/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:09:19,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:09:19,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:09:19,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:09:19,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:09:19,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:09:19,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:09:19,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:09:19,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:09:19,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:09:19,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:09:19,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:09:19,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:09:19,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:09:19,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:09:19,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:09:19,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:09:19,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:09:19,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:09:19,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:09:19,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:09:19,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:09:19,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:09:19,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:09:19,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:09:19,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:09:19,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:09:19,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:09:19,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:09:19,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:09:19,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:09:19,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:09:19,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:09:19,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:09:19,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:09:19,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:09:19,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:09:19,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:09:19,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:09:19,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:09:19,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:09:19,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:09:19,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:09:19,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:09:19,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:09:19,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:09:19,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:09:19,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:09:19,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:09:19,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:09:19,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:09:19,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:09:19,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:09:19,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:09:19,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:09:19,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:09:19,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:09:19,482 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:09:19,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:09:19,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:09:19,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:09:19,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:09:19,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:09:19,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:09:19,483 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:09:19,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:09:19,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:09:19,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:09:19,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:09:19,914 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:09:19,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2021-02-23 16:09:19,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96da7e819/2d8a11ce482c4205b2d1a8d914efa3f9/FLAG72acb4c4b [2021-02-23 16:09:20,719 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:09:20,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2021-02-23 16:09:20,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96da7e819/2d8a11ce482c4205b2d1a8d914efa3f9/FLAG72acb4c4b [2021-02-23 16:09:20,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96da7e819/2d8a11ce482c4205b2d1a8d914efa3f9 [2021-02-23 16:09:20,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:09:20,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:09:20,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:09:20,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:09:20,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:09:20,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:09:20" (1/1) ... [2021-02-23 16:09:20,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e47816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:20, skipping insertion in model container [2021-02-23 16:09:20,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:09:20" (1/1) ... [2021-02-23 16:09:20,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:09:20,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:09:21,233 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_product37.cil.c[12699,12712] [2021-02-23 16:09:21,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:09:21,309 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:09:21,361 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_product37.cil.c[12699,12712] [2021-02-23 16:09:21,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:09:21,429 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:09:21,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21 WrapperNode [2021-02-23 16:09:21,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:09:21,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:09:21,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:09:21,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:09:21,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... [2021-02-23 16:09:21,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... [2021-02-23 16:09:21,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... [2021-02-23 16:09:21,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... [2021-02-23 16:09:21,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... [2021-02-23 16:09:21,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... [2021-02-23 16:09:21,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... [2021-02-23 16:09:21,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:09:21,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:09:21,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:09:21,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:09:21,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:09:21,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:09:21,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:09:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:09:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:09:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:09:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:09:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:09:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:09:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:09:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:09:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:09:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:09:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:09:21,726 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:09:21,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:09:21,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:09:21,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:09:21,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:09:21,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:09:21,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:09:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:09:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:09:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:09:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:09:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:09:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:09:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:09:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:09:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:09:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:09:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:09:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:09:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:09:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:09:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:09:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:09:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:09:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:09:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:09:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:09:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:09:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:09:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:09:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:09:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:09:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:09:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:09:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:09:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:09:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:09:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:09:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:09:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:09:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:09:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:09:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:09:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:09:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:09:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:09:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:09:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:09:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:09:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:09:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:09:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:09:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:09:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:09:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:09:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:09:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:09:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:09:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:09:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:09:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:09:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:09:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:09:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:09:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:09:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:09:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:09:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:09:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:09:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:09:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:09:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:09:23,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:09:23,096 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:09:23,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:09:23 BoogieIcfgContainer [2021-02-23 16:09:23,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:09:23,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:09:23,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:09:23,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:09:23,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:09:20" (1/3) ... [2021-02-23 16:09:23,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6942e198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:09:23, skipping insertion in model container [2021-02-23 16:09:23,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:21" (2/3) ... [2021-02-23 16:09:23,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6942e198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:09:23, skipping insertion in model container [2021-02-23 16:09:23,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:09:23" (3/3) ... [2021-02-23 16:09:23,109 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2021-02-23 16:09:23,115 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:09:23,121 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:09:23,140 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:09:23,165 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:09:23,166 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:09:23,166 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:09:23,166 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:09:23,166 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:09:23,166 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:09:23,167 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:09:23,167 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:09:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states. [2021-02-23 16:09:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:09:23,210 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:23,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:23,212 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:23,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:23,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1627698146, now seen corresponding path program 1 times [2021-02-23 16:09:23,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:23,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826668147] [2021-02-23 16:09:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:23,310 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:23,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:23,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:23,985 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:24,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:24,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:24,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:24,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:24,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:24,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:24,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:24,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:24,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:24,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:24,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:24,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:09:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:24,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:24,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:24,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826668147] [2021-02-23 16:09:24,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:24,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:09:24,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465572372] [2021-02-23 16:09:24,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:09:24,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:09:24,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:09:24,202 INFO L87 Difference]: Start difference. First operand 307 states. Second operand 3 states. [2021-02-23 16:09:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:25,597 INFO L93 Difference]: Finished difference Result 473 states and 564 transitions. [2021-02-23 16:09:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:09:25,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:09:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:25,617 INFO L225 Difference]: With dead ends: 473 [2021-02-23 16:09:25,617 INFO L226 Difference]: Without dead ends: 296 [2021-02-23 16:09:25,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:09:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-02-23 16:09:25,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2021-02-23 16:09:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2021-02-23 16:09:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2021-02-23 16:09:25,775 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 147 [2021-02-23 16:09:25,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:25,776 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2021-02-23 16:09:25,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:09:25,776 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2021-02-23 16:09:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:09:25,780 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:25,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:25,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:09:25,781 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:25,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2118354520, now seen corresponding path program 1 times [2021-02-23 16:09:25,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:25,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115303933] [2021-02-23 16:09:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:25,787 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:25,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:25,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:25,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:25,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:25,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:25,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,187 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:26,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:26,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:26,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:26,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:26,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:26,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:26,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:26,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:26,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:26,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:26,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:09:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:26,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:26,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:09:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:26,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:26,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:26,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115303933] [2021-02-23 16:09:26,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:26,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:09:26,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298374487] [2021-02-23 16:09:26,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:09:26,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:26,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:09:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:09:26,290 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand 4 states. [2021-02-23 16:09:26,874 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:27,719 INFO L93 Difference]: Finished difference Result 389 states and 438 transitions. [2021-02-23 16:09:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:09:27,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:09:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:27,724 INFO L225 Difference]: With dead ends: 389 [2021-02-23 16:09:27,724 INFO L226 Difference]: Without dead ends: 279 [2021-02-23 16:09:27,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:09:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-23 16:09:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2021-02-23 16:09:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-23 16:09:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-02-23 16:09:27,850 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 148 [2021-02-23 16:09:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:27,851 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-02-23 16:09:27,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:09:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-02-23 16:09:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:09:27,853 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:27,853 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] [2021-02-23 16:09:27,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:09:27,854 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1206642817, now seen corresponding path program 1 times [2021-02-23 16:09:27,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:27,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670055425] [2021-02-23 16:09:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:27,859 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:27,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:27,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:27,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:27,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,202 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:28,313 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:09:28,314 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:09:28,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:09:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:09:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:28,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:28,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:28,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670055425] [2021-02-23 16:09:28,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:28,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:09:28,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645357492] [2021-02-23 16:09:28,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:09:28,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:28,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:09:28,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:09:28,413 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 9 states. [2021-02-23 16:09:29,046 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:29,367 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:29,628 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:29,884 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:30,163 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:30,421 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:31,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:31,754 INFO L93 Difference]: Finished difference Result 409 states and 463 transitions. [2021-02-23 16:09:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:09:31,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:09:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:31,758 INFO L225 Difference]: With dead ends: 409 [2021-02-23 16:09:31,759 INFO L226 Difference]: Without dead ends: 279 [2021-02-23 16:09:31,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:09:31,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-23 16:09:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2021-02-23 16:09:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-23 16:09:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2021-02-23 16:09:31,910 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 157 [2021-02-23 16:09:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:31,912 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2021-02-23 16:09:31,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:09:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2021-02-23 16:09:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 16:09:31,918 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:31,918 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] [2021-02-23 16:09:31,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:09:31,919 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:31,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2129969252, now seen corresponding path program 1 times [2021-02-23 16:09:31,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:31,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020045056] [2021-02-23 16:09:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:31,925 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,352 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:09:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:09:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:09:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:32,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020045056] [2021-02-23 16:09:32,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:32,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:09:32,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053307079] [2021-02-23 16:09:32,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:09:32,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:32,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:09:32,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:09:32,549 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 6 states. [2021-02-23 16:09:33,091 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:34,528 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:35,246 INFO L93 Difference]: Finished difference Result 540 states and 618 transitions. [2021-02-23 16:09:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:09:35,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-23 16:09:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:35,251 INFO L225 Difference]: With dead ends: 540 [2021-02-23 16:09:35,251 INFO L226 Difference]: Without dead ends: 410 [2021-02-23 16:09:35,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:09:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-02-23 16:09:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 351. [2021-02-23 16:09:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2021-02-23 16:09:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 378 transitions. [2021-02-23 16:09:35,402 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 378 transitions. Word has length 170 [2021-02-23 16:09:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:35,403 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 378 transitions. [2021-02-23 16:09:35,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:09:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 378 transitions. [2021-02-23 16:09:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-23 16:09:35,406 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:35,406 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] [2021-02-23 16:09:35,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:09:35,407 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash -711714552, now seen corresponding path program 1 times [2021-02-23 16:09:35,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:35,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134255469] [2021-02-23 16:09:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:35,411 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,737 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:09:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-23 16:09:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:09:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:35,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:35,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:35,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134255469] [2021-02-23 16:09:35,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:35,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:09:35,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303099351] [2021-02-23 16:09:35,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:09:35,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:35,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:09:35,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:09:35,960 INFO L87 Difference]: Start difference. First operand 351 states and 378 transitions. Second operand 9 states. [2021-02-23 16:09:36,480 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:37,890 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:38,194 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:38,469 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:38,760 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:39,025 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:39,305 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:39,575 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:39,951 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:41,032 INFO L93 Difference]: Finished difference Result 877 states and 1013 transitions. [2021-02-23 16:09:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:09:41,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2021-02-23 16:09:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:41,038 INFO L225 Difference]: With dead ends: 877 [2021-02-23 16:09:41,038 INFO L226 Difference]: Without dead ends: 641 [2021-02-23 16:09:41,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:09:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-02-23 16:09:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 550. [2021-02-23 16:09:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2021-02-23 16:09:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 599 transitions. [2021-02-23 16:09:41,312 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 599 transitions. Word has length 194 [2021-02-23 16:09:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:41,313 INFO L480 AbstractCegarLoop]: Abstraction has 550 states and 599 transitions. [2021-02-23 16:09:41,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:09:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 599 transitions. [2021-02-23 16:09:41,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-23 16:09:41,316 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:41,317 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] [2021-02-23 16:09:41,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:09:41,317 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:41,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:41,318 INFO L82 PathProgramCache]: Analyzing trace with hash 539368296, now seen corresponding path program 1 times [2021-02-23 16:09:41,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:41,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604169866] [2021-02-23 16:09:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:41,321 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,664 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:09:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:09:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:09:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:41,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:41,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:41,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:41,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604169866] [2021-02-23 16:09:41,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:41,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:09:41,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956949648] [2021-02-23 16:09:41,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:09:41,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:41,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:09:41,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:09:41,874 INFO L87 Difference]: Start difference. First operand 550 states and 599 transitions. Second operand 10 states. [2021-02-23 16:09:42,417 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:43,851 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:44,147 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:44,409 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:44,684 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:44,968 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:45,268 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:45,538 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:45,845 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:46,712 INFO L93 Difference]: Finished difference Result 707 states and 821 transitions. [2021-02-23 16:09:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:09:46,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2021-02-23 16:09:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:46,717 INFO L225 Difference]: With dead ends: 707 [2021-02-23 16:09:46,718 INFO L226 Difference]: Without dead ends: 704 [2021-02-23 16:09:46,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:09:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-02-23 16:09:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 550. [2021-02-23 16:09:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2021-02-23 16:09:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 598 transitions. [2021-02-23 16:09:46,973 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 598 transitions. Word has length 199 [2021-02-23 16:09:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:46,973 INFO L480 AbstractCegarLoop]: Abstraction has 550 states and 598 transitions. [2021-02-23 16:09:46,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:09:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 598 transitions. [2021-02-23 16:09:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 16:09:46,977 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:46,977 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] [2021-02-23 16:09:46,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:09:46,978 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1624528255, now seen corresponding path program 1 times [2021-02-23 16:09:46,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:46,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796277468] [2021-02-23 16:09:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:46,982 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,226 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:47,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:09:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:47,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:47,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:47,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:47,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:47,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:09:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:09:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:47,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:47,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:47,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796277468] [2021-02-23 16:09:47,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:47,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:09:47,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553208154] [2021-02-23 16:09:47,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:09:47,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:47,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:09:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:09:47,476 INFO L87 Difference]: Start difference. First operand 550 states and 598 transitions. Second operand 10 states. [2021-02-23 16:09:48,632 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:48,915 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:49,209 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:09:49,504 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:49,794 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:50,060 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:51,256 INFO L93 Difference]: Finished difference Result 1149 states and 1325 transitions. [2021-02-23 16:09:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:09:51,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2021-02-23 16:09:51,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:51,267 INFO L225 Difference]: With dead ends: 1149 [2021-02-23 16:09:51,267 INFO L226 Difference]: Without dead ends: 714 [2021-02-23 16:09:51,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:09:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-02-23 16:09:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 566. [2021-02-23 16:09:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-02-23 16:09:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 614 transitions. [2021-02-23 16:09:51,495 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 614 transitions. Word has length 200 [2021-02-23 16:09:51,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:51,496 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 614 transitions. [2021-02-23 16:09:51,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:09:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 614 transitions. [2021-02-23 16:09:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 16:09:51,499 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:51,500 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] [2021-02-23 16:09:51,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:09:51,500 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:51,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1696568865, now seen corresponding path program 1 times [2021-02-23 16:09:51,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:51,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606539425] [2021-02-23 16:09:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:51,504 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:51,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:51,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,768 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:51,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:09:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:51,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:51,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:51,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:51,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:09:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:09:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:51,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:51,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:51,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606539425] [2021-02-23 16:09:51,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:51,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:09:51,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765641773] [2021-02-23 16:09:51,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:09:51,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:09:51,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:09:51,986 INFO L87 Difference]: Start difference. First operand 566 states and 614 transitions. Second operand 13 states. [2021-02-23 16:09:52,588 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:52,881 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:53,164 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:53,432 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:53,703 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:54,484 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:54,765 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:55,050 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:55,332 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:55,593 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:56,953 INFO L93 Difference]: Finished difference Result 1187 states and 1379 transitions. [2021-02-23 16:09:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:09:56,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2021-02-23 16:09:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:56,959 INFO L225 Difference]: With dead ends: 1187 [2021-02-23 16:09:56,959 INFO L226 Difference]: Without dead ends: 736 [2021-02-23 16:09:56,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-23 16:09:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-02-23 16:09:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 578. [2021-02-23 16:09:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2021-02-23 16:09:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 626 transitions. [2021-02-23 16:09:57,238 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 626 transitions. Word has length 200 [2021-02-23 16:09:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:57,241 INFO L480 AbstractCegarLoop]: Abstraction has 578 states and 626 transitions. [2021-02-23 16:09:57,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:09:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 626 transitions. [2021-02-23 16:09:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 16:09:57,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:57,247 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] [2021-02-23 16:09:57,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:09:57,248 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash 56274884, now seen corresponding path program 1 times [2021-02-23 16:09:57,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:57,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826234698] [2021-02-23 16:09:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:57,252 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:57,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:57,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:57,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:57,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:57,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,551 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:57,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:09:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:57,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:57,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:09:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:09:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:57,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:57,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:57,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826234698] [2021-02-23 16:09:57,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:57,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:09:57,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162518259] [2021-02-23 16:09:57,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:09:57,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:57,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:09:57,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:09:57,732 INFO L87 Difference]: Start difference. First operand 578 states and 626 transitions. Second operand 7 states. [2021-02-23 16:09:58,204 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:58,790 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:01,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:01,201 INFO L93 Difference]: Finished difference Result 1632 states and 1943 transitions. [2021-02-23 16:10:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:10:01,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2021-02-23 16:10:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:01,211 INFO L225 Difference]: With dead ends: 1632 [2021-02-23 16:10:01,211 INFO L226 Difference]: Without dead ends: 1169 [2021-02-23 16:10:01,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:10:01,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-02-23 16:10:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 996. [2021-02-23 16:10:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2021-02-23 16:10:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1118 transitions. [2021-02-23 16:10:01,619 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1118 transitions. Word has length 200 [2021-02-23 16:10:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:01,620 INFO L480 AbstractCegarLoop]: Abstraction has 996 states and 1118 transitions. [2021-02-23 16:10:01,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:10:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1118 transitions. [2021-02-23 16:10:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:10:01,622 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:01,623 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] [2021-02-23 16:10:01,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:10:01,623 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:01,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:01,624 INFO L82 PathProgramCache]: Analyzing trace with hash -726164035, now seen corresponding path program 1 times [2021-02-23 16:10:01,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:01,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832509476] [2021-02-23 16:10:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:01,627 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:10:01,702 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:10:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:10:01,773 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:10:01,998 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:10:01,998 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:10:02,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:10:02,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:10:02 BoogieIcfgContainer [2021-02-23 16:10:02,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:10:02,042 INFO L168 Benchmark]: Toolchain (without parser) took 41282.81 ms. Allocated memory was 174.1 MB in the beginning and 580.9 MB in the end (delta: 406.8 MB). Free memory was 149.9 MB in the beginning and 441.3 MB in the end (delta: -291.3 MB). Peak memory consumption was 117.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:02,043 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 174.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:10:02,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.09 ms. Allocated memory is still 174.1 MB. Free memory was 148.7 MB in the beginning and 127.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:02,043 INFO L168 Benchmark]: Boogie Preprocessor took 125.95 ms. Allocated memory is still 174.1 MB. Free memory was 127.7 MB in the beginning and 123.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:02,043 INFO L168 Benchmark]: RCFGBuilder took 1538.15 ms. Allocated memory was 174.1 MB in the beginning and 231.7 MB in the end (delta: 57.7 MB). Free memory was 123.9 MB in the beginning and 207.5 MB in the end (delta: -83.7 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:02,044 INFO L168 Benchmark]: TraceAbstraction took 38940.23 ms. Allocated memory was 231.7 MB in the beginning and 580.9 MB in the end (delta: 349.2 MB). Free memory was 207.5 MB in the beginning and 441.3 MB in the end (delta: -233.7 MB). Peak memory consumption was 115.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:02,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 174.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 658.09 ms. Allocated memory is still 174.1 MB. Free memory was 148.7 MB in the beginning and 127.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 125.95 ms. Allocated memory is still 174.1 MB. Free memory was 127.7 MB in the beginning and 123.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1538.15 ms. Allocated memory was 174.1 MB in the beginning and 231.7 MB in the end (delta: 57.7 MB). Free memory was 123.9 MB in the beginning and 207.5 MB in the end (delta: -83.7 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38940.23 ms. Allocated memory was 231.7 MB in the beginning and 580.9 MB in the end (delta: 349.2 MB). Free memory was 207.5 MB in the beginning and 441.3 MB in the end (delta: -233.7 MB). Peak memory consumption was 115.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L489] int retValue_acc ; [L490] int tmp ; [L494] FCALL select_helpers() [L495] FCALL select_features() [L496] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L496] RET, EXPR valid_product() [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) [L500] FCALL setup() [L501] CALL runTest() [L480] CALL test() [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 [L778] COND TRUE 1 [L780] COND TRUE splverifierCounter < 4 [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) [L790] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L790] RET waterRise() [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) [L800] CALL changeMethaneLevel() [L864] COND FALSE !(\read(methaneLevelCritical)) [L867] methaneLevelCritical = 1 [L800] RET changeMethaneLevel() [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L821] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND TRUE \read(systemActive) [L606] CALL processEnvironment() [L652] int tmp ; [L655] COND FALSE !(\read(pumpRunning)) [L670] CALL processEnvironment__wrappee__highWaterSensor() [L626] int tmp ; [L629] COND TRUE ! pumpRunning [L631] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L914] int retValue_acc ; [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] return (retValue_acc); [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); [L631] RET, EXPR isHighWaterLevel() [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L635] CALL activatePump() [L680] pumpRunning = 1 [L635] RET activatePump() [L670] RET processEnvironment__wrappee__highWaterSensor() [L606] RET processEnvironment() [L612] CALL __utac_acc__Specification1_spec__1() [L516] int tmp ; [L517] int tmp___0 ; [L521] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L521] RET, EXPR isMethaneLevelCritical() [L521] tmp = isMethaneLevelCritical() [L523] COND TRUE \read(tmp) [L525] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); [L525] RET, EXPR isPumpRunning() [L525] tmp___0 = isPumpRunning() [L527] COND TRUE \read(tmp___0) [L529] CALL __automaton_fail() [L545] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 31.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2168 SDtfs, 3625 SDslu, 3941 SDs, 0 SdLazy, 7542 SolverSat, 1056 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=996occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 892 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...