/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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:32:17,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:32:17,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:32:17,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:32:17,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:32:17,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:32:17,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:32:17,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:32:17,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:32:17,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:32:17,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:32:17,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:32:17,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:32:17,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:32:17,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:32:17,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:32:17,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:32:17,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:32:17,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:32:17,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:32:17,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:32:17,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:32:17,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:32:17,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:32:17,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:32:17,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:32:17,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:32:17,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:32:17,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:32:17,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:32:17,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:32:17,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:32:17,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:32:17,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:32:17,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:32:17,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:32:17,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:32:17,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:32:17,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:32:17,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:32:17,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:32:17,352 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 16:32:17,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:32:17,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:32:17,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:32:17,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:32:17,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:32:17,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:32:17,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:32:17,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:32:17,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:32:17,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:32:17,386 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:32:17,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:32:17,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:32:17,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:32:17,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:32:17,387 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:32:17,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:32:17,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:32:17,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:32:17,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:32:17,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:32:17,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:32:17,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:32:17,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:32:17,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:32:17,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:32:17,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:32:17,825 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:32:17,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product11.cil.c [2021-02-23 16:32:17,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee8c9d74/36b16304bdfe45318e1102ad24ac4c60/FLAG2e22c4927 [2021-02-23 16:32:18,591 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:32:18,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product11.cil.c [2021-02-23 16:32:18,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee8c9d74/36b16304bdfe45318e1102ad24ac4c60/FLAG2e22c4927 [2021-02-23 16:32:18,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee8c9d74/36b16304bdfe45318e1102ad24ac4c60 [2021-02-23 16:32:18,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:32:18,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:32:18,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:32:18,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:32:18,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:32:18,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:32:18" (1/1) ... [2021-02-23 16:32:18,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@942dee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:18, skipping insertion in model container [2021-02-23 16:32:18,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:32:18" (1/1) ... [2021-02-23 16:32:18,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:32:19,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:32:19,190 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_product11.cil.c[1281,1294] [2021-02-23 16:32:19,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:32:19,417 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:32:19,435 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_product11.cil.c[1281,1294] [2021-02-23 16:32:19,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:32:19,529 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:32:19,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19 WrapperNode [2021-02-23 16:32:19,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:32:19,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:32:19,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:32:19,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:32:19,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (1/1) ... [2021-02-23 16:32:19,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (1/1) ... [2021-02-23 16:32:19,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (1/1) ... [2021-02-23 16:32:19,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (1/1) ... [2021-02-23 16:32:19,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (1/1) ... [2021-02-23 16:32:19,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (1/1) ... [2021-02-23 16:32:19,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (1/1) ... [2021-02-23 16:32:19,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:32:19,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:32:19,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:32:19,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:32:19,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (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 16:32:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:32:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:32:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:32:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:32:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:32:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:32:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:32:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:32:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:32:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:32:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:32:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:32:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:32:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:32:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:32:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:32:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:32:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:32:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:32:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:32:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:32:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:32:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:32:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:32:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:32:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:32:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:32:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:32:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:32:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:32:19,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:32:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:32:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:32:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:32:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:32:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:32:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:32:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:32:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:32:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:32:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:32:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:32:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:32:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:32:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:32:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:32:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:32:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:32:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:32:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:32:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:32:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:32:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:32:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:32:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:32:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:32:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:32:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:32:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:32:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:32:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:32:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:32:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:32:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:32:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:32:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:32:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:32:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:32:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:32:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:32:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:32:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:32:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:32:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:32:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:32:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:32:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:32:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:32:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:32:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:32:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:32:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:32:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:32:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:32:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:32:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:32:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:32:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:32:21,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:32:21,239 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:32:21,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:32:21 BoogieIcfgContainer [2021-02-23 16:32:21,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:32:21,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:32:21,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:32:21,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:32:21,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:32:18" (1/3) ... [2021-02-23 16:32:21,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108cf539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:32:21, skipping insertion in model container [2021-02-23 16:32:21,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:32:19" (2/3) ... [2021-02-23 16:32:21,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108cf539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:32:21, skipping insertion in model container [2021-02-23 16:32:21,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:32:21" (3/3) ... [2021-02-23 16:32:21,252 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product11.cil.c [2021-02-23 16:32:21,259 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:32:21,265 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:32:21,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:32:21,312 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:32:21,312 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:32:21,312 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:32:21,312 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:32:21,312 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:32:21,313 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:32:21,313 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:32:21,313 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:32:21,336 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states. [2021-02-23 16:32:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:32:21,356 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:21,357 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 16:32:21,358 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:21,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2144888488, now seen corresponding path program 1 times [2021-02-23 16:32:21,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:21,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439105738] [2021-02-23 16:32:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:21,462 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:21,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:21,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:21,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:21,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,203 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:22,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:22,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:22,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:22,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:22,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:22,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:22,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:22,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:22,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:22,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:32:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:22,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:22,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:32:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:22,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:22,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:22,413 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 16:32:22,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439105738] [2021-02-23 16:32:22,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:22,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:32:22,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108446208] [2021-02-23 16:32:22,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:32:22,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:22,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:32:22,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:32:22,447 INFO L87 Difference]: Start difference. First operand 256 states. Second operand 3 states. [2021-02-23 16:32:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:23,980 INFO L93 Difference]: Finished difference Result 369 states and 443 transitions. [2021-02-23 16:32:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:32:23,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:32:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:24,001 INFO L225 Difference]: With dead ends: 369 [2021-02-23 16:32:24,001 INFO L226 Difference]: Without dead ends: 243 [2021-02-23 16:32:24,006 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 16:32:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-23 16:32:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 204. [2021-02-23 16:32:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-02-23 16:32:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2021-02-23 16:32:24,138 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 147 [2021-02-23 16:32:24,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:24,139 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2021-02-23 16:32:24,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:32:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2021-02-23 16:32:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:32:24,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:24,145 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 16:32:24,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:32:24,145 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:24,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:24,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1468067310, now seen corresponding path program 1 times [2021-02-23 16:32:24,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:24,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835005025] [2021-02-23 16:32:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:24,152 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:24,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,669 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:24,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:32:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:32:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:24,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:24,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:24,841 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 16:32:24,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835005025] [2021-02-23 16:32:24,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:24,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:32:24,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260782272] [2021-02-23 16:32:24,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:32:24,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:24,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:32:24,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:32:24,849 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand 4 states. [2021-02-23 16:32:25,629 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:32:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:26,303 INFO L93 Difference]: Finished difference Result 276 states and 307 transitions. [2021-02-23 16:32:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:32:26,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:32:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:26,308 INFO L225 Difference]: With dead ends: 276 [2021-02-23 16:32:26,309 INFO L226 Difference]: Without dead ends: 226 [2021-02-23 16:32:26,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:32:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-23 16:32:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 194. [2021-02-23 16:32:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-02-23 16:32:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 205 transitions. [2021-02-23 16:32:26,417 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 205 transitions. Word has length 148 [2021-02-23 16:32:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:26,421 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 205 transitions. [2021-02-23 16:32:26,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:32:26,421 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 205 transitions. [2021-02-23 16:32:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:32:26,432 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:26,433 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 16:32:26,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:32:26,434 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:26,434 INFO L82 PathProgramCache]: Analyzing trace with hash 276052010, now seen corresponding path program 1 times [2021-02-23 16:32:26,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:26,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709641594] [2021-02-23 16:32:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:26,439 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:26,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:26,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:26,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:26,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:26,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:26,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:26,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:26,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:26,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,054 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:27,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:32:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:27,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:27,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:27,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:32:27,205 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:32:27,207 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:32:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:27,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:32:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:27,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:32:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:27,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:27,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:27,292 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 16:32:27,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709641594] [2021-02-23 16:32:27,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:27,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:32:27,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119380943] [2021-02-23 16:32:27,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:32:27,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:27,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:32:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:32:27,303 INFO L87 Difference]: Start difference. First operand 194 states and 205 transitions. Second operand 9 states. [2021-02-23 16:32:27,955 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:28,423 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:32:28,790 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:32:29,182 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:29,594 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:29,977 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:31,085 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:32:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:32,444 INFO L93 Difference]: Finished difference Result 475 states and 544 transitions. [2021-02-23 16:32:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:32:32,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:32:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:32,451 INFO L225 Difference]: With dead ends: 475 [2021-02-23 16:32:32,451 INFO L226 Difference]: Without dead ends: 396 [2021-02-23 16:32:32,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:32:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-02-23 16:32:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 325. [2021-02-23 16:32:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-23 16:32:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 357 transitions. [2021-02-23 16:32:32,611 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 357 transitions. Word has length 157 [2021-02-23 16:32:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:32,612 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 357 transitions. [2021-02-23 16:32:32,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:32:32,612 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 357 transitions. [2021-02-23 16:32:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-23 16:32:32,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:32,615 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 16:32:32,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:32:32,615 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1789875577, now seen corresponding path program 1 times [2021-02-23 16:32:32,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:32,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830936164] [2021-02-23 16:32:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:32,620 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:32,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:32,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:32,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:32,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:32,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:32,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:32,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:32,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:32,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:32,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:32:32,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:32,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,108 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:32:33,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:32:33,207 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:32:33,208 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:32:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:32:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:32:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:33,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:32:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:33,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:33,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:33,321 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 16:32:33,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830936164] [2021-02-23 16:32:33,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:33,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:32:33,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711698477] [2021-02-23 16:32:33,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:32:33,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:33,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:32:33,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:32:33,324 INFO L87 Difference]: Start difference. First operand 325 states and 357 transitions. Second operand 13 states. [2021-02-23 16:32:34,029 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:34,562 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:32:34,966 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:32:35,368 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:35,775 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:36,163 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:36,956 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:32:37,877 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:38,296 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:38,763 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:39,171 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:32:39,562 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:32:39,934 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:40,305 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:32:40,696 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:41,078 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:41,496 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:41,948 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:32:42,342 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:32:42,757 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:32:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:43,599 INFO L93 Difference]: Finished difference Result 931 states and 1116 transitions. [2021-02-23 16:32:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 16:32:43,600 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2021-02-23 16:32:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:43,607 INFO L225 Difference]: With dead ends: 931 [2021-02-23 16:32:43,607 INFO L226 Difference]: Without dead ends: 721 [2021-02-23 16:32:43,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 16:32:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-02-23 16:32:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 678. [2021-02-23 16:32:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2021-02-23 16:32:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 776 transitions. [2021-02-23 16:32:43,922 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 776 transitions. Word has length 160 [2021-02-23 16:32:43,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:43,922 INFO L480 AbstractCegarLoop]: Abstraction has 678 states and 776 transitions. [2021-02-23 16:32:43,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:32:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 776 transitions. [2021-02-23 16:32:43,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:32:43,926 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:43,926 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 16:32:43,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:32:43,927 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash -838787005, now seen corresponding path program 1 times [2021-02-23 16:32:43,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:43,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600188967] [2021-02-23 16:32:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:32:43,931 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:32:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:43,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:43,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:44,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:44,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:44,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:44,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,306 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:32:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:32:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:32:44,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:32:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:32:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:32:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:32:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:32:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:32:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:32:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:32:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:32:44,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:32:44,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:32:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:32:44,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600188967] [2021-02-23 16:32:44,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:32:44,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 16:32:44,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868946586] [2021-02-23 16:32:44,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 16:32:44,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:32:44,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 16:32:44,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:32:44,477 INFO L87 Difference]: Start difference. First operand 678 states and 776 transitions. Second operand 5 states. [2021-02-23 16:32:45,117 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:32:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:32:46,106 INFO L93 Difference]: Finished difference Result 1146 states and 1341 transitions. [2021-02-23 16:32:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 16:32:46,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2021-02-23 16:32:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:32:46,115 INFO L225 Difference]: With dead ends: 1146 [2021-02-23 16:32:46,115 INFO L226 Difference]: Without dead ends: 635 [2021-02-23 16:32:46,123 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 16:32:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-02-23 16:32:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 613. [2021-02-23 16:32:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2021-02-23 16:32:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 672 transitions. [2021-02-23 16:32:46,398 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 672 transitions. Word has length 165 [2021-02-23 16:32:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:32:46,399 INFO L480 AbstractCegarLoop]: Abstraction has 613 states and 672 transitions. [2021-02-23 16:32:46,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 16:32:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 672 transitions. [2021-02-23 16:32:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-02-23 16:32:46,403 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:32:46,404 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 16:32:46,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:32:46,405 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:32:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:32:46,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1235020703, now seen corresponding path program 1 times [2021-02-23 16:32:46,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:32:46,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937595334] [2021-02-23 16:32:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY