/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:04:22,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:04:22,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:04:22,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:04:22,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:04:22,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:04:22,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:04:22,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:04:22,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:04:22,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:04:22,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:04:22,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:04:22,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:04:22,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:04:22,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:04:22,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:04:22,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:04:22,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:04:22,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:04:22,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:04:22,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:04:22,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:04:22,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:04:22,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:04:22,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:04:22,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:04:22,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:04:22,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:04:22,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:04:22,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:04:22,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:04:22,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:04:22,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:04:22,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:04:22,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:04:22,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:04:22,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:04:22,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:04:22,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:04:22,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:04:22,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:04:22,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:04:22,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:04:22,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:04:22,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:04:22,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:04:22,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:04:22,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:04:22,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:04:22,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:04:22,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:04:22,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:04:22,939 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:04:22,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:04:22,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:04:22,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:04:22,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:04:22,940 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:04:22,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:04:22,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:04:22,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:04:22,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:04:22,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:04:22,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:04:22,942 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:04:22,943 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:04:23,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:04:23,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:04:23,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:04:23,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:04:23,408 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:04:23,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2021-02-22 01:04:23,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db565645/016fdce8137044ae9977641e956b4f81/FLAG59a1ffb76 [2021-02-22 01:04:24,183 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:04:24,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2021-02-22 01:04:24,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db565645/016fdce8137044ae9977641e956b4f81/FLAG59a1ffb76 [2021-02-22 01:04:24,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db565645/016fdce8137044ae9977641e956b4f81 [2021-02-22 01:04:24,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:04:24,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:04:24,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:04:24,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:04:24,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:04:24,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:04:24" (1/1) ... [2021-02-22 01:04:24,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d269f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:24, skipping insertion in model container [2021-02-22 01:04:24,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:04:24" (1/1) ... [2021-02-22 01:04:24,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:04:24,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:04:24,841 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_product44.cil.c[4955,4968] [2021-02-22 01:04:24,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:04:24,976 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:04:25,013 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_product44.cil.c[4955,4968] [2021-02-22 01:04:25,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:04:25,194 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:04:25,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25 WrapperNode [2021-02-22 01:04:25,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:04:25,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:04:25,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:04:25,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:04:25,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... [2021-02-22 01:04:25,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... [2021-02-22 01:04:25,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... [2021-02-22 01:04:25,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... [2021-02-22 01:04:25,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... [2021-02-22 01:04:25,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... [2021-02-22 01:04:25,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... [2021-02-22 01:04:25,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:04:25,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:04:25,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:04:25,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:04:25,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:04:25,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:04:25,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:04:25,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:04:25,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:04:25,412 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:04:25,412 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:04:25,413 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:04:25,413 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:04:25,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:04:25,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:04:25,413 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:04:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:04:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:04:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:04:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:04:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:04:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:04:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:04:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:04:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:04:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:04:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:04:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:04:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:04:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:04:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:04:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:04:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:04:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:04:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:04:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:04:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-22 01:04:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:04:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:04:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:04:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:04:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:04:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:04:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:04:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:04:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:04:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:04:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:04:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:04:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:04:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:04:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:04:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:04:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:04:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:04:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:04:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:04:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:04:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:04:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:04:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:04:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:04:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:04:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:04:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:04:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:04:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:04:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:04:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:04:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:04:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:04:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:04:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:04:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:04:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:04:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:04:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:04:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-22 01:04:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:04:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:04:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:04:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:04:26,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:04:26,764 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:04:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:04:26 BoogieIcfgContainer [2021-02-22 01:04:26,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:04:26,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:04:26,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:04:26,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:04:26,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:04:24" (1/3) ... [2021-02-22 01:04:26,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f8fa7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:04:26, skipping insertion in model container [2021-02-22 01:04:26,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:25" (2/3) ... [2021-02-22 01:04:26,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f8fa7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:04:26, skipping insertion in model container [2021-02-22 01:04:26,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:04:26" (3/3) ... [2021-02-22 01:04:26,779 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2021-02-22 01:04:26,786 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:04:26,792 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:04:26,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:04:26,838 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:04:26,838 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:04:26,838 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:04:26,838 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:04:26,839 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:04:26,839 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:04:26,839 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:04:26,840 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:04:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states. [2021-02-22 01:04:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:04:26,887 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:26,888 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] [2021-02-22 01:04:26,888 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:26,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1171320644, now seen corresponding path program 1 times [2021-02-22 01:04:26,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:26,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398449906] [2021-02-22 01:04:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:26,999 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,719 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:04:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:04:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:04:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:27,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:27,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:27,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398449906] [2021-02-22 01:04:27,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:27,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:04:27,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349714277] [2021-02-22 01:04:27,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:04:27,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:04:27,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:04:27,960 INFO L87 Difference]: Start difference. First operand 325 states. Second operand 3 states. [2021-02-22 01:04:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:29,693 INFO L93 Difference]: Finished difference Result 512 states and 604 transitions. [2021-02-22 01:04:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:04:29,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:04:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:29,720 INFO L225 Difference]: With dead ends: 512 [2021-02-22 01:04:29,720 INFO L226 Difference]: Without dead ends: 317 [2021-02-22 01:04:29,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:04:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-22 01:04:29,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 273. [2021-02-22 01:04:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2021-02-22 01:04:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2021-02-22 01:04:29,900 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 158 [2021-02-22 01:04:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:29,901 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2021-02-22 01:04:29,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:04:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2021-02-22 01:04:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:04:29,907 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:29,907 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] [2021-02-22 01:04:29,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:04:29,908 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:29,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:29,908 INFO L82 PathProgramCache]: Analyzing trace with hash -35657380, now seen corresponding path program 1 times [2021-02-22 01:04:29,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:29,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674120149] [2021-02-22 01:04:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:29,913 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:30,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,371 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:04:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:04:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:04:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:30,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674120149] [2021-02-22 01:04:30,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:30,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:04:30,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043815908] [2021-02-22 01:04:30,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:04:30,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:30,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:04:30,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:04:30,482 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand 4 states. [2021-02-22 01:04:31,198 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:04:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:32,308 INFO L93 Difference]: Finished difference Result 415 states and 464 transitions. [2021-02-22 01:04:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:04:32,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:04:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:32,319 INFO L225 Difference]: With dead ends: 415 [2021-02-22 01:04:32,320 INFO L226 Difference]: Without dead ends: 300 [2021-02-22 01:04:32,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:04:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-22 01:04:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 263. [2021-02-22 01:04:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-22 01:04:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 282 transitions. [2021-02-22 01:04:32,456 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 282 transitions. Word has length 159 [2021-02-22 01:04:32,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:32,456 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 282 transitions. [2021-02-22 01:04:32,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:04:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 282 transitions. [2021-02-22 01:04:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:04:32,459 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:32,460 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] [2021-02-22 01:04:32,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:04:32,460 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:32,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:32,461 INFO L82 PathProgramCache]: Analyzing trace with hash 999486224, now seen corresponding path program 1 times [2021-02-22 01:04:32,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:32,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25225199] [2021-02-22 01:04:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:32,466 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:32,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:32,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:32,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:32,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,907 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:32,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:32,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:32,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:32,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:04:32,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:04:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:04:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:33,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:04:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:04:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:04:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:33,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25225199] [2021-02-22 01:04:33,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:33,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:04:33,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606895117] [2021-02-22 01:04:33,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:04:33,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:04:33,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:04:33,082 INFO L87 Difference]: Start difference. First operand 263 states and 282 transitions. Second operand 10 states. [2021-02-22 01:04:33,750 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:34,154 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:04:34,535 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:04:34,913 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:35,254 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:35,649 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:36,692 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:04:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:39,335 INFO L93 Difference]: Finished difference Result 725 states and 836 transitions. [2021-02-22 01:04:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:04:39,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:04:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:39,342 INFO L225 Difference]: With dead ends: 725 [2021-02-22 01:04:39,342 INFO L226 Difference]: Without dead ends: 577 [2021-02-22 01:04:39,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:04:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-02-22 01:04:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 470. [2021-02-22 01:04:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2021-02-22 01:04:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 519 transitions. [2021-02-22 01:04:39,532 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 519 transitions. Word has length 172 [2021-02-22 01:04:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:39,533 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 519 transitions. [2021-02-22 01:04:39,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:04:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 519 transitions. [2021-02-22 01:04:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:04:39,537 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:39,537 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] [2021-02-22 01:04:39,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:04:39,537 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:39,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1228472031, now seen corresponding path program 1 times [2021-02-22 01:04:39,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:39,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804290789] [2021-02-22 01:04:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:39,542 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:39,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:39,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:39,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:39,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:39,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:39,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:39,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:39,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:39,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,007 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:04:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:04:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:04:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:04:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:40,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:40,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:04:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:40,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:40,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:40,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804290789] [2021-02-22 01:04:40,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:40,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:04:40,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31896825] [2021-02-22 01:04:40,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:04:40,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:40,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:04:40,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:04:40,198 INFO L87 Difference]: Start difference. First operand 470 states and 519 transitions. Second operand 9 states. [2021-02-22 01:04:40,790 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:42,687 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:43,101 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:43,521 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:43,945 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:44,312 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:44,701 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:45,079 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:46,273 INFO L93 Difference]: Finished difference Result 1262 states and 1498 transitions. [2021-02-22 01:04:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:04:46,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:04:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:46,281 INFO L225 Difference]: With dead ends: 1262 [2021-02-22 01:04:46,281 INFO L226 Difference]: Without dead ends: 907 [2021-02-22 01:04:46,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:04:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-02-22 01:04:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 804. [2021-02-22 01:04:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2021-02-22 01:04:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 908 transitions. [2021-02-22 01:04:46,632 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 908 transitions. Word has length 177 [2021-02-22 01:04:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:46,633 INFO L480 AbstractCegarLoop]: Abstraction has 804 states and 908 transitions. [2021-02-22 01:04:46,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:04:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 908 transitions. [2021-02-22 01:04:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:04:46,639 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:46,639 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] [2021-02-22 01:04:46,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:04:46,639 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:46,640 INFO L82 PathProgramCache]: Analyzing trace with hash -963125367, now seen corresponding path program 1 times [2021-02-22 01:04:46,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:46,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264590423] [2021-02-22 01:04:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:46,644 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:46,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:46,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:46,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:46,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:46,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:46,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:46,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:46,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:46,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:46,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:46,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:46,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:46,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:46,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,059 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:04:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:04:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:04:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:04:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-22 01:04:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:47,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:47,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:47,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264590423] [2021-02-22 01:04:47,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:47,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:04:47,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287717467] [2021-02-22 01:04:47,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:04:47,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:04:47,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:04:47,242 INFO L87 Difference]: Start difference. First operand 804 states and 908 transitions. Second operand 6 states. [2021-02-22 01:04:47,836 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:50,275 INFO L93 Difference]: Finished difference Result 1860 states and 2189 transitions. [2021-02-22 01:04:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:04:50,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-22 01:04:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:50,283 INFO L225 Difference]: With dead ends: 1860 [2021-02-22 01:04:50,283 INFO L226 Difference]: Without dead ends: 1171 [2021-02-22 01:04:50,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:04:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-02-22 01:04:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1091. [2021-02-22 01:04:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2021-02-22 01:04:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1236 transitions. [2021-02-22 01:04:50,687 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1236 transitions. Word has length 182 [2021-02-22 01:04:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:50,688 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1236 transitions. [2021-02-22 01:04:50,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:04:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1236 transitions. [2021-02-22 01:04:50,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:04:50,692 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:50,692 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] [2021-02-22 01:04:50,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:04:50,692 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1043658529, now seen corresponding path program 1 times [2021-02-22 01:04:50,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:50,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611922880] [2021-02-22 01:04:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:50,696 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:04:50,785 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:04:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:04:50,855 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:04:51,077 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:04:51,077 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:04:51,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:04:51,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:04:51 BoogieIcfgContainer [2021-02-22 01:04:51,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:04:51,102 INFO L168 Benchmark]: Toolchain (without parser) took 26585.50 ms. Allocated memory was 157.3 MB in the beginning and 553.6 MB in the end (delta: 396.4 MB). Free memory was 132.6 MB in the beginning and 478.5 MB in the end (delta: -346.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:51,103 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:04:51,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.84 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 136.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:51,104 INFO L168 Benchmark]: Boogie Preprocessor took 120.39 ms. Allocated memory is still 157.3 MB. Free memory was 136.0 MB in the beginning and 132.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:51,104 INFO L168 Benchmark]: RCFGBuilder took 1453.30 ms. Allocated memory was 157.3 MB in the beginning and 200.3 MB in the end (delta: 43.0 MB). Free memory was 132.2 MB in the beginning and 160.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:51,105 INFO L168 Benchmark]: TraceAbstraction took 24328.76 ms. Allocated memory was 200.3 MB in the beginning and 553.6 MB in the end (delta: 353.4 MB). Free memory was 160.5 MB in the beginning and 478.5 MB in the end (delta: -318.0 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:51,107 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 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 664.84 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 136.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 120.39 ms. Allocated memory is still 157.3 MB. Free memory was 136.0 MB in the beginning and 132.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1453.30 ms. Allocated memory was 157.3 MB in the beginning and 200.3 MB in the end (delta: 43.0 MB). Free memory was 132.2 MB in the beginning and 160.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24328.76 ms. Allocated memory was 200.3 MB in the beginning and 553.6 MB in the end (delta: 353.4 MB). Free memory was 160.5 MB in the beginning and 478.5 MB in the end (delta: -318.0 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 320]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L187] int waterLevel = 1; [L188] int methaneLevelCritical = 0; [L494] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L695] int pumpRunning = 0; [L696] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L889] int splverifierCounter ; [L890] int tmp ; [L891] int tmp___0 ; [L892] int tmp___1 ; [L893] int tmp___2 ; [L896] splverifierCounter = 0 [L898] COND TRUE 1 [L900] COND TRUE splverifierCounter < 4 [L906] tmp = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp) [L910] CALL waterRise() [L205] COND TRUE waterLevel < 2 [L206] waterLevel = waterLevel + 1 [L910] RET waterRise() [L916] tmp___0 = __VERIFIER_nondet_int() [L918] COND FALSE !(\read(tmp___0)) [L926] tmp___2 = __VERIFIER_nondet_int() [L928] COND FALSE !(\read(tmp___2)) [L934] tmp___1 = __VERIFIER_nondet_int() [L936] COND TRUE \read(tmp___1) [L938] CALL stopSystem() [L868] COND FALSE !(\read(pumpRunning)) [L875] systemActive = 0 [L938] RET stopSystem() [L945] CALL timeShift() [L702] COND FALSE !(\read(pumpRunning)) [L709] COND FALSE !(\read(systemActive)) [L717] CALL __utac_acc__Specification3_spec__1() [L151] int tmp ; [L152] int tmp___0 ; [L153] int tmp___1 ; [L157] CALL, EXPR isMethaneLevelCritical() [L226] int retValue_acc ; [L229] retValue_acc = methaneLevelCritical [L230] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND FALSE !(\read(tmp)) [L163] CALL, EXPR getWaterLevel() [L258] int retValue_acc ; [L261] retValue_acc = waterLevel [L262] return (retValue_acc); [L163] RET, EXPR getWaterLevel() [L163] tmp___0 = getWaterLevel() [L165] COND TRUE tmp___0 == 2 [L167] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L167] RET, EXPR isPumpRunning() [L167] tmp___1 = isPumpRunning() [L169] COND FALSE !(\read(tmp___1)) [L173] CALL __automaton_fail() [L320] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 640 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 19.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1308 SDtfs, 2146 SDslu, 1653 SDs, 0 SdLazy, 3711 SolverSat, 728 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1091occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 371 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...