/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:27:45,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:27:45,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:27:45,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:27:45,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:27:45,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:27:45,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:27:45,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:27:45,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:27:45,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:27:45,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:27:45,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:27:45,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:27:45,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:27:45,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:27:45,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:27:45,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:27:45,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:27:45,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:27:45,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:27:45,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:27:45,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:27:45,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:27:45,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:27:45,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:27:45,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:27:45,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:27:45,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:27:45,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:27:45,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:27:45,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:27:45,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:27:45,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:27:45,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:27:45,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:27:45,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:27:45,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:27:45,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:27:45,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:27:45,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:27:45,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:27:45,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:27:45,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:27:45,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:27:45,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:27:45,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:27:45,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:27:45,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:27:45,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:27:45,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:27:45,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:27:45,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:27:45,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:27:45,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:27:45,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:27:45,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:27:45,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:27:45,455 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:27:45,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:27:45,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:27:45,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:27:45,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:27:45,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:27:45,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:27:45,457 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:27:45,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:27:45,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:27:45,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:27:45,884 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:27:45,885 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:27:45,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product03.cil.c [2021-02-23 16:27:45,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3de90df/27d7840f2fad4f2d8c40fad091b04c29/FLAG22a67ebf1 [2021-02-23 16:27:46,694 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:27:46,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product03.cil.c [2021-02-23 16:27:46,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3de90df/27d7840f2fad4f2d8c40fad091b04c29/FLAG22a67ebf1 [2021-02-23 16:27:46,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3de90df/27d7840f2fad4f2d8c40fad091b04c29 [2021-02-23 16:27:46,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:27:47,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:27:47,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:47,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:27:47,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:27:47,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:46" (1/1) ... [2021-02-23 16:27:47,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2714a866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47, skipping insertion in model container [2021-02-23 16:27:47,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:46" (1/1) ... [2021-02-23 16:27:47,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:27:47,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:27:47,234 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_spec4_product03.cil.c[1281,1294] [2021-02-23 16:27:47,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:47,407 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:27:47,424 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_spec4_product03.cil.c[1281,1294] [2021-02-23 16:27:47,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:47,586 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:27:47,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47 WrapperNode [2021-02-23 16:27:47,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:47,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:27:47,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:27:47,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:27:47,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:27:47,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:27:47,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:27:47,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:27:47,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:27:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:27:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:27:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:27:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:27:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:27:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:27:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:27:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:27:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:27:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:27:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:27:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:27:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:27:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:27:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:27:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:27:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:27:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:27:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:27:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:27:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:27:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:27:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:27:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:27:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:27:47,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:27:47,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:27:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:27:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:27:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:27:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:27:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:27:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:27:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:27:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:27:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:27:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:27:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:27:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:27:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:27:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:27:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:27:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:27:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:27:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:27:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:27:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:27:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:27:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:27:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:27:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:27:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:27:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:27:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:27:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:27:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:27:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:27:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:27:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:27:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:27:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:27:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:27:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:27:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:27:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:27:49,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:27:49,291 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:27:49,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:49 BoogieIcfgContainer [2021-02-23 16:27:49,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:27:49,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:27:49,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:27:49,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:27:49,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:27:46" (1/3) ... [2021-02-23 16:27:49,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f036c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:49, skipping insertion in model container [2021-02-23 16:27:49,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47" (2/3) ... [2021-02-23 16:27:49,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f036c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:49, skipping insertion in model container [2021-02-23 16:27:49,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:49" (3/3) ... [2021-02-23 16:27:49,304 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product03.cil.c [2021-02-23 16:27:49,311 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:27:49,317 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:27:49,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:27:49,364 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:27:49,364 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:27:49,364 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:27:49,364 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:27:49,365 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:27:49,365 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:27:49,365 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:27:49,365 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:27:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states. [2021-02-23 16:27:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:27:49,407 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:49,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:27:49,409 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1306059101, now seen corresponding path program 1 times [2021-02-23 16:27:49,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:49,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050005553] [2021-02-23 16:27:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:49,507 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:49,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:49,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:49,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:49,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,181 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:27:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:27:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:50,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050005553] [2021-02-23 16:27:50,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:50,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:27:50,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464122712] [2021-02-23 16:27:50,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:27:50,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:50,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:27:50,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:27:50,542 INFO L87 Difference]: Start difference. First operand 256 states. Second operand 3 states. [2021-02-23 16:27:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:52,131 INFO L93 Difference]: Finished difference Result 369 states and 443 transitions. [2021-02-23 16:27:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:27:52,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:27:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:52,148 INFO L225 Difference]: With dead ends: 369 [2021-02-23 16:27:52,148 INFO L226 Difference]: Without dead ends: 243 [2021-02-23 16:27:52,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:27:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-23 16:27:52,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 204. [2021-02-23 16:27:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-02-23 16:27:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2021-02-23 16:27:52,283 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 147 [2021-02-23 16:27:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:52,284 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2021-02-23 16:27:52,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:27:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2021-02-23 16:27:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:27:52,289 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:52,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:27:52,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:27:52,290 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:52,291 INFO L82 PathProgramCache]: Analyzing trace with hash 220437617, now seen corresponding path program 1 times [2021-02-23 16:27:52,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:52,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243127386] [2021-02-23 16:27:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:52,297 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:52,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,788 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:27:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:27:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:52,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243127386] [2021-02-23 16:27:52,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:52,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:27:52,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277202866] [2021-02-23 16:27:52,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:27:52,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:52,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:27:52,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:27:52,979 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand 4 states. [2021-02-23 16:27:53,842 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:27:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:54,506 INFO L93 Difference]: Finished difference Result 276 states and 307 transitions. [2021-02-23 16:27:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:27:54,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:27:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:54,511 INFO L225 Difference]: With dead ends: 276 [2021-02-23 16:27:54,511 INFO L226 Difference]: Without dead ends: 226 [2021-02-23 16:27:54,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:27:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-23 16:27:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 194. [2021-02-23 16:27:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-02-23 16:27:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 205 transitions. [2021-02-23 16:27:54,621 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 205 transitions. Word has length 148 [2021-02-23 16:27:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:54,623 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 205 transitions. [2021-02-23 16:27:54,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:27:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 205 transitions. [2021-02-23 16:27:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:27:54,631 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:54,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:27:54,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:27:54,632 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:54,633 INFO L82 PathProgramCache]: Analyzing trace with hash 735536286, now seen corresponding path program 1 times [2021-02-23 16:27:54,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:54,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811363998] [2021-02-23 16:27:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:54,639 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:54,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:54,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:54,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:54,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:27:54,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:27:54,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:27:54,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,145 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:55,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:27:55,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:55,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:55,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:55,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:27:55,320 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:27:55,323 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:27:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:55,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:27:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:55,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:27:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:55,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:55,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:55,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811363998] [2021-02-23 16:27:55,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:55,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:27:55,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003011012] [2021-02-23 16:27:55,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:27:55,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:55,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:27:55,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:27:55,412 INFO L87 Difference]: Start difference. First operand 194 states and 205 transitions. Second operand 9 states. [2021-02-23 16:27:56,003 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:27:56,438 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:27:56,855 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:27:57,238 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:57,641 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:27:58,018 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:59,136 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:00,427 INFO L93 Difference]: Finished difference Result 475 states and 544 transitions. [2021-02-23 16:28:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:28:00,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:28:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:00,438 INFO L225 Difference]: With dead ends: 475 [2021-02-23 16:28:00,438 INFO L226 Difference]: Without dead ends: 396 [2021-02-23 16:28:00,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:28:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-02-23 16:28:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 325. [2021-02-23 16:28:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-23 16:28:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 357 transitions. [2021-02-23 16:28:00,622 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 357 transitions. Word has length 157 [2021-02-23 16:28:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:00,624 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 357 transitions. [2021-02-23 16:28:00,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:28:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 357 transitions. [2021-02-23 16:28:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-23 16:28:00,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:00,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:28:00,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:28:00,627 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1938294025, now seen corresponding path program 1 times [2021-02-23 16:28:00,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:00,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300820100] [2021-02-23 16:28:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:00,634 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,106 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:28:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:28:01,228 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:28:01,229 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:28:01,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:28:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:28:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:01,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:28:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:28:01,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300820100] [2021-02-23 16:28:01,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:01,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:28:01,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371756637] [2021-02-23 16:28:01,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:28:01,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:28:01,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:28:01,374 INFO L87 Difference]: Start difference. First operand 325 states and 357 transitions. Second operand 13 states. [2021-02-23 16:28:02,040 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:02,541 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:02,917 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:03,334 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:03,725 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:04,073 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:04,794 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:05,660 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:06,055 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:06,500 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:06,896 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:07,273 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:07,667 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:08,071 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:08,457 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:08,842 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:09,275 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:09,715 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:10,119 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:10,539 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:11,400 INFO L93 Difference]: Finished difference Result 931 states and 1116 transitions. [2021-02-23 16:28:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 16:28:11,401 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2021-02-23 16:28:11,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:11,406 INFO L225 Difference]: With dead ends: 931 [2021-02-23 16:28:11,406 INFO L226 Difference]: Without dead ends: 721 [2021-02-23 16:28:11,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 16:28:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-02-23 16:28:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 678. [2021-02-23 16:28:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2021-02-23 16:28:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 776 transitions. [2021-02-23 16:28:11,740 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 776 transitions. Word has length 160 [2021-02-23 16:28:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:11,741 INFO L480 AbstractCegarLoop]: Abstraction has 678 states and 776 transitions. [2021-02-23 16:28:11,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:28:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 776 transitions. [2021-02-23 16:28:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:28:11,744 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:11,745 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] [2021-02-23 16:28:11,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:28:11,745 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:11,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:11,746 INFO L82 PathProgramCache]: Analyzing trace with hash 362838162, now seen corresponding path program 1 times [2021-02-23 16:28:11,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:11,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568136225] [2021-02-23 16:28:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:11,749 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,133 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:12,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:28:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:28:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:28:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:28:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:28:12,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568136225] [2021-02-23 16:28:12,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:12,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 16:28:12,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192476645] [2021-02-23 16:28:12,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 16:28:12,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:12,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 16:28:12,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:28:12,277 INFO L87 Difference]: Start difference. First operand 678 states and 776 transitions. Second operand 5 states. [2021-02-23 16:28:12,900 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:13,892 INFO L93 Difference]: Finished difference Result 1146 states and 1341 transitions. [2021-02-23 16:28:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 16:28:13,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2021-02-23 16:28:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:13,898 INFO L225 Difference]: With dead ends: 1146 [2021-02-23 16:28:13,898 INFO L226 Difference]: Without dead ends: 635 [2021-02-23 16:28:13,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:28:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-02-23 16:28:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 613. [2021-02-23 16:28:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2021-02-23 16:28:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 672 transitions. [2021-02-23 16:28:14,199 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 672 transitions. Word has length 165 [2021-02-23 16:28:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:14,200 INFO L480 AbstractCegarLoop]: Abstraction has 613 states and 672 transitions. [2021-02-23 16:28:14,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 16:28:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 672 transitions. [2021-02-23 16:28:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-02-23 16:28:14,204 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:14,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:28:14,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:28:14,205 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2036249170, now seen corresponding path program 1 times [2021-02-23 16:28:14,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:14,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690108374] [2021-02-23 16:28:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY