/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 00:43:38,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 00:43:38,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 00:43:38,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 00:43:38,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 00:43:38,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 00:43:38,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 00:43:38,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 00:43:38,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 00:43:38,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 00:43:38,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 00:43:38,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 00:43:38,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 00:43:38,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 00:43:38,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 00:43:38,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 00:43:38,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 00:43:38,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 00:43:38,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 00:43:38,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 00:43:38,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 00:43:38,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 00:43:38,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 00:43:38,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 00:43:38,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 00:43:38,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 00:43:38,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 00:43:38,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 00:43:38,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 00:43:38,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 00:43:38,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 00:43:38,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 00:43:38,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 00:43:38,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 00:43:38,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 00:43:38,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 00:43:38,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 00:43:38,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 00:43:38,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 00:43:38,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 00:43:38,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 00:43:38,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 00:43:38,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 00:43:38,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 00:43:38,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 00:43:38,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 00:43:38,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 00:43:38,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 00:43:38,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 00:43:38,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 00:43:38,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 00:43:38,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 00:43:38,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 00:43:38,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 00:43:38,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 00:43:38,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 00:43:38,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 00:43:38,584 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 00:43:38,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 00:43:38,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 00:43:38,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:43:38,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 00:43:38,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 00:43:38,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 00:43:38,586 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 00:43:38,586 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 00:43:38,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 00:43:38,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 00:43:38,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 00:43:38,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 00:43:38,970 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 00:43:38,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2021-02-22 00:43:39,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b44924b/a1581c6388724f72a82cd9126f495705/FLAG55a2d2326 [2021-02-22 00:43:39,832 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 00:43:39,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2021-02-22 00:43:39,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b44924b/a1581c6388724f72a82cd9126f495705/FLAG55a2d2326 [2021-02-22 00:43:40,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b44924b/a1581c6388724f72a82cd9126f495705 [2021-02-22 00:43:40,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 00:43:40,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 00:43:40,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 00:43:40,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 00:43:40,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 00:43:40,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf4e895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40, skipping insertion in model container [2021-02-22 00:43:40,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 00:43:40,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 00:43:40,320 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_product36.cil.c[1281,1294] [2021-02-22 00:43:40,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:43:40,460 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 00:43:40,476 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_product36.cil.c[1281,1294] [2021-02-22 00:43:40,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:43:40,587 INFO L208 MainTranslator]: Completed translation [2021-02-22 00:43:40,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40 WrapperNode [2021-02-22 00:43:40,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 00:43:40,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 00:43:40,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 00:43:40,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 00:43:40,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... [2021-02-22 00:43:40,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 00:43:40,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 00:43:40,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 00:43:40,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 00:43:40,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:43:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 00:43:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 00:43:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 00:43:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 00:43:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 00:43:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 00:43:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 00:43:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 00:43:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 00:43:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 00:43:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 00:43:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 00:43:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 00:43:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 00:43:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 00:43:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 00:43:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 00:43:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 00:43:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 00:43:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 00:43:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 00:43:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 00:43:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 00:43:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 00:43:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 00:43:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 00:43:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 00:43:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 00:43:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 00:43:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 00:43:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 00:43:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 00:43:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 00:43:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 00:43:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:43:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 00:43:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 00:43:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 00:43:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 00:43:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 00:43:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 00:43:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 00:43:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 00:43:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 00:43:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 00:43:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 00:43:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 00:43:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 00:43:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 00:43:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 00:43:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 00:43:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 00:43:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 00:43:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 00:43:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 00:43:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 00:43:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 00:43:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 00:43:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-22 00:43:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 00:43:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 00:43:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 00:43:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 00:43:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 00:43:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 00:43:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 00:43:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 00:43:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 00:43:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 00:43:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 00:43:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 00:43:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 00:43:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 00:43:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 00:43:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 00:43:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 00:43:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 00:43:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 00:43:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 00:43:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 00:43:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 00:43:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 00:43:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 00:43:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 00:43:40,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 00:43:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 00:43:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 00:43:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 00:43:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 00:43:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 00:43:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 00:43:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 00:43:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 00:43:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 00:43:42,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 00:43:42,530 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 00:43:42,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:43:42 BoogieIcfgContainer [2021-02-22 00:43:42,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 00:43:42,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 00:43:42,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 00:43:42,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 00:43:42,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 12:43:40" (1/3) ... [2021-02-22 00:43:42,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54deb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:43:42, skipping insertion in model container [2021-02-22 00:43:42,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:43:40" (2/3) ... [2021-02-22 00:43:42,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54deb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:43:42, skipping insertion in model container [2021-02-22 00:43:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:43:42" (3/3) ... [2021-02-22 00:43:42,543 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2021-02-22 00:43:42,550 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 00:43:42,555 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 00:43:42,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 00:43:42,603 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 00:43:42,604 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 00:43:42,604 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 00:43:42,604 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 00:43:42,604 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 00:43:42,604 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 00:43:42,605 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 00:43:42,605 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 00:43:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2021-02-22 00:43:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-22 00:43:42,650 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:42,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:43:42,652 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:42,659 INFO L82 PathProgramCache]: Analyzing trace with hash -85306297, now seen corresponding path program 1 times [2021-02-22 00:43:42,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:42,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292503858] [2021-02-22 00:43:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:42,750 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,532 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:43,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:43:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 00:43:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:43,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:43,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:43,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292503858] [2021-02-22 00:43:43,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:43,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 00:43:43,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947252722] [2021-02-22 00:43:43,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 00:43:43,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:43,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 00:43:43,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 00:43:43,845 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 3 states. [2021-02-22 00:43:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:45,560 INFO L93 Difference]: Finished difference Result 454 states and 540 transitions. [2021-02-22 00:43:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 00:43:45,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-22 00:43:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:45,580 INFO L225 Difference]: With dead ends: 454 [2021-02-22 00:43:45,580 INFO L226 Difference]: Without dead ends: 287 [2021-02-22 00:43:45,586 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 [2021-02-22 00:43:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-22 00:43:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 245. [2021-02-22 00:43:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-22 00:43:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-02-22 00:43:45,759 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 147 [2021-02-22 00:43:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:45,760 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-02-22 00:43:45,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 00:43:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-02-22 00:43:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-22 00:43:45,765 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:45,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:43:45,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 00:43:45,766 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:45,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:45,766 INFO L82 PathProgramCache]: Analyzing trace with hash -756337341, now seen corresponding path program 1 times [2021-02-22 00:43:45,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:45,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442911454] [2021-02-22 00:43:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:45,772 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:45,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:45,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:45,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:45,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:45,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:45,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,222 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:46,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 00:43:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 00:43:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:46,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:46,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:46,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442911454] [2021-02-22 00:43:46,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:46,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 00:43:46,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713279682] [2021-02-22 00:43:46,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 00:43:46,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:46,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 00:43:46,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 00:43:46,361 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 4 states. [2021-02-22 00:43:47,160 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:48,101 INFO L93 Difference]: Finished difference Result 357 states and 400 transitions. [2021-02-22 00:43:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 00:43:48,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-22 00:43:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:48,110 INFO L225 Difference]: With dead ends: 357 [2021-02-22 00:43:48,110 INFO L226 Difference]: Without dead ends: 270 [2021-02-22 00:43:48,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 00:43:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-22 00:43:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-02-22 00:43:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-22 00:43:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 251 transitions. [2021-02-22 00:43:48,210 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 251 transitions. Word has length 148 [2021-02-22 00:43:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:48,211 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 251 transitions. [2021-02-22 00:43:48,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 00:43:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 251 transitions. [2021-02-22 00:43:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-22 00:43:48,213 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:48,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:43:48,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 00:43:48,214 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1952058394, now seen corresponding path program 1 times [2021-02-22 00:43:48,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:48,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529859118] [2021-02-22 00:43:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:48,219 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:48,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:48,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:43:48,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,710 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:48,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:48,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:43:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 00:43:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 00:43:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 00:43:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:48,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:48,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:48,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529859118] [2021-02-22 00:43:48,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:48,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:43:48,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493742111] [2021-02-22 00:43:48,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:43:48,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:43:48,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:43:48,885 INFO L87 Difference]: Start difference. First operand 235 states and 251 transitions. Second operand 10 states. [2021-02-22 00:43:49,518 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:49,963 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:43:50,392 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 00:43:50,757 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:51,178 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:43:51,566 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:52,645 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:43:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:43:54,941 INFO L93 Difference]: Finished difference Result 626 states and 727 transitions. [2021-02-22 00:43:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 00:43:54,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-22 00:43:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:43:54,948 INFO L225 Difference]: With dead ends: 626 [2021-02-22 00:43:54,949 INFO L226 Difference]: Without dead ends: 506 [2021-02-22 00:43:54,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-22 00:43:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-02-22 00:43:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 403. [2021-02-22 00:43:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-22 00:43:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 445 transitions. [2021-02-22 00:43:55,157 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 445 transitions. Word has length 161 [2021-02-22 00:43:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:43:55,157 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 445 transitions. [2021-02-22 00:43:55,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:43:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 445 transitions. [2021-02-22 00:43:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-22 00:43:55,161 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:43:55,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:43:55,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 00:43:55,161 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:43:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:43:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1305806755, now seen corresponding path program 1 times [2021-02-22 00:43:55,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:43:55,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296285453] [2021-02-22 00:43:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:43:55,166 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:43:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,721 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:43:55,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:43:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:43:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:43:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:43:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:43:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 00:43:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-22 00:43:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:43:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-22 00:43:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:43:55,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:43:55,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:43:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:43:55,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296285453] [2021-02-22 00:43:55,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:43:55,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 00:43:55,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492198220] [2021-02-22 00:43:55,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 00:43:55,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:43:55,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 00:43:55,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 00:43:55,998 INFO L87 Difference]: Start difference. First operand 403 states and 445 transitions. Second operand 9 states. [2021-02-22 00:43:56,657 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:58,222 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:58,637 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:43:59,117 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:43:59,519 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:43:59,907 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:00,291 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:00,684 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:01,226 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:02,343 INFO L93 Difference]: Finished difference Result 1089 states and 1301 transitions. [2021-02-22 00:44:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 00:44:02,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-22 00:44:02,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:02,351 INFO L225 Difference]: With dead ends: 1089 [2021-02-22 00:44:02,352 INFO L226 Difference]: Without dead ends: 801 [2021-02-22 00:44:02,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-22 00:44:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-02-22 00:44:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 652. [2021-02-22 00:44:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2021-02-22 00:44:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 731 transitions. [2021-02-22 00:44:02,691 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 731 transitions. Word has length 166 [2021-02-22 00:44:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:02,692 INFO L480 AbstractCegarLoop]: Abstraction has 652 states and 731 transitions. [2021-02-22 00:44:02,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 00:44:02,692 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 731 transitions. [2021-02-22 00:44:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-22 00:44:02,696 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:02,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:02,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 00:44:02,697 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:02,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:02,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1497435342, now seen corresponding path program 1 times [2021-02-22 00:44:02,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:02,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787462448] [2021-02-22 00:44:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:02,701 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:02,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:02,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:02,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,101 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-22 00:44:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 00:44:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-22 00:44:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:03,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:03,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:03,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:03,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:03,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787462448] [2021-02-22 00:44:03,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:03,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 00:44:03,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730203277] [2021-02-22 00:44:03,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 00:44:03,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:03,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 00:44:03,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 00:44:03,381 INFO L87 Difference]: Start difference. First operand 652 states and 731 transitions. Second operand 10 states. [2021-02-22 00:44:04,079 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:05,648 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:06,026 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:06,478 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:06,886 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 00:44:07,272 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:08,035 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:08,412 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:08,932 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:10,074 INFO L93 Difference]: Finished difference Result 1724 states and 2098 transitions. [2021-02-22 00:44:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 00:44:10,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-22 00:44:10,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:10,087 INFO L225 Difference]: With dead ends: 1724 [2021-02-22 00:44:10,087 INFO L226 Difference]: Without dead ends: 1187 [2021-02-22 00:44:10,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-22 00:44:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-02-22 00:44:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 942. [2021-02-22 00:44:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2021-02-22 00:44:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1078 transitions. [2021-02-22 00:44:10,604 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1078 transitions. Word has length 171 [2021-02-22 00:44:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:10,605 INFO L480 AbstractCegarLoop]: Abstraction has 942 states and 1078 transitions. [2021-02-22 00:44:10,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 00:44:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1078 transitions. [2021-02-22 00:44:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-22 00:44:10,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:10,610 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] [2021-02-22 00:44:10,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 00:44:10,611 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:10,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:10,611 INFO L82 PathProgramCache]: Analyzing trace with hash 405362386, now seen corresponding path program 1 times [2021-02-22 00:44:10,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:10,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193195036] [2021-02-22 00:44:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:10,615 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:10,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:10,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:10,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:10,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,017 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:11,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:11,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:11,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:11,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-22 00:44:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-22 00:44:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:11,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:11,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:11,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193195036] [2021-02-22 00:44:11,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:11,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 00:44:11,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788665688] [2021-02-22 00:44:11,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 00:44:11,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:11,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 00:44:11,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-22 00:44:11,320 INFO L87 Difference]: Start difference. First operand 942 states and 1078 transitions. Second operand 11 states. [2021-02-22 00:44:13,014 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:13,396 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:44:13,814 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-22 00:44:14,192 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:14,580 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:14,939 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:17,011 INFO L93 Difference]: Finished difference Result 2373 states and 2974 transitions. [2021-02-22 00:44:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 00:44:17,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2021-02-22 00:44:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:17,023 INFO L225 Difference]: With dead ends: 2373 [2021-02-22 00:44:17,023 INFO L226 Difference]: Without dead ends: 1546 [2021-02-22 00:44:17,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-22 00:44:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-02-22 00:44:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 980. [2021-02-22 00:44:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2021-02-22 00:44:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1116 transitions. [2021-02-22 00:44:17,422 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1116 transitions. Word has length 199 [2021-02-22 00:44:17,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:17,423 INFO L480 AbstractCegarLoop]: Abstraction has 980 states and 1116 transitions. [2021-02-22 00:44:17,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 00:44:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1116 transitions. [2021-02-22 00:44:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-22 00:44:17,427 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:17,427 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] [2021-02-22 00:44:17,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 00:44:17,428 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:17,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1016878478, now seen corresponding path program 1 times [2021-02-22 00:44:17,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:17,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904272429] [2021-02-22 00:44:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:17,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:17,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:17,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,814 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:17,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 00:44:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:17,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:17,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:17,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:17,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:17,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:17,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-22 00:44:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-22 00:44:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:18,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:18,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:18,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904272429] [2021-02-22 00:44:18,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:18,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 00:44:18,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444204129] [2021-02-22 00:44:18,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 00:44:18,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:18,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 00:44:18,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-22 00:44:18,071 INFO L87 Difference]: Start difference. First operand 980 states and 1116 transitions. Second operand 14 states. [2021-02-22 00:44:18,779 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 00:44:19,183 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 00:44:19,594 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:19,984 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:20,334 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:21,470 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:21,845 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:22,259 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:22,694 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 00:44:23,093 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 00:44:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:24,898 INFO L93 Difference]: Finished difference Result 2455 states and 3115 transitions. [2021-02-22 00:44:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 00:44:24,899 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2021-02-22 00:44:24,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:24,910 INFO L225 Difference]: With dead ends: 2455 [2021-02-22 00:44:24,910 INFO L226 Difference]: Without dead ends: 1590 [2021-02-22 00:44:24,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-22 00:44:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-02-22 00:44:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1004. [2021-02-22 00:44:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2021-02-22 00:44:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1140 transitions. [2021-02-22 00:44:25,319 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1140 transitions. Word has length 199 [2021-02-22 00:44:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:25,319 INFO L480 AbstractCegarLoop]: Abstraction has 1004 states and 1140 transitions. [2021-02-22 00:44:25,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 00:44:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1140 transitions. [2021-02-22 00:44:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-22 00:44:25,323 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:25,323 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] [2021-02-22 00:44:25,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 00:44:25,324 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:25,324 INFO L82 PathProgramCache]: Analyzing trace with hash -808529707, now seen corresponding path program 1 times [2021-02-22 00:44:25,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:25,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095650434] [2021-02-22 00:44:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:25,327 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:25,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:25,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:25,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:25,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:44:25,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,714 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 00:44:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 00:44:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 00:44:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 00:44:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 00:44:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 00:44:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 00:44:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 00:44:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 00:44:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 00:44:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 00:44:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 00:44:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:44:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 00:44:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 00:44:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 00:44:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-22 00:44:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-22 00:44:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:44:25,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 00:44:25,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 00:44:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 00:44:25,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095650434] [2021-02-22 00:44:25,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 00:44:25,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 00:44:25,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104803272] [2021-02-22 00:44:25,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 00:44:25,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 00:44:25,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 00:44:25,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 00:44:25,910 INFO L87 Difference]: Start difference. First operand 1004 states and 1140 transitions. Second operand 8 states. [2021-02-22 00:44:26,493 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:27,215 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 00:44:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 00:44:30,789 INFO L93 Difference]: Finished difference Result 3932 states and 5021 transitions. [2021-02-22 00:44:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-22 00:44:30,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2021-02-22 00:44:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 00:44:30,808 INFO L225 Difference]: With dead ends: 3932 [2021-02-22 00:44:30,808 INFO L226 Difference]: Without dead ends: 3043 [2021-02-22 00:44:30,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-02-22 00:44:30,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-02-22 00:44:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2144. [2021-02-22 00:44:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2144 states. [2021-02-22 00:44:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 2468 transitions. [2021-02-22 00:44:31,800 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 2468 transitions. Word has length 199 [2021-02-22 00:44:31,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 00:44:31,801 INFO L480 AbstractCegarLoop]: Abstraction has 2144 states and 2468 transitions. [2021-02-22 00:44:31,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 00:44:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 2468 transitions. [2021-02-22 00:44:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-22 00:44:31,806 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:44:31,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:44:31,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 00:44:31,807 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:44:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:44:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash -476325554, now seen corresponding path program 1 times [2021-02-22 00:44:31,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:44:31,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888989352] [2021-02-22 00:44:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:44:31,810 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 00:44:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:44:31,879 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:44:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:44:31,946 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:44:32,154 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 00:44:32,154 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 00:44:32,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 00:44:32,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 12:44:32 BoogieIcfgContainer [2021-02-22 00:44:32,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 00:44:32,182 INFO L168 Benchmark]: Toolchain (without parser) took 52084.25 ms. Allocated memory was 151.0 MB in the beginning and 897.6 MB in the end (delta: 746.6 MB). Free memory was 126.0 MB in the beginning and 543.4 MB in the end (delta: -417.4 MB). Peak memory consumption was 330.2 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:32,183 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 00:44:32,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.50 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 103.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:32,183 INFO L168 Benchmark]: Boogie Preprocessor took 146.37 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 99.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:32,183 INFO L168 Benchmark]: RCFGBuilder took 1796.71 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 99.8 MB in the beginning and 157.3 MB in the end (delta: -57.5 MB). Peak memory consumption was 37.4 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:32,184 INFO L168 Benchmark]: TraceAbstraction took 49646.42 ms. Allocated memory was 205.5 MB in the beginning and 897.6 MB in the end (delta: 692.1 MB). Free memory was 156.8 MB in the beginning and 543.4 MB in the end (delta: -386.6 MB). Peak memory consumption was 305.4 MB. Max. memory is 8.0 GB. [2021-02-22 00:44:32,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 476.50 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 103.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 146.37 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 99.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1796.71 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 99.8 MB in the beginning and 157.3 MB in the end (delta: -57.5 MB). Peak memory consumption was 37.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 49646.42 ms. Allocated memory was 205.5 MB in the beginning and 897.6 MB in the end (delta: 692.1 MB). Free memory was 156.8 MB in the beginning and 543.4 MB in the end (delta: -386.6 MB). Peak memory consumption was 305.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L241] int waterLevel = 1; [L242] int methaneLevelCritical = 0; [L612] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L835] int cleanupTimeShifts = 4; [L908] int retValue_acc ; [L909] int tmp ; [L913] FCALL select_helpers() [L914] FCALL select_features() [L915] CALL, EXPR valid_product() [L434] int retValue_acc ; [L437] retValue_acc = 1 [L438] return (retValue_acc); [L915] RET, EXPR valid_product() [L915] tmp = valid_product() [L917] COND TRUE \read(tmp) [L919] FCALL setup() [L920] CALL runTest() [L902] CALL test() [L337] int splverifierCounter ; [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L341] int tmp___2 ; [L344] splverifierCounter = 0 [L346] COND TRUE 1 [L348] COND TRUE splverifierCounter < 4 [L354] tmp = __VERIFIER_nondet_int() [L356] COND TRUE \read(tmp) [L358] CALL waterRise() [L259] COND TRUE waterLevel < 2 [L260] waterLevel = waterLevel + 1 [L358] RET waterRise() [L364] tmp___0 = __VERIFIER_nondet_int() [L366] COND TRUE \read(tmp___0) [L368] CALL changeMethaneLevel() [L271] COND FALSE !(\read(methaneLevelCritical)) [L274] methaneLevelCritical = 1 [L368] RET changeMethaneLevel() [L374] tmp___2 = __VERIFIER_nondet_int() [L376] COND TRUE \read(tmp___2) [L378] CALL startSystem() [L233] systemActive = 1 [L378] RET startSystem() [L393] CALL timeShift() [L70] COND FALSE !(\read(pumpRunning)) [L77] COND TRUE \read(systemActive) [L79] CALL processEnvironment() [L99] int tmp ; [L102] COND TRUE ! pumpRunning [L104] CALL, EXPR isHighWaterLevel() [L196] int retValue_acc ; [L197] int tmp ; [L198] int tmp___0 ; [L202] CALL, EXPR isHighWaterSensorDry() [L321] int retValue_acc ; [L324] COND FALSE !(waterLevel < 2) [L328] retValue_acc = 0 [L329] return (retValue_acc); [L202] RET, EXPR isHighWaterSensorDry() [L202] tmp = isHighWaterSensorDry() [L204] COND FALSE !(\read(tmp)) [L207] tmp___0 = 1 [L209] retValue_acc = tmp___0 [L210] return (retValue_acc); [L104] RET, EXPR isHighWaterLevel() [L104] tmp = isHighWaterLevel() [L106] COND TRUE \read(tmp) [L108] CALL activatePump() [L127] pumpRunning = 1 [L108] RET activatePump() [L79] RET processEnvironment() [L85] CALL __utac_acc__Specification1_spec__1() [L810] int tmp ; [L811] int tmp___0 ; [L815] CALL, EXPR isMethaneLevelCritical() [L280] int retValue_acc ; [L283] retValue_acc = methaneLevelCritical [L284] return (retValue_acc); [L815] RET, EXPR isMethaneLevelCritical() [L815] tmp = isMethaneLevelCritical() [L817] COND TRUE \read(tmp) [L819] CALL, EXPR isPumpRunning() [L151] int retValue_acc ; [L154] retValue_acc = pumpRunning [L155] return (retValue_acc); [L819] RET, EXPR isPumpRunning() [L819] tmp___0 = isPumpRunning() [L821] COND TRUE \read(tmp___0) [L823] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 40.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1909 SDtfs, 5193 SDslu, 4318 SDs, 0 SdLazy, 7975 SolverSat, 1862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2144occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2625 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...