/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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:10:20,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:10:20,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:10:20,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:10:20,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:10:20,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:10:20,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:10:20,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:10:20,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:10:20,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:10:20,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:10:20,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:10:20,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:10:20,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:10:20,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:10:20,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:10:20,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:10:20,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:10:20,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:10:20,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:10:20,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:10:20,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:10:20,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:10:20,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:10:20,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:10:20,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:10:20,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:10:20,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:10:20,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:10:20,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:10:20,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:10:20,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:10:20,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:10:20,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:10:20,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:10:20,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:10:20,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:10:20,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:10:20,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:10:20,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:10:20,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:10:20,268 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 03:10:20,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:10:20,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:10:20,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:10:20,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:10:20,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:10:20,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:10:20,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:10:20,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:10:20,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:10:20,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:10:20,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:10:20,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:10:20,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:10:20,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:10:20,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:10:20,293 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:10:20,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:10:20,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:10:20,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:10:20,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:10:20,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:10:20,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:10:20,294 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:10:20,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:10:20,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:10:20,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:10:20,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:10:20,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:10:20,694 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:10:20,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2021-02-24 03:10:20,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14845642e/c333ad6af4c6471796a83d591d857f2c/FLAGa06d24f6f [2021-02-24 03:10:21,410 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:10:21,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2021-02-24 03:10:21,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14845642e/c333ad6af4c6471796a83d591d857f2c/FLAGa06d24f6f [2021-02-24 03:10:21,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14845642e/c333ad6af4c6471796a83d591d857f2c [2021-02-24 03:10:21,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:10:21,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:10:21,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:21,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:10:21,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:10:21,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:21" (1/1) ... [2021-02-24 03:10:21,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557032fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:21, skipping insertion in model container [2021-02-24 03:10:21,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:21" (1/1) ... [2021-02-24 03:10:21,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:10:21,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:10:22,141 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_product51.cil.c[14932,14945] [2021-02-24 03:10:22,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:22,208 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:10:22,342 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_product51.cil.c[14932,14945] [2021-02-24 03:10:22,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:22,408 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:10:22,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22 WrapperNode [2021-02-24 03:10:22,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:22,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:10:22,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:10:22,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:10:22,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (1/1) ... [2021-02-24 03:10:22,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (1/1) ... [2021-02-24 03:10:22,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (1/1) ... [2021-02-24 03:10:22,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (1/1) ... [2021-02-24 03:10:22,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (1/1) ... [2021-02-24 03:10:22,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (1/1) ... [2021-02-24 03:10:22,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (1/1) ... [2021-02-24 03:10:22,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:10:22,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:10:22,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:10:22,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:10:22,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (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 03:10:22,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:10:22,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:10:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:10:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:10:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:10:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:10:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:10:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:10:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:10:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:10:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:10:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:10:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:10:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:10:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:10:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:10:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:10:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:10:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:10:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:10:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:10:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:10:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:10:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:10:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:10:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:10:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:10:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:10:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:10:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:10:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:10:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:10:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:10:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:10:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:10:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:10:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:10:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:10:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:10:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:10:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:10:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:10:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:10:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:10:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:10:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:10:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:10:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:10:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:10:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:10:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:10:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:10:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:10:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:10:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:10:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:10:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:10:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:10:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:10:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:10:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:10:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:10:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:10:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:10:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:10:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:10:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:10:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:10:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:10:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:10:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:10:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:10:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:10:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:10:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:10:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:10:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:10:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:10:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:10:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:10:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:10:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:10:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:10:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:10:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:10:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:10:23,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:10:23,693 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:10:23,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:10:23 BoogieIcfgContainer [2021-02-24 03:10:23,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:10:23,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:10:23,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:10:23,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:10:23,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:10:21" (1/3) ... [2021-02-24 03:10:23,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313a08a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:10:23, skipping insertion in model container [2021-02-24 03:10:23,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:22" (2/3) ... [2021-02-24 03:10:23,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313a08a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:10:23, skipping insertion in model container [2021-02-24 03:10:23,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:10:23" (3/3) ... [2021-02-24 03:10:23,705 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2021-02-24 03:10:23,712 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:10:23,717 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:10:23,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:10:23,760 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:10:23,760 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:10:23,760 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:10:23,760 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:10:23,760 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:10:23,761 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:10:23,761 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:10:23,761 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:10:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states. [2021-02-24 03:10:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:10:23,805 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:23,806 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 03:10:23,807 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:23,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:23,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1867439208, now seen corresponding path program 1 times [2021-02-24 03:10:23,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:23,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36567239] [2021-02-24 03:10:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:23,903 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,545 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:10:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:24,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:24,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:24,768 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 03:10:24,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36567239] [2021-02-24 03:10:24,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:24,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:10:24,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446958794] [2021-02-24 03:10:24,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:10:24,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:24,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:10:24,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:10:24,798 INFO L87 Difference]: Start difference. First operand 330 states. Second operand 3 states. [2021-02-24 03:10:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:26,476 INFO L93 Difference]: Finished difference Result 509 states and 605 transitions. [2021-02-24 03:10:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:10:26,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:10:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:26,494 INFO L225 Difference]: With dead ends: 509 [2021-02-24 03:10:26,494 INFO L226 Difference]: Without dead ends: 315 [2021-02-24 03:10:26,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:10:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-02-24 03:10:26,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 272. [2021-02-24 03:10:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-02-24 03:10:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 296 transitions. [2021-02-24 03:10:26,680 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 296 transitions. Word has length 147 [2021-02-24 03:10:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:26,681 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 296 transitions. [2021-02-24 03:10:26,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:10:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 296 transitions. [2021-02-24 03:10:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:10:26,686 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:26,686 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 03:10:26,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:10:26,687 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:26,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:26,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1462754815, now seen corresponding path program 1 times [2021-02-24 03:10:26,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:26,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594997451] [2021-02-24 03:10:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:26,692 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:26,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:26,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:26,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:26,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:26,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:26,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,102 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:27,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:27,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:27,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:27,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:27,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:27,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:27,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:27,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:27,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:27,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:27,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:10:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:27,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:27,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:10:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:27,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:27,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:27,259 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 03:10:27,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594997451] [2021-02-24 03:10:27,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:27,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:10:27,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43940730] [2021-02-24 03:10:27,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:10:27,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:10:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:10:27,266 INFO L87 Difference]: Start difference. First operand 272 states and 296 transitions. Second operand 4 states. [2021-02-24 03:10:28,023 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:29,174 INFO L93 Difference]: Finished difference Result 419 states and 471 transitions. [2021-02-24 03:10:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:10:29,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:10:29,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:29,179 INFO L225 Difference]: With dead ends: 419 [2021-02-24 03:10:29,179 INFO L226 Difference]: Without dead ends: 298 [2021-02-24 03:10:29,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:10:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-02-24 03:10:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 262. [2021-02-24 03:10:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-02-24 03:10:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 283 transitions. [2021-02-24 03:10:29,331 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 283 transitions. Word has length 148 [2021-02-24 03:10:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:29,332 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 283 transitions. [2021-02-24 03:10:29,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:10:29,332 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 283 transitions. [2021-02-24 03:10:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-24 03:10:29,335 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:29,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:10:29,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:10:29,336 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:29,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1061125664, now seen corresponding path program 1 times [2021-02-24 03:10:29,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:29,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832480150] [2021-02-24 03:10:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:29,341 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:29,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:29,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:29,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:29,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:29,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:10:29,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:10:29,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:10:29,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:29,813 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:29,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:29,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:10:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:29,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:29,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:29,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:29,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:29,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:29,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:29,989 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:10:29,990 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:10:30,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:30,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:30,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:10:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:30,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:10:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:30,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:30,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:30,067 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 03:10:30,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832480150] [2021-02-24 03:10:30,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:30,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:10:30,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664998547] [2021-02-24 03:10:30,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:10:30,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:30,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:10:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:10:30,070 INFO L87 Difference]: Start difference. First operand 262 states and 283 transitions. Second operand 9 states. [2021-02-24 03:10:30,641 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:31,042 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:10:31,422 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:10:31,792 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:32,166 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:32,519 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:33,600 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:36,033 INFO L93 Difference]: Finished difference Result 687 states and 790 transitions. [2021-02-24 03:10:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:10:36,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-24 03:10:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:36,042 INFO L225 Difference]: With dead ends: 687 [2021-02-24 03:10:36,043 INFO L226 Difference]: Without dead ends: 540 [2021-02-24 03:10:36,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:10:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-02-24 03:10:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 473. [2021-02-24 03:10:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2021-02-24 03:10:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 529 transitions. [2021-02-24 03:10:36,300 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 529 transitions. Word has length 157 [2021-02-24 03:10:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:36,301 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 529 transitions. [2021-02-24 03:10:36,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:10:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 529 transitions. [2021-02-24 03:10:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-24 03:10:36,304 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:36,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:10:36,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:10:36,305 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:36,306 INFO L82 PathProgramCache]: Analyzing trace with hash -416365942, now seen corresponding path program 1 times [2021-02-24 03:10:36,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:36,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943795184] [2021-02-24 03:10:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:36,310 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,698 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:10:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-24 03:10:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:36,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-24 03:10:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:36,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:36,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:36,847 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 03:10:36,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943795184] [2021-02-24 03:10:36,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:36,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:10:36,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516632949] [2021-02-24 03:10:36,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:10:36,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:36,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:10:36,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:10:36,850 INFO L87 Difference]: Start difference. First operand 473 states and 529 transitions. Second operand 9 states. [2021-02-24 03:10:37,669 WARN L202 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:39,309 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:39,672 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:40,165 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:40,530 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:40,902 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:41,267 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:41,626 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:42,271 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:43,526 INFO L93 Difference]: Finished difference Result 1304 states and 1559 transitions. [2021-02-24 03:10:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:10:43,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-24 03:10:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:43,534 INFO L225 Difference]: With dead ends: 1304 [2021-02-24 03:10:43,534 INFO L226 Difference]: Without dead ends: 946 [2021-02-24 03:10:43,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:10:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-02-24 03:10:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 792. [2021-02-24 03:10:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2021-02-24 03:10:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 899 transitions. [2021-02-24 03:10:43,919 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 899 transitions. Word has length 166 [2021-02-24 03:10:43,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:43,919 INFO L480 AbstractCegarLoop]: Abstraction has 792 states and 899 transitions. [2021-02-24 03:10:43,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:10:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 899 transitions. [2021-02-24 03:10:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-24 03:10:43,923 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:43,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:10:43,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:10:43,923 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:43,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:43,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2083222157, now seen corresponding path program 1 times [2021-02-24 03:10:43,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:43,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539160182] [2021-02-24 03:10:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:43,927 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:44,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:44,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,309 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:44,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,367 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 1 [2021-02-24 03:10:44,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-24 03:10:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,408 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 3 [2021-02-24 03:10:44,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:10:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-24 03:10:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:44,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:44,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:44,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:44,481 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 03:10:44,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539160182] [2021-02-24 03:10:44,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:44,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:10:44,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136778946] [2021-02-24 03:10:44,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:10:44,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:44,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:10:44,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:10:44,484 INFO L87 Difference]: Start difference. First operand 792 states and 899 transitions. Second operand 10 states. [2021-02-24 03:10:45,103 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:46,563 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:46,951 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:47,361 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:47,780 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:48,122 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:48,914 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:49,264 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:49,672 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:51,087 INFO L93 Difference]: Finished difference Result 2033 states and 2502 transitions. [2021-02-24 03:10:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 03:10:51,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-24 03:10:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:51,099 INFO L225 Difference]: With dead ends: 2033 [2021-02-24 03:10:51,099 INFO L226 Difference]: Without dead ends: 1356 [2021-02-24 03:10:51,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-24 03:10:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-02-24 03:10:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1094. [2021-02-24 03:10:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2021-02-24 03:10:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1262 transitions. [2021-02-24 03:10:51,622 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1262 transitions. Word has length 171 [2021-02-24 03:10:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:51,622 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 1262 transitions. [2021-02-24 03:10:51,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:10:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1262 transitions. [2021-02-24 03:10:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-24 03:10:51,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:51,627 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] [2021-02-24 03:10:51,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:10:51,627 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash -70704157, now seen corresponding path program 1 times [2021-02-24 03:10:51,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:51,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529093789] [2021-02-24 03:10:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:51,631 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:51,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:51,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:51,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:51,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,005 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:52,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:10:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:52,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:52,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:52,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:52,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:10:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:10:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-24 03:10:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-24 03:10:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:52,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:52,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:52,233 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 03:10:52,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529093789] [2021-02-24 03:10:52,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:52,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:10:52,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585922908] [2021-02-24 03:10:52,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:10:52,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:52,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:10:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:10:52,235 INFO L87 Difference]: Start difference. First operand 1094 states and 1262 transitions. Second operand 10 states. [2021-02-24 03:10:53,706 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:54,080 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:10:54,472 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-24 03:10:54,871 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:55,277 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:10:55,636 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:57,288 INFO L93 Difference]: Finished difference Result 2477 states and 3031 transitions. [2021-02-24 03:10:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:10:57,289 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2021-02-24 03:10:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:57,298 INFO L225 Difference]: With dead ends: 2477 [2021-02-24 03:10:57,298 INFO L226 Difference]: Without dead ends: 1498 [2021-02-24 03:10:57,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:10:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-02-24 03:10:57,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1132. [2021-02-24 03:10:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2021-02-24 03:10:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1302 transitions. [2021-02-24 03:10:57,755 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1302 transitions. Word has length 200 [2021-02-24 03:10:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:57,755 INFO L480 AbstractCegarLoop]: Abstraction has 1132 states and 1302 transitions. [2021-02-24 03:10:57,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:10:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1302 transitions. [2021-02-24 03:10:57,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-24 03:10:57,760 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:57,760 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] [2021-02-24 03:10:57,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:10:57,761 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:57,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1044574333, now seen corresponding path program 1 times [2021-02-24 03:10:57,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:57,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274003057] [2021-02-24 03:10:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:57,765 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:57,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:57,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:57,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:57,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:57,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:57,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:57,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:57,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:57,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:57,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,135 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:58,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:10:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:10:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:58,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:58,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:10:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:58,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:10:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-24 03:10:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-24 03:10:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:58,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:58,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:58,417 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 03:10:58,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274003057] [2021-02-24 03:10:58,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:58,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 03:10:58,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65865880] [2021-02-24 03:10:58,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 03:10:58,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:58,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 03:10:58,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-24 03:10:58,420 INFO L87 Difference]: Start difference. First operand 1132 states and 1302 transitions. Second operand 13 states. [2021-02-24 03:10:59,173 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:59,540 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:10:59,899 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:00,260 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:00,600 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:01,655 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:02,022 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:02,421 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:02,832 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:03,200 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:05,127 INFO L93 Difference]: Finished difference Result 2559 states and 3170 transitions. [2021-02-24 03:11:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:11:05,128 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2021-02-24 03:11:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:05,138 INFO L225 Difference]: With dead ends: 2559 [2021-02-24 03:11:05,138 INFO L226 Difference]: Without dead ends: 1542 [2021-02-24 03:11:05,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-24 03:11:05,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-02-24 03:11:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1156. [2021-02-24 03:11:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2021-02-24 03:11:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1326 transitions. [2021-02-24 03:11:05,800 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1326 transitions. Word has length 200 [2021-02-24 03:11:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:05,800 INFO L480 AbstractCegarLoop]: Abstraction has 1156 states and 1326 transitions. [2021-02-24 03:11:05,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 03:11:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1326 transitions. [2021-02-24 03:11:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-24 03:11:05,805 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:05,805 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] [2021-02-24 03:11:05,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 03:11:05,805 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1610098982, now seen corresponding path program 1 times [2021-02-24 03:11:05,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:05,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361561054] [2021-02-24 03:11:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:05,813 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:05,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:05,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:05,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:05,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:05,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:05,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:05,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:05,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:05,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:05,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:05,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:05,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,161 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:11:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:06,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-24 03:11:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-24 03:11:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,343 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 03:11:06,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361561054] [2021-02-24 03:11:06,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:06,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:11:06,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217693044] [2021-02-24 03:11:06,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:11:06,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:06,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:11:06,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:11:06,346 INFO L87 Difference]: Start difference. First operand 1156 states and 1326 transitions. Second operand 7 states. [2021-02-24 03:11:06,924 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:07,639 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:11,036 INFO L93 Difference]: Finished difference Result 3857 states and 4804 transitions. [2021-02-24 03:11:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:11:11,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2021-02-24 03:11:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:11,053 INFO L225 Difference]: With dead ends: 3857 [2021-02-24 03:11:11,053 INFO L226 Difference]: Without dead ends: 2816 [2021-02-24 03:11:11,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:11:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-02-24 03:11:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2312. [2021-02-24 03:11:12,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2021-02-24 03:11:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2682 transitions. [2021-02-24 03:11:12,385 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2682 transitions. Word has length 200 [2021-02-24 03:11:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:12,385 INFO L480 AbstractCegarLoop]: Abstraction has 2312 states and 2682 transitions. [2021-02-24 03:11:12,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:11:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2682 transitions. [2021-02-24 03:11:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-24 03:11:12,389 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:12,389 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] [2021-02-24 03:11:12,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 03:11:12,390 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash 206217637, now seen corresponding path program 1 times [2021-02-24 03:11:12,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:12,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085051915] [2021-02-24 03:11:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:12,394 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:11:12,484 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:11:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:11:12,550 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:11:12,809 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:11:12,809 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:11:12,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 03:11:12,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:11:12 BoogieIcfgContainer [2021-02-24 03:11:12,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:11:12,836 INFO L168 Benchmark]: Toolchain (without parser) took 51115.81 ms. Allocated memory was 164.6 MB in the beginning and 964.7 MB in the end (delta: 800.1 MB). Free memory was 139.6 MB in the beginning and 667.9 MB in the end (delta: -528.3 MB). Peak memory consumption was 272.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:12,836 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:11:12,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.09 ms. Allocated memory is still 164.6 MB. Free memory was 138.5 MB in the beginning and 117.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:12,837 INFO L168 Benchmark]: Boogie Preprocessor took 92.29 ms. Allocated memory is still 164.6 MB. Free memory was 117.1 MB in the beginning and 113.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:12,837 INFO L168 Benchmark]: RCFGBuilder took 1193.17 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 113.1 MB in the beginning and 166.1 MB in the end (delta: -53.0 MB). Peak memory consumption was 63.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:12,837 INFO L168 Benchmark]: TraceAbstraction took 49136.97 ms. Allocated memory was 198.2 MB in the beginning and 964.7 MB in the end (delta: 766.5 MB). Free memory was 165.6 MB in the beginning and 667.9 MB in the end (delta: -502.3 MB). Peak memory consumption was 263.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:12,839 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 164.6 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 669.09 ms. Allocated memory is still 164.6 MB. Free memory was 138.5 MB in the beginning and 117.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.29 ms. Allocated memory is still 164.6 MB. Free memory was 117.1 MB in the beginning and 113.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1193.17 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 113.1 MB in the beginning and 166.1 MB in the end (delta: -53.0 MB). Peak memory consumption was 63.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 49136.97 ms. Allocated memory was 198.2 MB in the beginning and 964.7 MB in the end (delta: 766.5 MB). Free memory was 165.6 MB in the beginning and 667.9 MB in the end (delta: -502.3 MB). Peak memory consumption was 263.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 706]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L505] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L775] int cleanupTimeShifts = 4; [L872] int waterLevel = 1; [L873] int methaneLevelCritical = 0; [L848] int retValue_acc ; [L849] int tmp ; [L853] FCALL select_helpers() [L854] FCALL select_features() [L855] CALL, EXPR valid_product() [L740] int retValue_acc ; [L743] retValue_acc = 1 [L744] return (retValue_acc); [L855] RET, EXPR valid_product() [L855] tmp = valid_product() [L857] COND TRUE \read(tmp) [L859] FCALL setup() [L860] CALL runTest() [L842] CALL test() [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) [L69] CALL waterRise() [L890] COND TRUE waterLevel < 2 [L891] waterLevel = waterLevel + 1 [L69] RET waterRise() [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND TRUE \read(tmp___0) [L79] CALL changeMethaneLevel() [L902] COND FALSE !(\read(methaneLevelCritical)) [L905] methaneLevelCritical = 1 [L79] RET changeMethaneLevel() [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L102] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L204] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L289] CALL, EXPR isHighWaterSensorDry() [L952] int retValue_acc ; [L955] COND FALSE !(waterLevel < 2) [L959] retValue_acc = 0 [L960] return (retValue_acc); [L289] RET, EXPR isHighWaterSensorDry() [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L214] pumpRunning = 1 [L169] RET activatePump() [L204] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification1_spec__1() [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isMethaneLevelCritical() [L911] int retValue_acc ; [L914] retValue_acc = methaneLevelCritical [L915] return (retValue_acc); [L755] RET, EXPR isMethaneLevelCritical() [L755] tmp = isMethaneLevelCritical() [L757] COND TRUE \read(tmp) [L759] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L759] RET, EXPR isPumpRunning() [L759] tmp___0 = isPumpRunning() [L761] COND TRUE \read(tmp___0) [L763] CALL __automaton_fail() [L706] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 652 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 39.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2077 SDtfs, 3905 SDslu, 3861 SDs, 0 SdLazy, 8325 SolverSat, 1220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2312occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 1818 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...