/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:58:08,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:58:08,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:58:08,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:58:08,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:58:08,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:58:08,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:58:08,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:58:08,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:58:08,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:58:08,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:58:08,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:58:08,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:58:08,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:58:08,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:58:08,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:58:08,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:58:08,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:58:08,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:58:08,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:58:08,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:58:08,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:58:08,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:58:08,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:58:08,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:58:08,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:58:08,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:58:08,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:58:08,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:58:08,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:58:08,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:58:08,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:58:08,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:58:08,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:58:08,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:58:08,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:58:08,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:58:08,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:58:08,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:58:08,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:58:08,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:58:08,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:58:08,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:58:08,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:58:08,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:58:08,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:58:08,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:58:08,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:58:08,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:58:08,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:58:08,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:58:08,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:58:08,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:58:08,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:58:08,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:58:08,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:58:08,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:58:08,455 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:58:08,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:58:08,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:58:08,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:58:08,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:58:08,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:58:08,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:58:08,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:58:08,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:58:08,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:58:08,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:58:08,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:58:08,905 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:58:08,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-21 18:58:08,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fef19489/9b7c0d03b8344897ab3f38d0bf7f9e70/FLAG2f5fabe38 [2021-02-21 18:58:09,640 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:58:09,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-21 18:58:09,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fef19489/9b7c0d03b8344897ab3f38d0bf7f9e70/FLAG2f5fabe38 [2021-02-21 18:58:09,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fef19489/9b7c0d03b8344897ab3f38d0bf7f9e70 [2021-02-21 18:58:09,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:58:09,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:58:09,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:58:09,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:58:09,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:58:09,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:58:09" (1/1) ... [2021-02-21 18:58:09,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdc68ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:09, skipping insertion in model container [2021-02-21 18:58:09,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:58:09" (1/1) ... [2021-02-21 18:58:09,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:58:10,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:58:10,452 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_spec3_product30.cil.c[17117,17130] [2021-02-21 18:58:10,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:58:10,483 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:58:10,580 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_spec3_product30.cil.c[17117,17130] [2021-02-21 18:58:10,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:58:10,673 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:58:10,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10 WrapperNode [2021-02-21 18:58:10,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:58:10,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:58:10,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:58:10,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:58:10,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (1/1) ... [2021-02-21 18:58:10,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (1/1) ... [2021-02-21 18:58:10,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (1/1) ... [2021-02-21 18:58:10,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (1/1) ... [2021-02-21 18:58:10,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (1/1) ... [2021-02-21 18:58:10,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (1/1) ... [2021-02-21 18:58:10,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (1/1) ... [2021-02-21 18:58:10,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:58:10,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:58:10,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:58:10,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:58:10,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (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 [2021-02-21 18:58:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:58:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:58:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:58:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:58:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:58:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:58:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:58:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:58:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:58:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:58:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:58:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:58:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:58:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:58:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:58:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:58:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:58:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:58:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:58:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:58:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:58:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:58:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:58:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:58:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:58:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 18:58:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:58:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 18:58:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:58:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:58:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:58:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:58:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:58:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:58:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:58:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:58:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:58:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:58:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:58:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:58:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:58:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:58:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:58:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:58:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:58:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:58:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:58:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:58:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:58:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:58:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:58:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:58:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:58:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:58:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:58:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:58:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:58:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:58:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:58:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:58:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:58:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:58:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:58:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:58:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:58:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:58:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:58:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:58:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:58:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:58:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:58:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:58:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:58:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:58:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:58:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:58:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:58:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:58:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:58:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:58:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:58:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:58:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:58:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:58:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:58:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:58:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:58:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:58:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 18:58:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:58:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 18:58:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:58:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:58:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:58:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:58:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:58:12,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:58:12,538 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:58:12,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:58:12 BoogieIcfgContainer [2021-02-21 18:58:12,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:58:12,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:58:12,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:58:12,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:58:12,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:58:09" (1/3) ... [2021-02-21 18:58:12,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b7640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:58:12, skipping insertion in model container [2021-02-21 18:58:12,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:10" (2/3) ... [2021-02-21 18:58:12,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b7640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:58:12, skipping insertion in model container [2021-02-21 18:58:12,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:58:12" (3/3) ... [2021-02-21 18:58:12,552 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2021-02-21 18:58:12,560 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:58:12,566 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:58:12,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:58:12,609 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:58:12,609 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:58:12,609 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:58:12,609 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:58:12,609 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:58:12,610 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:58:12,610 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:58:12,610 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:58:12,635 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2021-02-21 18:58:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:58:12,658 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:12,659 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] [2021-02-21 18:58:12,660 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:12,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:12,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1591527055, now seen corresponding path program 1 times [2021-02-21 18:58:12,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:12,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896455671] [2021-02-21 18:58:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:12,767 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,793 WARN L202 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:13,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:58:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:58:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:58:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:13,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:13,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:14,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896455671] [2021-02-21 18:58:14,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:14,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:58:14,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7846989] [2021-02-21 18:58:14,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:58:14,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:14,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:58:14,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:58:14,051 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 3 states. [2021-02-21 18:58:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:16,677 INFO L93 Difference]: Finished difference Result 492 states and 586 transitions. [2021-02-21 18:58:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:58:16,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:58:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:16,697 INFO L225 Difference]: With dead ends: 492 [2021-02-21 18:58:16,697 INFO L226 Difference]: Without dead ends: 306 [2021-02-21 18:58:16,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:58:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-21 18:58:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 264. [2021-02-21 18:58:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-21 18:58:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-21 18:58:16,893 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 158 [2021-02-21 18:58:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:16,897 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-21 18:58:16,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:58:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-21 18:58:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:58:16,912 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:16,913 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] [2021-02-21 18:58:16,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:58:16,913 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:16,917 INFO L82 PathProgramCache]: Analyzing trace with hash -68019509, now seen corresponding path program 1 times [2021-02-21 18:58:16,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:16,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014093882] [2021-02-21 18:58:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:16,933 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:17,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,711 WARN L202 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:58:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:58:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:58:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:17,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:17,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:17,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014093882] [2021-02-21 18:58:17,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:17,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:58:17,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070181936] [2021-02-21 18:58:17,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:58:17,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:17,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:58:17,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:58:17,826 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-21 18:58:19,041 WARN L202 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:58:20,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:20,776 INFO L93 Difference]: Finished difference Result 404 states and 456 transitions. [2021-02-21 18:58:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:58:20,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:58:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:20,783 INFO L225 Difference]: With dead ends: 404 [2021-02-21 18:58:20,783 INFO L226 Difference]: Without dead ends: 289 [2021-02-21 18:58:20,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:58:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-21 18:58:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2021-02-21 18:58:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-21 18:58:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-21 18:58:20,890 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 159 [2021-02-21 18:58:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:20,891 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-21 18:58:20,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:58:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-21 18:58:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:58:20,894 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:20,894 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] [2021-02-21 18:58:20,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:58:20,895 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:20,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1238661572, now seen corresponding path program 1 times [2021-02-21 18:58:20,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:20,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575779427] [2021-02-21 18:58:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:20,900 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:20,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:58:21,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,649 WARN L202 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:21,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:58:21,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:58:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:58:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:58:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:58:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:58:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:21,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575779427] [2021-02-21 18:58:21,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:21,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:58:21,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79082397] [2021-02-21 18:58:21,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:58:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:58:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:58:21,873 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-21 18:58:22,946 WARN L202 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:23,749 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:58:24,448 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:58:25,167 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:25,879 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:26,603 WARN L202 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:29,302 INFO L93 Difference]: Finished difference Result 450 states and 518 transitions. [2021-02-21 18:58:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:58:29,304 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:58:29,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:29,308 INFO L225 Difference]: With dead ends: 450 [2021-02-21 18:58:29,308 INFO L226 Difference]: Without dead ends: 311 [2021-02-21 18:58:29,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:58:29,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-21 18:58:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 254. [2021-02-21 18:58:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-21 18:58:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 273 transitions. [2021-02-21 18:58:29,414 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 273 transitions. Word has length 172 [2021-02-21 18:58:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:29,415 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 273 transitions. [2021-02-21 18:58:29,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:58:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 273 transitions. [2021-02-21 18:58:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-21 18:58:29,418 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:29,418 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] [2021-02-21 18:58:29,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:58:29,419 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:29,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:29,419 INFO L82 PathProgramCache]: Analyzing trace with hash -974345890, now seen corresponding path program 1 times [2021-02-21 18:58:29,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:29,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767707301] [2021-02-21 18:58:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:29,423 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:29,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:29,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:29,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:29,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:29,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:29,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:29,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:29,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:29,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,209 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:58:30,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:58:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:58:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:58:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:58:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 18:58:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 18:58:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:30,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-21 18:58:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:30,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:30,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:30,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767707301] [2021-02-21 18:58:30,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:30,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:58:30,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206816637] [2021-02-21 18:58:30,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:58:30,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:58:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:58:30,432 INFO L87 Difference]: Start difference. First operand 254 states and 273 transitions. Second operand 10 states. [2021-02-21 18:58:31,516 WARN L202 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:35,537 WARN L202 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:36,378 WARN L202 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:37,077 WARN L202 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:37,799 WARN L202 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:38,486 WARN L202 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:39,581 WARN L202 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:40,472 WARN L202 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:41,809 INFO L93 Difference]: Finished difference Result 694 states and 853 transitions. [2021-02-21 18:58:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-21 18:58:41,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2021-02-21 18:58:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:41,822 INFO L225 Difference]: With dead ends: 694 [2021-02-21 18:58:41,822 INFO L226 Difference]: Without dead ends: 555 [2021-02-21 18:58:41,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-21 18:58:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-02-21 18:58:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 387. [2021-02-21 18:58:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-21 18:58:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 429 transitions. [2021-02-21 18:58:42,063 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 429 transitions. Word has length 185 [2021-02-21 18:58:42,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:42,064 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 429 transitions. [2021-02-21 18:58:42,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:58:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 429 transitions. [2021-02-21 18:58:42,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-21 18:58:42,069 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:42,070 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] [2021-02-21 18:58:42,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:58:42,070 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:42,071 INFO L82 PathProgramCache]: Analyzing trace with hash -945997450, now seen corresponding path program 1 times [2021-02-21 18:58:42,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:42,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874624441] [2021-02-21 18:58:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:42,076 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:42,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:42,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:42,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:42,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:42,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,809 WARN L202 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:42,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:42,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:58:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:58:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:58:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:58:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:58:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 18:58:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-21 18:58:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:58:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:42,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874624441] [2021-02-21 18:58:42,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:42,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:58:42,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524514208] [2021-02-21 18:58:42,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:58:42,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:42,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:58:43,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:58:43,001 INFO L87 Difference]: Start difference. First operand 387 states and 429 transitions. Second operand 7 states. [2021-02-21 18:58:44,062 WARN L202 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:45,754 INFO L93 Difference]: Finished difference Result 619 states and 723 transitions. [2021-02-21 18:58:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:58:45,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2021-02-21 18:58:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:45,758 INFO L225 Difference]: With dead ends: 619 [2021-02-21 18:58:45,758 INFO L226 Difference]: Without dead ends: 347 [2021-02-21 18:58:45,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:58:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-21 18:58:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-21 18:58:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-21 18:58:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 296 transitions. [2021-02-21 18:58:45,882 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 296 transitions. Word has length 190 [2021-02-21 18:58:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:45,882 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 296 transitions. [2021-02-21 18:58:45,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:58:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 296 transitions. [2021-02-21 18:58:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-21 18:58:45,885 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:45,886 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] [2021-02-21 18:58:45,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:58:45,886 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:45,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:45,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1472450222, now seen corresponding path program 1 times [2021-02-21 18:58:45,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:45,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270609069] [2021-02-21 18:58:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:45,890 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:45,965 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:46,037 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:46,236 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:58:46,237 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:58:46,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:58:46,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:58:46 BoogieIcfgContainer [2021-02-21 18:58:46,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:58:46,279 INFO L168 Benchmark]: Toolchain (without parser) took 36322.68 ms. Allocated memory was 161.5 MB in the beginning and 418.4 MB in the end (delta: 256.9 MB). Free memory was 136.4 MB in the beginning and 324.9 MB in the end (delta: -188.5 MB). Peak memory consumption was 69.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:46,279 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 145.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:58:46,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.32 ms. Allocated memory is still 161.5 MB. Free memory was 135.4 MB in the beginning and 140.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:46,284 INFO L168 Benchmark]: Boogie Preprocessor took 141.18 ms. Allocated memory is still 161.5 MB. Free memory was 140.8 MB in the beginning and 137.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:46,287 INFO L168 Benchmark]: RCFGBuilder took 1724.53 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 137.2 MB in the beginning and 171.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 67.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:46,287 INFO L168 Benchmark]: TraceAbstraction took 33728.11 ms. Allocated memory was 194.0 MB in the beginning and 418.4 MB in the end (delta: 224.4 MB). Free memory was 171.4 MB in the beginning and 324.9 MB in the end (delta: -153.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:46,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 145.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.32 ms. Allocated memory is still 161.5 MB. Free memory was 135.4 MB in the beginning and 140.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.18 ms. Allocated memory is still 161.5 MB. Free memory was 140.8 MB in the beginning and 137.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1724.53 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 137.2 MB in the beginning and 171.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 67.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33728.11 ms. Allocated memory was 194.0 MB in the beginning and 418.4 MB in the end (delta: 224.4 MB). Free memory was 171.4 MB in the beginning and 324.9 MB in the end (delta: -153.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 885]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L138] int cleanupTimeShifts = 4; [L409] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L217] int retValue_acc ; [L218] int tmp ; [L222] FCALL select_helpers() [L223] FCALL select_features() [L224] CALL, EXPR valid_product() [L916] int retValue_acc ; [L919] retValue_acc = 1 [L920] return (retValue_acc); [L224] RET, EXPR valid_product() [L224] tmp = valid_product() [L226] COND TRUE \read(tmp) [L228] FCALL setup() [L229] CALL runTest() [L208] CALL test() [L608] int splverifierCounter ; [L609] int tmp ; [L610] int tmp___0 ; [L611] int tmp___1 ; [L612] int tmp___2 ; [L615] splverifierCounter = 0 [L617] COND TRUE 1 [L619] COND TRUE splverifierCounter < 4 [L625] tmp = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp) [L629] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L629] RET waterRise() [L635] tmp___0 = __VERIFIER_nondet_int() [L637] COND FALSE !(\read(tmp___0)) [L645] tmp___2 = __VERIFIER_nondet_int() [L647] COND TRUE \read(tmp___2) [L649] CALL startSystem() [L876] systemActive = 1 [L649] RET startSystem() [L662] CALL timeShift() [L685] COND FALSE !(\read(pumpRunning)) [L692] COND TRUE \read(systemActive) [L694] CALL processEnvironment() [L740] int tmp ; [L743] COND FALSE !(\read(pumpRunning)) [L758] CALL processEnvironment__wrappee__methaneQuery() [L714] int tmp ; [L717] COND FALSE !(\read(pumpRunning)) [L732] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment__wrappee__methaneQuery() [L694] RET processEnvironment() [L700] CALL __utac_acc__Specification3_spec__1() [L926] int tmp ; [L927] int tmp___0 ; [L928] int tmp___1 ; [L932] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L932] RET, EXPR isMethaneLevelCritical() [L932] tmp = isMethaneLevelCritical() [L934] COND FALSE !(\read(tmp)) [L938] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L938] RET, EXPR getWaterLevel() [L938] tmp___0 = getWaterLevel() [L940] COND TRUE tmp___0 == 2 [L942] CALL, EXPR isPumpRunning() [L809] int retValue_acc ; [L812] retValue_acc = pumpRunning [L813] return (retValue_acc); [L942] RET, EXPR isPumpRunning() [L942] tmp___1 = isPumpRunning() [L944] COND FALSE !(\read(tmp___1)) [L948] CALL __automaton_fail() [L885] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 643 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 27.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1156 SDtfs, 2122 SDslu, 1435 SDs, 0 SdLazy, 3033 SolverSat, 682 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 368 StatesRemovedByMinimization, 5 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...