/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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:29:03,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:29:03,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:29:03,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:29:03,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:29:03,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:29:03,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:29:03,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:29:03,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:29:03,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:29:03,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:29:03,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:29:03,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:29:03,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:29:03,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:29:03,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:29:03,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:29:03,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:29:03,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:29:03,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:29:03,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:29:03,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:29:03,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:29:03,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:29:03,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:29:03,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:29:03,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:29:03,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:29:03,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:29:03,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:29:03,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:29:03,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:29:03,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:29:03,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:29:03,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:29:03,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:29:03,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:29:03,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:29:03,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:29:03,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:29:03,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:29:03,876 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 19:29:03,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:29:03,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:29:03,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:29:03,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:29:03,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:29:03,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:29:03,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:29:03,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:29:03,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:29:03,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:29:03,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:29:03,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:29:03,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:29:03,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:29:03,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:29:03,923 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:29:03,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:29:03,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:29:03,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:29:03,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:29:03,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:29:03,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:29:03,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:29:04,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:29:04,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:29:04,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:29:04,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:29:04,512 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:29:04,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c [2021-02-21 19:29:04,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8026e7f/532c027457d64b88b8bb8dca7cc6ee24/FLAG4ef293bbd [2021-02-21 19:29:05,505 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:29:05,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c [2021-02-21 19:29:05,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8026e7f/532c027457d64b88b8bb8dca7cc6ee24/FLAG4ef293bbd [2021-02-21 19:29:05,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8026e7f/532c027457d64b88b8bb8dca7cc6ee24 [2021-02-21 19:29:05,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:29:05,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:29:05,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:05,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:29:05,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:29:05,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:05" (1/1) ... [2021-02-21 19:29:05,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6fe307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:05, skipping insertion in model container [2021-02-21 19:29:05,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:05" (1/1) ... [2021-02-21 19:29:05,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:29:05,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:29:06,336 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_product30.cil.c[17899,17912] [2021-02-21 19:29:06,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:06,355 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:29:06,452 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c[17899,17912] [2021-02-21 19:29:06,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:06,499 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:29:06,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06 WrapperNode [2021-02-21 19:29:06,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:06,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:29:06,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:29:06,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:29:06,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (1/1) ... [2021-02-21 19:29:06,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (1/1) ... [2021-02-21 19:29:06,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (1/1) ... [2021-02-21 19:29:06,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (1/1) ... [2021-02-21 19:29:06,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (1/1) ... [2021-02-21 19:29:06,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (1/1) ... [2021-02-21 19:29:06,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (1/1) ... [2021-02-21 19:29:06,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:29:06,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:29:06,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:29:06,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:29:06,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (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 19:29:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:29:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:29:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:29:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:29:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:29:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:29:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:29:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:29:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:29:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:29:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:29:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:29:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:29:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:29:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:29:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:29:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:29:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:29:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:29:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:29:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:29:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:29:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:29:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:29:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:29:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:29:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:29:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:29:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:29:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:29:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:29:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:29:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:29:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:29:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:29:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:29:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:29:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:29:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:29:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:29:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:29:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:29:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:29:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:29:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:29:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:29:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:29:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:29:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:29:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:29:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:29:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:29:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:29:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:29:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:29:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:29:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:29:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:29:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:29:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:29:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:29:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:29:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:29:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:29:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:29:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:29:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:29:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:29:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:29:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:29:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:29:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:29:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:29:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:29:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:29:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:29:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:29:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:29:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:29:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:29:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:29:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:29:08,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:29:08,478 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:29:08,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:08 BoogieIcfgContainer [2021-02-21 19:29:08,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:29:08,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:29:08,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:29:08,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:29:08,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:29:05" (1/3) ... [2021-02-21 19:29:08,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392020fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:08, skipping insertion in model container [2021-02-21 19:29:08,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:06" (2/3) ... [2021-02-21 19:29:08,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392020fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:08, skipping insertion in model container [2021-02-21 19:29:08,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:08" (3/3) ... [2021-02-21 19:29:08,494 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product30.cil.c [2021-02-21 19:29:08,502 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:29:08,509 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:29:08,532 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:29:08,561 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:29:08,562 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:29:08,562 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:29:08,562 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:29:08,562 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:29:08,563 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:29:08,563 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:29:08,563 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:29:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states. [2021-02-21 19:29:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:29:08,616 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:08,618 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 19:29:08,620 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:08,628 INFO L82 PathProgramCache]: Analyzing trace with hash -25854172, now seen corresponding path program 1 times [2021-02-21 19:29:08,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:08,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989184739] [2021-02-21 19:29:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:08,749 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,606 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:29:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:09,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:09,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:09,894 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 19:29:09,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989184739] [2021-02-21 19:29:09,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:09,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:29:09,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975423282] [2021-02-21 19:29:09,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:29:09,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:09,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:29:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:09,932 INFO L87 Difference]: Start difference. First operand 320 states. Second operand 3 states. [2021-02-21 19:29:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:11,912 INFO L93 Difference]: Finished difference Result 480 states and 570 transitions. [2021-02-21 19:29:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:29:11,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:29:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:11,932 INFO L225 Difference]: With dead ends: 480 [2021-02-21 19:29:11,933 INFO L226 Difference]: Without dead ends: 300 [2021-02-21 19:29:11,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-21 19:29:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 258. [2021-02-21 19:29:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-02-21 19:29:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 279 transitions. [2021-02-21 19:29:12,198 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 279 transitions. Word has length 147 [2021-02-21 19:29:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:12,203 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 279 transitions. [2021-02-21 19:29:12,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:29:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 279 transitions. [2021-02-21 19:29:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:29:12,220 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:12,220 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 19:29:12,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:29:12,221 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:12,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1378358268, now seen corresponding path program 1 times [2021-02-21 19:29:12,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:12,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255668246] [2021-02-21 19:29:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:12,237 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:12,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,797 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:29:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:29:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:12,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:12,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:12,946 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 19:29:12,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255668246] [2021-02-21 19:29:12,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:12,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:29:12,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394890977] [2021-02-21 19:29:12,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:29:12,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:12,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:29:12,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:29:12,950 INFO L87 Difference]: Start difference. First operand 258 states and 279 transitions. Second operand 4 states. [2021-02-21 19:29:13,885 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:15,129 INFO L93 Difference]: Finished difference Result 392 states and 440 transitions. [2021-02-21 19:29:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:29:15,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:29:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:15,136 INFO L225 Difference]: With dead ends: 392 [2021-02-21 19:29:15,136 INFO L226 Difference]: Without dead ends: 283 [2021-02-21 19:29:15,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:29:15,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-02-21 19:29:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 248. [2021-02-21 19:29:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 19:29:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 266 transitions. [2021-02-21 19:29:15,284 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 266 transitions. Word has length 148 [2021-02-21 19:29:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:15,285 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 266 transitions. [2021-02-21 19:29:15,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:29:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 266 transitions. [2021-02-21 19:29:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:29:15,289 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:15,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:15,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:29:15,290 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:15,290 INFO L82 PathProgramCache]: Analyzing trace with hash -47677773, now seen corresponding path program 1 times [2021-02-21 19:29:15,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:15,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939098674] [2021-02-21 19:29:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:15,296 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:15,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:15,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:15,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,761 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:15,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:15,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:29:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:29:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:29:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:15,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:15,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:15,964 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 19:29:15,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939098674] [2021-02-21 19:29:15,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:15,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:29:15,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948602977] [2021-02-21 19:29:15,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:29:15,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:29:15,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:29:15,970 INFO L87 Difference]: Start difference. First operand 248 states and 266 transitions. Second operand 10 states. [2021-02-21 19:29:16,812 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:17,309 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:17,709 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:29:18,119 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:18,479 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:18,893 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:20,860 INFO L93 Difference]: Finished difference Result 438 states and 502 transitions. [2021-02-21 19:29:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:29:20,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:29:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:20,865 INFO L225 Difference]: With dead ends: 438 [2021-02-21 19:29:20,866 INFO L226 Difference]: Without dead ends: 305 [2021-02-21 19:29:20,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:29:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-21 19:29:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 248. [2021-02-21 19:29:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 19:29:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 265 transitions. [2021-02-21 19:29:20,973 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 265 transitions. Word has length 161 [2021-02-21 19:29:20,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:20,974 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 265 transitions. [2021-02-21 19:29:20,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:29:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 265 transitions. [2021-02-21 19:29:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-21 19:29:20,977 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:20,978 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] [2021-02-21 19:29:20,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:29:20,978 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:20,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1462892453, now seen corresponding path program 1 times [2021-02-21 19:29:20,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:20,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472340525] [2021-02-21 19:29:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:20,984 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:21,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:21,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:21,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:21,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:21,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:21,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:21,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:21,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:21,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:21,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,513 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:21,650 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:21,652 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:29:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:29:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:29:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:21,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-21 19:29:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:21,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:21,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:21,828 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 19:29:21,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472340525] [2021-02-21 19:29:21,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:21,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:29:21,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278677869] [2021-02-21 19:29:21,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:29:21,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:21,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:29:21,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:29:21,833 INFO L87 Difference]: Start difference. First operand 248 states and 265 transitions. Second operand 15 states. [2021-02-21 19:29:22,704 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:23,225 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:23,670 WARN L202 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:24,091 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:24,505 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:24,914 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:25,767 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:27,713 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:28,168 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:28,805 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:29,291 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:29,677 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:30,093 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:30,528 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:30,935 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:31,348 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:31,892 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:32,459 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:32,904 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:33,523 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:36,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:36,165 INFO L93 Difference]: Finished difference Result 868 states and 1087 transitions. [2021-02-21 19:29:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:29:36,165 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2021-02-21 19:29:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:36,174 INFO L225 Difference]: With dead ends: 868 [2021-02-21 19:29:36,175 INFO L226 Difference]: Without dead ends: 735 [2021-02-21 19:29:36,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:29:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-02-21 19:29:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 492. [2021-02-21 19:29:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2021-02-21 19:29:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 546 transitions. [2021-02-21 19:29:36,430 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 546 transitions. Word has length 174 [2021-02-21 19:29:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:36,431 INFO L480 AbstractCegarLoop]: Abstraction has 492 states and 546 transitions. [2021-02-21 19:29:36,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:29:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 546 transitions. [2021-02-21 19:29:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-21 19:29:36,435 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:36,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:36,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:29:36,436 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:36,437 INFO L82 PathProgramCache]: Analyzing trace with hash 481774433, now seen corresponding path program 1 times [2021-02-21 19:29:36,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:36,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665235569] [2021-02-21 19:29:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:36,441 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:36,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:36,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:36,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:36,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:36,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,833 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:29:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 19:29:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:29:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-21 19:29:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:36,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:36,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:37,016 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 19:29:37,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665235569] [2021-02-21 19:29:37,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:37,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:29:37,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611290405] [2021-02-21 19:29:37,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:29:37,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:29:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:29:37,019 INFO L87 Difference]: Start difference. First operand 492 states and 546 transitions. Second operand 7 states. [2021-02-21 19:29:37,701 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:38,834 INFO L93 Difference]: Finished difference Result 787 states and 921 transitions. [2021-02-21 19:29:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:29:38,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2021-02-21 19:29:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:38,837 INFO L225 Difference]: With dead ends: 787 [2021-02-21 19:29:38,838 INFO L226 Difference]: Without dead ends: 410 [2021-02-21 19:29:38,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:29:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-02-21 19:29:38,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 323. [2021-02-21 19:29:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-02-21 19:29:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 340 transitions. [2021-02-21 19:29:38,982 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 340 transitions. Word has length 179 [2021-02-21 19:29:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:38,983 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 340 transitions. [2021-02-21 19:29:38,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:29:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 340 transitions. [2021-02-21 19:29:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-02-21 19:29:38,987 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:38,988 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, 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 19:29:38,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:29:38,988 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash -684674424, now seen corresponding path program 1 times [2021-02-21 19:29:38,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:38,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119185480] [2021-02-21 19:29:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:39,557 WARN L202 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2021-02-21 19:29:39,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:39,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-02-21 19:29:39,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:39,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:40,177 WARN L202 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 102 [2021-02-21 19:29:40,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:40,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 252 [2021-02-21 19:29:40,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:40,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:40,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:40,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1