/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-36cd7be [2021-02-24 03:09:30,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:09:30,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:09:30,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:09:30,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:09:30,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:09:30,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:09:30,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:09:30,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:09:30,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:09:30,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:09:30,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:09:30,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:09:30,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:09:30,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:09:30,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:09:30,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:09:30,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:09:30,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:09:30,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:09:30,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:09:30,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:09:30,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:09:30,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:09:30,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:09:30,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:09:30,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:09:30,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:09:30,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:09:30,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:09:30,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:09:30,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:09:30,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:09:30,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:09:30,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:09:30,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:09:30,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:09:30,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:09:30,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:09:30,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:09:30,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:09:30,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:09:30,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:09:30,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:09:30,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:09:30,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:09:30,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:09:30,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:09:30,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:09:30,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:09:30,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:09:30,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:09:30,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:09:30,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:09:30,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:09:30,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:09:30,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:09:30,715 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:09:30,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:09:30,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:09:30,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:09:30,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:09:30,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:09:30,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:09:30,716 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:09:30,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:09:31,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:09:31,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:09:31,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:09:31,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:09:31,134 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:09:31,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2021-02-24 03:09:31,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b307b4e1f/58e2fae1376949a4af9a09c4221fcaba/FLAG35ee4687d [2021-02-24 03:09:31,978 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:09:31,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2021-02-24 03:09:31,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b307b4e1f/58e2fae1376949a4af9a09c4221fcaba/FLAG35ee4687d [2021-02-24 03:09:32,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b307b4e1f/58e2fae1376949a4af9a09c4221fcaba [2021-02-24 03:09:32,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:09:32,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:09:32,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:09:32,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:09:32,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:09:32,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:32,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304ee403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32, skipping insertion in model container [2021-02-24 03:09:32,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:32,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:09:32,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:09:32,701 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] [2021-02-24 03:09:32,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:09:32,747 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:09:32,892 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] [2021-02-24 03:09:32,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:09:32,953 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:09:32,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32 WrapperNode [2021-02-24 03:09:32,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:09:32,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:09:32,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:09:32,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:09:32,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:32,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:33,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:33,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:33,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:33,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:33,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (1/1) ... [2021-02-24 03:09:33,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:09:33,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:09:33,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:09:33,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:09:33,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (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 [2021-02-24 03:09:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:09:33,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:09:33,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:09:33,209 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:09:33,209 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:09:33,209 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:09:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:09:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:09:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:09:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:09:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:09:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:09:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:09:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:09:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:09:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:09:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:09:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:09:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:09:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:09:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:09:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:09:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:09:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:09:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:09:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:09:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:09:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:09:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:09:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:09:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:09:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:09:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:09:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:09:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:09:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:09:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:09:33,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:09:33,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:09:33,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:09:34,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:09:34,882 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:09:34,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:09:34 BoogieIcfgContainer [2021-02-24 03:09:34,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:09:34,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:09:34,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:09:34,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:09:34,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:09:32" (1/3) ... [2021-02-24 03:09:34,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c43f3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:09:34, skipping insertion in model container [2021-02-24 03:09:34,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:09:32" (2/3) ... [2021-02-24 03:09:34,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c43f3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:09:34, skipping insertion in model container [2021-02-24 03:09:34,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:09:34" (3/3) ... [2021-02-24 03:09:34,916 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2021-02-24 03:09:34,923 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:09:34,928 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:09:34,947 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:09:34,970 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:09:34,971 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:09:34,971 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:09:34,971 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:09:34,971 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:09:34,971 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:09:34,972 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:09:34,972 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:09:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2021-02-24 03:09:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:09:35,017 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:09:35,018 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] [2021-02-24 03:09:35,018 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:09:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:09:35,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1817269989, now seen corresponding path program 1 times [2021-02-24 03:09:35,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:09:35,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402019733] [2021-02-24 03:09:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:09:35,126 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:09:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:35,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:35,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:35,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:35,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,101 WARN L202 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:09:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:09:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:36,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:36,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:09:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:36,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:36,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:09:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:36,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:36,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:09:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:36,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:36,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:09:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:36,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:36,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:09:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:36,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:36,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:09:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:36,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:36,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:09:36,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402019733] [2021-02-24 03:09:36,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:09:36,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:09:36,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842698183] [2021-02-24 03:09:36,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:09:36,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:09:36,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:09:36,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:09:36,359 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2021-02-24 03:09:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:09:38,709 INFO L93 Difference]: Finished difference Result 482 states and 574 transitions. [2021-02-24 03:09:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:09:38,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:09:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:09:38,729 INFO L225 Difference]: With dead ends: 482 [2021-02-24 03:09:38,729 INFO L226 Difference]: Without dead ends: 301 [2021-02-24 03:09:38,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:09:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-02-24 03:09:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259. [2021-02-24 03:09:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-24 03:09:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 281 transitions. [2021-02-24 03:09:38,958 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 281 transitions. Word has length 147 [2021-02-24 03:09:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:09:38,961 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 281 transitions. [2021-02-24 03:09:38,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:09:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 281 transitions. [2021-02-24 03:09:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:09:38,974 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:09:38,974 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] [2021-02-24 03:09:38,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:09:38,975 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:09:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:09:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash 167821607, now seen corresponding path program 1 times [2021-02-24 03:09:38,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:09:38,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428283494] [2021-02-24 03:09:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:09:38,983 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:09:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:39,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,765 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:09:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:09:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:09:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:09:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:09:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:09:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:09:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:09:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:39,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:39,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:09:39,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428283494] [2021-02-24 03:09:39,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:09:39,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:09:39,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730897040] [2021-02-24 03:09:39,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:09:39,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:09:39,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:09:39,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:09:39,869 INFO L87 Difference]: Start difference. First operand 259 states and 281 transitions. Second operand 4 states. [2021-02-24 03:09:40,957 WARN L202 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:09:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:09:42,505 INFO L93 Difference]: Finished difference Result 394 states and 444 transitions. [2021-02-24 03:09:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:09:42,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:09:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:09:42,519 INFO L225 Difference]: With dead ends: 394 [2021-02-24 03:09:42,519 INFO L226 Difference]: Without dead ends: 284 [2021-02-24 03:09:42,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:09:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-24 03:09:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2021-02-24 03:09:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-02-24 03:09:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2021-02-24 03:09:42,639 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 148 [2021-02-24 03:09:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:09:42,640 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2021-02-24 03:09:42,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:09:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2021-02-24 03:09:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-24 03:09:42,643 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:09:42,643 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] [2021-02-24 03:09:42,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:09:42,644 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:09:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:09:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1076170049, now seen corresponding path program 1 times [2021-02-24 03:09:42,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:09:42,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37269502] [2021-02-24 03:09:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:09:42,648 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:09:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:42,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:42,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:42,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:42,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:42,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:42,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:42,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:42,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:42,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:42,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:09:42,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:42,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,333 WARN L202 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:09:43,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:09:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:09:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:09:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:09:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:09:43,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:09:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:09:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:09:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-24 03:09:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:09:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:43,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:43,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:09:43,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37269502] [2021-02-24 03:09:43,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:09:43,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:09:43,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970599539] [2021-02-24 03:09:43,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:09:43,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:09:43,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:09:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:09:43,535 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand 10 states. [2021-02-24 03:09:44,586 WARN L202 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:09:45,423 WARN L202 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:09:46,128 WARN L202 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:09:46,810 WARN L202 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:09:47,443 WARN L202 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:09:48,035 WARN L202 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:09:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:09:50,645 INFO L93 Difference]: Finished difference Result 440 states and 506 transitions. [2021-02-24 03:09:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:09:50,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-24 03:09:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:09:50,649 INFO L225 Difference]: With dead ends: 440 [2021-02-24 03:09:50,649 INFO L226 Difference]: Without dead ends: 306 [2021-02-24 03:09:50,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:09:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-24 03:09:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2021-02-24 03:09:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-02-24 03:09:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2021-02-24 03:09:50,753 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 161 [2021-02-24 03:09:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:09:50,753 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2021-02-24 03:09:50,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:09:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2021-02-24 03:09:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-24 03:09:50,756 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:09:50,757 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] [2021-02-24 03:09:50,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:09:50,757 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:09:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:09:50,758 INFO L82 PathProgramCache]: Analyzing trace with hash 559922479, now seen corresponding path program 1 times [2021-02-24 03:09:50,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:09:50,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432390659] [2021-02-24 03:09:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:09:50,762 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:09:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:50,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:50,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:50,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:50,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:50,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:50,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:50,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:50,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:50,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:50,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:50,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:50,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,408 WARN L202 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:09:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:09:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:09:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:09:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:09:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:09:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:09:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:09:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:51,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:09:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:51,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:09:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:09:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-24 03:09:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-24 03:09:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:51,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:51,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:09:51,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432390659] [2021-02-24 03:09:51,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:09:51,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:09:51,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157139820] [2021-02-24 03:09:51,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:09:51,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:09:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:09:51,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:09:51,611 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 7 states. [2021-02-24 03:09:52,582 WARN L202 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:09:55,327 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:09:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:09:57,009 INFO L93 Difference]: Finished difference Result 620 states and 736 transitions. [2021-02-24 03:09:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:09:57,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-24 03:09:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:09:57,016 INFO L225 Difference]: With dead ends: 620 [2021-02-24 03:09:57,017 INFO L226 Difference]: Without dead ends: 486 [2021-02-24 03:09:57,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:09:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-02-24 03:09:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 359. [2021-02-24 03:09:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2021-02-24 03:09:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 386 transitions. [2021-02-24 03:09:57,173 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 386 transitions. Word has length 174 [2021-02-24 03:09:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:09:57,174 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 386 transitions. [2021-02-24 03:09:57,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:09:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 386 transitions. [2021-02-24 03:09:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-24 03:09:57,177 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:09:57,177 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] [2021-02-24 03:09:57,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:09:57,177 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:09:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:09:57,181 INFO L82 PathProgramCache]: Analyzing trace with hash -113254638, now seen corresponding path program 1 times [2021-02-24 03:09:57,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:09:57,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235596918] [2021-02-24 03:09:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:09:57,184 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:09:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,844 WARN L202 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:09:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:09:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:09:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:09:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:09:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:09:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:09:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:09:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:09:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:09:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:09:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:09:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-24 03:09:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:57,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:57,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:57,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:57,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:09:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-24 03:09:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:09:58,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:09:58,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:09:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:09:58,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235596918] [2021-02-24 03:09:58,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:09:58,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:09:58,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296645722] [2021-02-24 03:09:58,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:09:58,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:09:58,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:09:58,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:09:58,082 INFO L87 Difference]: Start difference. First operand 359 states and 386 transitions. Second operand 10 states. [2021-02-24 03:09:58,990 WARN L202 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:01,697 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:02,411 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:03,146 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:03,847 WARN L202 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:04,486 WARN L202 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:05,170 WARN L202 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:05,828 WARN L202 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:06,754 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:09,543 INFO L93 Difference]: Finished difference Result 1036 states and 1255 transitions. [2021-02-24 03:10:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 03:10:09,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2021-02-24 03:10:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:09,551 INFO L225 Difference]: With dead ends: 1036 [2021-02-24 03:10:09,552 INFO L226 Difference]: Without dead ends: 792 [2021-02-24 03:10:09,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-24 03:10:09,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-02-24 03:10:09,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 566. [2021-02-24 03:10:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-02-24 03:10:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 615 transitions. [2021-02-24 03:10:09,827 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 615 transitions. Word has length 198 [2021-02-24 03:10:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:09,828 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 615 transitions. [2021-02-24 03:10:09,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:10:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 615 transitions. [2021-02-24 03:10:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-24 03:10:09,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:09,832 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] [2021-02-24 03:10:09,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:10:09,832 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:09,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1063634956, now seen corresponding path program 1 times [2021-02-24 03:10:09,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:09,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348509431] [2021-02-24 03:10:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:09,836 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:09,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:09,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:09,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,456 WARN L202 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:10,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:10:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:10:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:10:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:10:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-24 03:10:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-24 03:10:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:10,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:10,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:10,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:10,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:10,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348509431] [2021-02-24 03:10:10,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:10,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 03:10:10,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402645154] [2021-02-24 03:10:10,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 03:10:10,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:10,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 03:10:10,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:10:10,733 INFO L87 Difference]: Start difference. First operand 566 states and 615 transitions. Second operand 11 states. [2021-02-24 03:10:11,726 WARN L202 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:14,505 WARN L202 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:15,124 WARN L202 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:15,796 WARN L202 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:16,457 WARN L202 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:17,148 WARN L202 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:17,881 WARN L202 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:18,553 WARN L202 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:19,249 WARN L202 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:21,199 INFO L93 Difference]: Finished difference Result 927 states and 1149 transitions. [2021-02-24 03:10:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 03:10:21,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2021-02-24 03:10:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:21,208 INFO L225 Difference]: With dead ends: 927 [2021-02-24 03:10:21,208 INFO L226 Difference]: Without dead ends: 924 [2021-02-24 03:10:21,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-02-24 03:10:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-02-24 03:10:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 566. [2021-02-24 03:10:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-02-24 03:10:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 614 transitions. [2021-02-24 03:10:21,486 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 614 transitions. Word has length 203 [2021-02-24 03:10:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:21,487 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 614 transitions. [2021-02-24 03:10:21,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 03:10:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 614 transitions. [2021-02-24 03:10:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-24 03:10:21,490 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:21,490 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] [2021-02-24 03:10:21,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:10:21,491 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:21,491 INFO L82 PathProgramCache]: Analyzing trace with hash -528011097, now seen corresponding path program 1 times [2021-02-24 03:10:21,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:21,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759609630] [2021-02-24 03:10:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:21,495 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:21,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:21,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:21,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:21,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,124 WARN L202 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:22,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:10:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:10:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:22,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:22,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:22,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:22,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:10:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:10:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-24 03:10:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-24 03:10:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:22,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:22,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:22,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759609630] [2021-02-24 03:10:22,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:22,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 03:10:22,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238217481] [2021-02-24 03:10:22,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 03:10:22,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:22,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 03:10:22,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:10:22,403 INFO L87 Difference]: Start difference. First operand 566 states and 614 transitions. Second operand 11 states. [2021-02-24 03:10:24,613 WARN L202 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:25,296 WARN L202 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:10:26,016 WARN L202 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-24 03:10:26,688 WARN L202 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:27,370 WARN L202 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:10:27,998 WARN L202 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:30,464 INFO L93 Difference]: Finished difference Result 1385 states and 1678 transitions. [2021-02-24 03:10:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:10:30,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2021-02-24 03:10:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:30,474 INFO L225 Difference]: With dead ends: 1385 [2021-02-24 03:10:30,474 INFO L226 Difference]: Without dead ends: 934 [2021-02-24 03:10:30,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-24 03:10:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-02-24 03:10:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 582. [2021-02-24 03:10:30,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2021-02-24 03:10:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 630 transitions. [2021-02-24 03:10:30,713 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 630 transitions. Word has length 204 [2021-02-24 03:10:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:30,714 INFO L480 AbstractCegarLoop]: Abstraction has 582 states and 630 transitions. [2021-02-24 03:10:30,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 03:10:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 630 transitions. [2021-02-24 03:10:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-24 03:10:30,718 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:30,718 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] [2021-02-24 03:10:30,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 03:10:30,718 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:30,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:30,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1501881273, now seen corresponding path program 1 times [2021-02-24 03:10:30,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:30,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857631703] [2021-02-24 03:10:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:30,722 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:30,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:30,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:30,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:30,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:30,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,362 WARN L202 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:31,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:31,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:10:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:10:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:31,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:31,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:10:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:31,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:10:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-24 03:10:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-24 03:10:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:31,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:31,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:31,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857631703] [2021-02-24 03:10:31,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:31,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 03:10:31,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651687405] [2021-02-24 03:10:31,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 03:10:31,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:31,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 03:10:31,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:10:31,684 INFO L87 Difference]: Start difference. First operand 582 states and 630 transitions. Second operand 14 states. [2021-02-24 03:10:32,790 WARN L202 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:33,475 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:10:34,148 WARN L202 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:34,798 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:10:35,388 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:37,033 WARN L202 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:37,694 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:10:38,383 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:39,073 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:10:39,715 WARN L202 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:43,212 INFO L93 Difference]: Finished difference Result 1423 states and 1741 transitions. [2021-02-24 03:10:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 03:10:43,212 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2021-02-24 03:10:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:43,219 INFO L225 Difference]: With dead ends: 1423 [2021-02-24 03:10:43,219 INFO L226 Difference]: Without dead ends: 956 [2021-02-24 03:10:43,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-24 03:10:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-02-24 03:10:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 594. [2021-02-24 03:10:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2021-02-24 03:10:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 642 transitions. [2021-02-24 03:10:43,558 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 642 transitions. Word has length 204 [2021-02-24 03:10:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:43,559 INFO L480 AbstractCegarLoop]: Abstraction has 594 states and 642 transitions. [2021-02-24 03:10:43,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 03:10:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 642 transitions. [2021-02-24 03:10:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-24 03:10:43,564 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:43,564 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] [2021-02-24 03:10:43,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 03:10:43,564 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:43,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1152792042, now seen corresponding path program 1 times [2021-02-24 03:10:43,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:43,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351313049] [2021-02-24 03:10:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:43,569 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:10:43,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,218 WARN L202 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:10:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:10:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:10:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:10:44,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:10:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:10:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:10:44,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:10:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-24 03:10:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-24 03:10:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:44,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351313049] [2021-02-24 03:10:44,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:44,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 03:10:44,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441530587] [2021-02-24 03:10:44,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 03:10:44,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:44,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 03:10:44,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:10:44,458 INFO L87 Difference]: Start difference. First operand 594 states and 642 transitions. Second operand 8 states. [2021-02-24 03:10:45,495 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:46,692 WARN L202 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:52,731 INFO L93 Difference]: Finished difference Result 2092 states and 2636 transitions. [2021-02-24 03:10:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 03:10:52,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2021-02-24 03:10:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:52,745 INFO L225 Difference]: With dead ends: 2092 [2021-02-24 03:10:52,745 INFO L226 Difference]: Without dead ends: 1613 [2021-02-24 03:10:52,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-02-24 03:10:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-02-24 03:10:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1036. [2021-02-24 03:10:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2021-02-24 03:10:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1158 transitions. [2021-02-24 03:10:53,355 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1158 transitions. Word has length 204 [2021-02-24 03:10:53,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:53,355 INFO L480 AbstractCegarLoop]: Abstraction has 1036 states and 1158 transitions. [2021-02-24 03:10:53,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 03:10:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1158 transitions. [2021-02-24 03:10:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-24 03:10:53,359 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:53,359 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] [2021-02-24 03:10:53,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 03:10:53,359 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -885197944, now seen corresponding path program 1 times [2021-02-24 03:10:53,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:53,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588347337] [2021-02-24 03:10:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:53,365 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:10:53,461 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:10:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:10:53,524 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:10:53,858 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:10:53,859 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:10:53,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 03:10:53,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:10:53 BoogieIcfgContainer [2021-02-24 03:10:53,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:10:53,887 INFO L168 Benchmark]: Toolchain (without parser) took 81638.25 ms. Allocated memory was 162.5 MB in the beginning and 412.1 MB in the end (delta: 249.6 MB). Free memory was 138.4 MB in the beginning and 290.4 MB in the end (delta: -152.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:10:53,887 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:10:53,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.39 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 116.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:10:53,887 INFO L168 Benchmark]: Boogie Preprocessor took 152.24 ms. Allocated memory is still 162.5 MB. Free memory was 116.4 MB in the beginning and 112.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:10:53,888 INFO L168 Benchmark]: RCFGBuilder took 1777.01 ms. Allocated memory is still 162.5 MB. Free memory was 112.5 MB in the beginning and 59.6 MB in the end (delta: 52.8 MB). Peak memory consumption was 53.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:10:53,888 INFO L168 Benchmark]: TraceAbstraction took 78998.64 ms. Allocated memory was 162.5 MB in the beginning and 412.1 MB in the end (delta: 249.6 MB). Free memory was 59.1 MB in the beginning and 290.4 MB in the end (delta: -231.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:10:53,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 686.39 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 116.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 152.24 ms. Allocated memory is still 162.5 MB. Free memory was 116.4 MB in the beginning and 112.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1777.01 ms. Allocated memory is still 162.5 MB. Free memory was 112.5 MB in the beginning and 59.6 MB in the end (delta: 52.8 MB). Peak memory consumption was 53.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 78998.64 ms. Allocated memory was 162.5 MB in the beginning and 412.1 MB in the end (delta: 249.6 MB). Free memory was 59.1 MB in the beginning and 290.4 MB in the end (delta: -231.3 MB). Peak memory consumption was 18.8 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: 78.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 67.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2224 SDtfs, 5934 SDslu, 4486 SDs, 0 SdLazy, 8890 SolverSat, 1868 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 35.1s 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: 2.3s 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...