22 00:45:05,295 WARN L202 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:06,580 WARN L202 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:45:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:45:13,095 INFO L93 Difference]: Finished difference Result 2092 states and 2636 transitions. [2021-02-22 00:45:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-22 00:45:13,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2021-02-22 00:45:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:45:13,107 INFO L225 Difference]: With dead ends: 2092 [2021-02-22 00:45:13,108 INFO L226 Difference]: Without dead ends: 1613 [2021-02-22 00:45:13,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-02-22 00:45:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-02-22 00:45:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1036. [2021-02-22 00:45:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2021-02-22 00:45:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1158 transitions. [2021-02-22 00:45:13,628 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1158 transitions. Word has length 204 [2021-02-22 00:45:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:45:13,628 INFO L480 AbstractCegarLoop]: Abstraction has 1036 states and 1158 transitions. [2021-02-22 00:45:13,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 00:45:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1158 transitions. [2021-02-22 00:45:13,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-22 00:45:13,631 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:45:13,631 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] [2021-02-22 00:45:13,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 00:45:13,632 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:45:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:45:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash -885197944, now seen corresponding path program 1 times [2021-02-22 00:45:13,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:45:13,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005468120] [2021-02-22 00:45:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:45:13,636 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:45:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:45:13,709 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:45:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:45:13,777 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:45:14,000 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 00:45:14,000 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 00:45:14,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 00:45:14,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 12:45:14 BoogieIcfgContainer [2021-02-22 00:45:14,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 00:45:14,027 INFO L168 Benchmark]: Toolchain (without parser) took 88088.55 ms. Allocated memory was 152.0 MB in the beginning and 457.2 MB in the end (delta: 305.1 MB). Free memory was 127.4 MB in the beginning and 164.8 MB in the end (delta: -37.4 MB). Peak memory consumption was 268.8 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:14,027 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 00:45:14,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.84 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 105.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:14,027 INFO L168 Benchmark]: Boogie Preprocessor took 207.31 ms. Allocated memory is still 152.0 MB. Free memory was 105.3 MB in the beginning and 133.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:14,028 INFO L168 Benchmark]: RCFGBuilder took 1596.64 ms. Allocated memory is still 152.0 MB. Free memory was 133.4 MB in the beginning and 90.0 MB in the end (delta: 43.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:14,028 INFO L168 Benchmark]: TraceAbstraction took 85550.88 ms. Allocated memory was 152.0 MB in the beginning and 457.2 MB in the end (delta: 305.1 MB). Free memory was 90.0 MB in the beginning and 164.8 MB in the end (delta: -74.9 MB). Peak memory consumption was 230.3 MB. Max. memory is 8.0 GB. [2021-02-22 00:45:14,029 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 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 706.84 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 105.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 207.31 ms. Allocated memory is still 152.0 MB. Free memory was 105.3 MB in the beginning and 133.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1596.64 ms. Allocated memory is still 152.0 MB. Free memory was 133.4 MB in the beginning and 90.0 MB in the end (delta: 43.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 85550.88 ms. Allocated memory was 152.0 MB in the beginning and 457.2 MB in the end (delta: 305.1 MB). Free memory was 90.0 MB in the beginning and 164.8 MB in the end (delta: -74.9 MB). Peak memory consumption was 230.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 839]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L379] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 [L778] COND TRUE 1 [L780] COND TRUE splverifierCounter < 4 [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) [L790] CALL waterRise() [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 [L790] RET waterRise() [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) [L800] CALL changeMethaneLevel() [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 [L800] RET changeMethaneLevel() [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L810] CALL startSystem() [L763] systemActive = 1 [L810] RET startSystem() [L823] CALL timeShift() [L589] COND FALSE !(\read(pumpRunning)) [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L644] int tmp ; [L647] COND FALSE !(\read(pumpRunning)) [L662] CALL processEnvironment__wrappee__highWaterSensor() [L618] int tmp ; [L621] COND TRUE ! pumpRunning [L623] CALL, EXPR isHighWaterLevel() [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR isHighWaterSensorDry() [L925] int retValue_acc ; [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); [L747] RET, EXPR isHighWaterSensorDry() [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); [L623] RET, EXPR isHighWaterLevel() [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L627] CALL activatePump() [L672] pumpRunning = 1 [L627] RET activatePump() [L662] RET processEnvironment__wrappee__highWaterSensor() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L185] int tmp ; [L186] int tmp___0 ; [L190] CALL, EXPR isMethaneLevelCritical() [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); [L190] RET, EXPR isMethaneLevelCritical() [L190] tmp = isMethaneLevelCritical() [L192] COND TRUE \read(tmp) [L194] CALL, EXPR isPumpRunning() [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); [L194] RET, EXPR isPumpRunning() [L194] tmp___0 = isPumpRunning() [L196] COND TRUE \read(tmp___0) [L198] CALL __automaton_fail() [L839] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 85.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 73.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2221 SDtfs, 5934 SDslu, 4475 SDs, 0 SdLazy, 8822 SolverSat, 1874 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 38.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1036occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 2136 StatesRemovedByMinimization, 9 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...