/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_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:01:08,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:01:08,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:01:08,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:01:08,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:01:08,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:01:08,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:01:08,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:01:08,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:01:08,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:01:08,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:01:08,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:01:08,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:01:08,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:01:08,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:01:08,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:01:08,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:01:08,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:01:08,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:01:08,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:01:08,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:01:08,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:01:08,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:01:08,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:01:08,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:01:08,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:01:08,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:01:08,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:01:08,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:01:08,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:01:08,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:01:08,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:01:08,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:01:08,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:01:08,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:01:08,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:01:08,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:01:08,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:01:08,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:01:08,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:01:08,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:01:08,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:01:08,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:01:08,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:01:08,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:01:08,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:01:08,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:01:08,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:01:08,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:01:08,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:01:08,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:01:08,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:01:08,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:01:08,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:01:08,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:01:08,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:01:08,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:01:08,499 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:01:08,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:01:08,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:01:08,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:01:08,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:01:08,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:01:08,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:01:08,500 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:01:08,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:01:08,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:01:08,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:01:08,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:01:08,887 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:01:08,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product05.cil.c [2021-02-21 19:01:08,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9875cc7f/60f0cb12009749aea608b5850008ff9f/FLAG57a19ac7f [2021-02-21 19:01:09,630 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:01:09,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product05.cil.c [2021-02-21 19:01:09,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9875cc7f/60f0cb12009749aea608b5850008ff9f/FLAG57a19ac7f [2021-02-21 19:01:09,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9875cc7f/60f0cb12009749aea608b5850008ff9f [2021-02-21 19:01:09,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:01:09,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:01:09,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:01:09,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:01:09,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:01:09,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:01:09" (1/1) ... [2021-02-21 19:01:09,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2933d387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:09, skipping insertion in model container [2021-02-21 19:01:09,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:01:09" (1/1) ... [2021-02-21 19:01:10,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:01:10,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:01:10,477 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_product05.cil.c[16318,16331] [2021-02-21 19:01:10,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:01:10,507 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:01:10,651 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_product05.cil.c[16318,16331] [2021-02-21 19:01:10,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:01:10,691 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:01:10,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10 WrapperNode [2021-02-21 19:01:10,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:01:10,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:01:10,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:01:10,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:01:10,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... [2021-02-21 19:01:10,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... [2021-02-21 19:01:10,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... [2021-02-21 19:01:10,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... [2021-02-21 19:01:10,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... [2021-02-21 19:01:10,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... [2021-02-21 19:01:10,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... [2021-02-21 19:01:10,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:01:10,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:01:10,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:01:10,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:01:10,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:01:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:01:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:01:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:01:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:01:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:01:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:01:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:01:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:01:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:01:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:01:10,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:01:10,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:01:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:01:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:01:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:01:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:01:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:01:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:01:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:01:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:01:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:01:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:01:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:01:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:01:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:01:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:01:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:01:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:01:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:01:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:01:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:01:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:01:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:01:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:01:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:01:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:01:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:01:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:01:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:01:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:01:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:01:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:01:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:01:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:01:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:01:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:01:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:01:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:01:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:01:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:01:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:01:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:01:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:01:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:01:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:01:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:01:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:01:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:01:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:01:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:01:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:01:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:01:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:01:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:01:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:01:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:01:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:01:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:01:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:01:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:01:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:01:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:01:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:01:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:01:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:01:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:01:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:01:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:01:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:01:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:01:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:01:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:01:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:01:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:01:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:01:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:01:12,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:01:12,341 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:01:12,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:01:12 BoogieIcfgContainer [2021-02-21 19:01:12,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:01:12,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:01:12,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:01:12,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:01:12,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:01:09" (1/3) ... [2021-02-21 19:01:12,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592704fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:01:12, skipping insertion in model container [2021-02-21 19:01:12,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:10" (2/3) ... [2021-02-21 19:01:12,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592704fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:01:12, skipping insertion in model container [2021-02-21 19:01:12,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:01:12" (3/3) ... [2021-02-21 19:01:12,354 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product05.cil.c [2021-02-21 19:01:12,362 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:01:12,368 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:01:12,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:01:12,414 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:01:12,414 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:01:12,414 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:01:12,414 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:01:12,414 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:01:12,415 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:01:12,415 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:01:12,415 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:01:12,439 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2021-02-21 19:01:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:01:12,458 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:12,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:01:12,460 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1495387643, now seen corresponding path program 1 times [2021-02-21 19:01:12,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:12,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779279360] [2021-02-21 19:01:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:12,561 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:12,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:12,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:12,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:12,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,488 WARN L202 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:13,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:13,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:13,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:13,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:13,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:13,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:13,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:13,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:13,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:13,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:01:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:13,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:13,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:01:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:13,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:13,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:13,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779279360] [2021-02-21 19:01:13,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:13,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:01:13,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606025561] [2021-02-21 19:01:13,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:01:13,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:13,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:01:13,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:01:13,744 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 3 states. [2021-02-21 19:01:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:15,280 INFO L93 Difference]: Finished difference Result 407 states and 485 transitions. [2021-02-21 19:01:15,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:01:15,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:01:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:15,299 INFO L225 Difference]: With dead ends: 407 [2021-02-21 19:01:15,299 INFO L226 Difference]: Without dead ends: 262 [2021-02-21 19:01:15,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:01:15,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-21 19:01:15,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2021-02-21 19:01:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-21 19:01:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 239 transitions. [2021-02-21 19:01:15,445 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 239 transitions. Word has length 147 [2021-02-21 19:01:15,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:15,446 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 239 transitions. [2021-02-21 19:01:15,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:01:15,447 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 239 transitions. [2021-02-21 19:01:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:01:15,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:15,451 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] [2021-02-21 19:01:15,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:01:15,452 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:15,452 INFO L82 PathProgramCache]: Analyzing trace with hash 587253761, now seen corresponding path program 1 times [2021-02-21 19:01:15,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:15,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013407692] [2021-02-21 19:01:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:15,457 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:15,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:15,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:15,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:15,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:15,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:15,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:15,937 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:15,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:01:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:01:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:16,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013407692] [2021-02-21 19:01:16,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:16,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:01:16,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531130275] [2021-02-21 19:01:16,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:01:16,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:01:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:01:16,104 INFO L87 Difference]: Start difference. First operand 223 states and 239 transitions. Second operand 4 states. [2021-02-21 19:01:16,919 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:17,724 INFO L93 Difference]: Finished difference Result 323 states and 359 transitions. [2021-02-21 19:01:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:01:17,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:01:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:17,729 INFO L225 Difference]: With dead ends: 323 [2021-02-21 19:01:17,729 INFO L226 Difference]: Without dead ends: 245 [2021-02-21 19:01:17,731 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 [2021-02-21 19:01:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-21 19:01:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-21 19:01:17,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-21 19:01:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2021-02-21 19:01:17,817 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 148 [2021-02-21 19:01:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:17,818 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2021-02-21 19:01:17,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:01:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2021-02-21 19:01:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:01:17,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:17,821 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] [2021-02-21 19:01:17,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:01:17,821 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:17,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1835193443, now seen corresponding path program 1 times [2021-02-21 19:01:17,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:17,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366608349] [2021-02-21 19:01:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:17,826 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:18,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:18,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:18,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:18,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,379 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:18,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:01:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:18,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:18,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:18,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:18,498 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:01:18,499 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:01:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:18,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:01:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:18,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:01:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:18,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:18,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:18,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366608349] [2021-02-21 19:01:18,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:18,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:01:18,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426284433] [2021-02-21 19:01:18,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:01:18,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:01:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:01:18,567 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 9 states. [2021-02-21 19:01:19,163 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:19,598 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:19,968 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:20,314 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:20,678 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:21,007 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:22,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:22,183 INFO L93 Difference]: Finished difference Result 343 states and 384 transitions. [2021-02-21 19:01:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:01:22,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:01:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:22,187 INFO L225 Difference]: With dead ends: 343 [2021-02-21 19:01:22,187 INFO L226 Difference]: Without dead ends: 245 [2021-02-21 19:01:22,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:01:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-21 19:01:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-21 19:01:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-21 19:01:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 225 transitions. [2021-02-21 19:01:22,267 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 225 transitions. Word has length 157 [2021-02-21 19:01:22,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:22,268 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 225 transitions. [2021-02-21 19:01:22,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:01:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 225 transitions. [2021-02-21 19:01:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:01:22,270 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:22,271 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] [2021-02-21 19:01:22,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:01:22,271 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash 101529302, now seen corresponding path program 1 times [2021-02-21 19:01:22,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:22,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015551682] [2021-02-21 19:01:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:22,276 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:22,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:22,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:22,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:22,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:22,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:22,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:22,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:22,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:22,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:22,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,717 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:01:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:22,801 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:01:22,802 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:01:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:01:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:01:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:01:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:22,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:01:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:22,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:22,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:22,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015551682] [2021-02-21 19:01:22,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:22,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:01:22,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400034609] [2021-02-21 19:01:22,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:01:22,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:22,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:01:22,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:01:22,928 INFO L87 Difference]: Start difference. First operand 213 states and 225 transitions. Second operand 14 states. [2021-02-21 19:01:23,727 WARN L202 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:24,150 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:24,509 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:24,887 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:25,248 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:25,617 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:26,386 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:27,442 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:27,815 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:28,275 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:28,671 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:29,024 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:29,366 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:29,731 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:30,076 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:30,426 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:30,816 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:31,304 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:31,663 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:32,067 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:33,265 INFO L93 Difference]: Finished difference Result 586 states and 704 transitions. [2021-02-21 19:01:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:01:33,266 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-21 19:01:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:33,271 INFO L225 Difference]: With dead ends: 586 [2021-02-21 19:01:33,271 INFO L226 Difference]: Without dead ends: 488 [2021-02-21 19:01:33,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:01:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-02-21 19:01:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 385. [2021-02-21 19:01:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2021-02-21 19:01:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 423 transitions. [2021-02-21 19:01:33,494 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 423 transitions. Word has length 165 [2021-02-21 19:01:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:33,495 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 423 transitions. [2021-02-21 19:01:33,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:01:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 423 transitions. [2021-02-21 19:01:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-21 19:01:33,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:33,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:01:33,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:01:33,499 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:33,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:33,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2033040578, now seen corresponding path program 1 times [2021-02-21 19:01:33,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:33,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580135387] [2021-02-21 19:01:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:33,504 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:33,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:33,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:33,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:33,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:33,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,862 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:01:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:01:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 19:01:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:01:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:34,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:34,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:01:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:34,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:34,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 19:01:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:34,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:34,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:34,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580135387] [2021-02-21 19:01:34,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:34,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:01:34,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167806926] [2021-02-21 19:01:34,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:01:34,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:34,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:01:34,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:01:34,048 INFO L87 Difference]: Start difference. First operand 385 states and 423 transitions. Second operand 6 states. [2021-02-21 19:01:34,612 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:35,265 INFO L93 Difference]: Finished difference Result 587 states and 667 transitions. [2021-02-21 19:01:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:01:35,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2021-02-21 19:01:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:35,269 INFO L225 Difference]: With dead ends: 587 [2021-02-21 19:01:35,270 INFO L226 Difference]: Without dead ends: 317 [2021-02-21 19:01:35,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:01:35,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-21 19:01:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 296. [2021-02-21 19:01:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-21 19:01:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 313 transitions. [2021-02-21 19:01:35,402 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 313 transitions. Word has length 175 [2021-02-21 19:01:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:35,402 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 313 transitions. [2021-02-21 19:01:35,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:01:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 313 transitions. [2021-02-21 19:01:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-21 19:01:35,406 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:35,406 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, 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] [2021-02-21 19:01:35,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:01:35,407 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1368335942, now seen corresponding path program 1 times [2021-02-21 19:01:35,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:35,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003843996] [2021-02-21 19:01:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:35,928 WARN L202 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 115 [2021-02-21 19:01:35,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-02-21 19:01:36,408 WARN L202 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2021-02-21 19:01:36,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258