/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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:15:12,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:15:12,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:15:12,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:15:12,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:15:12,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:15:12,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:15:12,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:15:12,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:15:12,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:15:12,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:15:12,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:15:12,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:15:12,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:15:12,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:15:12,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:15:12,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:15:12,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:15:12,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:15:12,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:15:12,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:15:12,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:15:12,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:15:12,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:15:12,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:15:12,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:15:12,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:15:12,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:15:12,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:15:12,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:15:12,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:15:12,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:15:12,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:15:12,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:15:12,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:15:12,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:15:12,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:15:12,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:15:12,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:15:12,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:15:12,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:15:12,960 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 19:15:12,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:15:12,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:15:12,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:15:13,000 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:15:13,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:15:13,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:15:13,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:15:13,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:15:13,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:15:13,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:15:13,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:15:13,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:15:13,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:15:13,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:15:13,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:15:13,006 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:15:13,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:15:13,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:15:13,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:15:13,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:15:13,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:15:13,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:15:13,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:15:13,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:15:13,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:15:13,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:15:13,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:15:13,615 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:15:13,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product17.cil.c [2021-02-21 19:15:13,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd46a8556/1fb2a1b5687f49efab38b555d2eeb07b/FLAGf7ca7b6a8 [2021-02-21 19:15:14,548 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:15:14,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product17.cil.c [2021-02-21 19:15:14,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd46a8556/1fb2a1b5687f49efab38b555d2eeb07b/FLAGf7ca7b6a8 [2021-02-21 19:15:14,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd46a8556/1fb2a1b5687f49efab38b555d2eeb07b [2021-02-21 19:15:14,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:15:14,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:15:14,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:14,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:15:14,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:15:14,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:15:14" (1/1) ... [2021-02-21 19:15:14,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48542a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:14, skipping insertion in model container [2021-02-21 19:15:14,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:15:14" (1/1) ... [2021-02-21 19:15:14,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:15:14,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:15:15,217 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_product17.cil.c[2999,3012] [2021-02-21 19:15:15,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:15,426 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:15:15,492 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_product17.cil.c[2999,3012] [2021-02-21 19:15:15,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:15:15,661 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:15:15,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15 WrapperNode [2021-02-21 19:15:15,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:15:15,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:15:15,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:15:15,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:15:15,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (1/1) ... [2021-02-21 19:15:15,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (1/1) ... [2021-02-21 19:15:15,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (1/1) ... [2021-02-21 19:15:15,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (1/1) ... [2021-02-21 19:15:15,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (1/1) ... [2021-02-21 19:15:15,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (1/1) ... [2021-02-21 19:15:15,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (1/1) ... [2021-02-21 19:15:15,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:15:15,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:15:15,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:15:15,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:15:15,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (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 19:15:16,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:15:16,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:15:16,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:15:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:15:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:15:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:15:16,073 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:15:16,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:15:16,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:15:16,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:15:16,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:15:16,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:15:16,075 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:15:16,076 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:15:16,076 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:15:16,076 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:15:16,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:15:16,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:15:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:15:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:15:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:15:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:15:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:15:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:15:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:15:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:15:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:15:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:15:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:15:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:15:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:15:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:15:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:15:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:15:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:15:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:15:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:15:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:15:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:15:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:15:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:15:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:15:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:15:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:15:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:15:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:15:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:15:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:15:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:15:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:15:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:15:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:15:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:15:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:15:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:15:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:15:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:15:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:15:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:15:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:15:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:15:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:15:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:15:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:15:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:15:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:15:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:15:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:15:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:15:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:15:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:15:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:15:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:15:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:15:17,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:15:17,958 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:15:17,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:17 BoogieIcfgContainer [2021-02-21 19:15:17,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:15:17,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:15:17,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:15:17,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:15:17,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:15:14" (1/3) ... [2021-02-21 19:15:17,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598267f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:17, skipping insertion in model container [2021-02-21 19:15:17,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:15:15" (2/3) ... [2021-02-21 19:15:17,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598267f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:15:17, skipping insertion in model container [2021-02-21 19:15:17,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:15:17" (3/3) ... [2021-02-21 19:15:17,976 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product17.cil.c [2021-02-21 19:15:17,986 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:15:17,996 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:15:18,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:15:18,060 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:15:18,061 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:15:18,062 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:15:18,062 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:15:18,062 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:15:18,062 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:15:18,063 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:15:18,063 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:15:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2021-02-21 19:15:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:15:18,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:18,118 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 19:15:18,119 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:18,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1252926623, now seen corresponding path program 1 times [2021-02-21 19:15:18,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:18,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817294469] [2021-02-21 19:15:18,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:18,261 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:18,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:18,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:18,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,276 WARN L202 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:19,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:19,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:19,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:19,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:19,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:19,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:19,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:19,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:19,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:19,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:19,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:15:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:19,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:19,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:19,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:19,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:19,555 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 19:15:19,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817294469] [2021-02-21 19:15:19,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:19,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:15:19,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638790904] [2021-02-21 19:15:19,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:15:19,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:19,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:15:19,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:15:19,592 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2021-02-21 19:15:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:21,757 INFO L93 Difference]: Finished difference Result 419 states and 499 transitions. [2021-02-21 19:15:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:15:21,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:15:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:21,783 INFO L225 Difference]: With dead ends: 419 [2021-02-21 19:15:21,784 INFO L226 Difference]: Without dead ends: 268 [2021-02-21 19:15:21,793 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 19:15:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-02-21 19:15:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 229. [2021-02-21 19:15:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-21 19:15:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 246 transitions. [2021-02-21 19:15:22,000 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 246 transitions. Word has length 147 [2021-02-21 19:15:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:22,003 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 246 transitions. [2021-02-21 19:15:22,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:15:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 246 transitions. [2021-02-21 19:15:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:15:22,009 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:22,010 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 19:15:22,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:15:22,010 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:22,011 INFO L82 PathProgramCache]: Analyzing trace with hash -794316413, now seen corresponding path program 1 times [2021-02-21 19:15:22,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:22,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231319484] [2021-02-21 19:15:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:22,022 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:22,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,608 WARN L202 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:15:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:15:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:22,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:22,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:22,852 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 19:15:22,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231319484] [2021-02-21 19:15:22,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:22,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:15:22,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102354057] [2021-02-21 19:15:22,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:15:22,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:22,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:15:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:15:22,862 INFO L87 Difference]: Start difference. First operand 229 states and 246 transitions. Second operand 4 states. [2021-02-21 19:15:23,907 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:24,999 INFO L93 Difference]: Finished difference Result 335 states and 373 transitions. [2021-02-21 19:15:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:15:25,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:15:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:25,005 INFO L225 Difference]: With dead ends: 335 [2021-02-21 19:15:25,005 INFO L226 Difference]: Without dead ends: 251 [2021-02-21 19:15:25,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:15:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-21 19:15:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-21 19:15:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-21 19:15:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 233 transitions. [2021-02-21 19:15:25,114 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 233 transitions. Word has length 148 [2021-02-21 19:15:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:25,115 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 233 transitions. [2021-02-21 19:15:25,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:15:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 233 transitions. [2021-02-21 19:15:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:15:25,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:25,119 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 19:15:25,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:15:25,119 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1387373773, now seen corresponding path program 1 times [2021-02-21 19:15:25,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:25,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451152079] [2021-02-21 19:15:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:25,125 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:25,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:25,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:25,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:25,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,693 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:25,863 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:25,864 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:15:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:15:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:25,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:25,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:25,967 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 19:15:25,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451152079] [2021-02-21 19:15:25,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:25,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:15:25,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113779755] [2021-02-21 19:15:25,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:15:25,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:25,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:15:25,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:15:25,972 INFO L87 Difference]: Start difference. First operand 219 states and 233 transitions. Second operand 9 states. [2021-02-21 19:15:26,759 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:27,297 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:27,745 WARN L202 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:28,180 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:28,621 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:29,036 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:30,791 INFO L93 Difference]: Finished difference Result 355 states and 398 transitions. [2021-02-21 19:15:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:15:30,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:15:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:30,797 INFO L225 Difference]: With dead ends: 355 [2021-02-21 19:15:30,797 INFO L226 Difference]: Without dead ends: 251 [2021-02-21 19:15:30,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:15:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-21 19:15:30,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-21 19:15:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-21 19:15:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 232 transitions. [2021-02-21 19:15:30,940 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 232 transitions. Word has length 157 [2021-02-21 19:15:30,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:30,940 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 232 transitions. [2021-02-21 19:15:30,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:15:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 232 transitions. [2021-02-21 19:15:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:15:30,945 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:30,945 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 19:15:30,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:15:30,947 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:30,948 INFO L82 PathProgramCache]: Analyzing trace with hash 936594464, now seen corresponding path program 1 times [2021-02-21 19:15:30,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:30,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264658623] [2021-02-21 19:15:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:30,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:31,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:31,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:31,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:31,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:31,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:15:31,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,503 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:15:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:15:31,625 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:15:31,628 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:15:31,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:15:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:15:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:15:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:15:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:31,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:31,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:31,798 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 19:15:31,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264658623] [2021-02-21 19:15:31,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:31,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:15:31,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103681134] [2021-02-21 19:15:31,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:15:31,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:31,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:15:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:15:31,802 INFO L87 Difference]: Start difference. First operand 219 states and 232 transitions. Second operand 14 states. [2021-02-21 19:15:32,649 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:33,202 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:33,620 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:34,060 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:34,522 WARN L202 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:34,963 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:35,955 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:15:37,312 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:37,751 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:38,262 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:38,783 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:15:39,193 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:39,614 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:40,052 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:15:40,464 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:40,880 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:41,400 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:42,080 WARN L202 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:15:42,591 WARN L202 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:15:43,111 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:15:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:44,600 INFO L93 Difference]: Finished difference Result 610 states and 732 transitions. [2021-02-21 19:15:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:15:44,601 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-21 19:15:44,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:44,612 INFO L225 Difference]: With dead ends: 610 [2021-02-21 19:15:44,612 INFO L226 Difference]: Without dead ends: 506 [2021-02-21 19:15:44,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:15:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-02-21 19:15:44,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 403. [2021-02-21 19:15:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-21 19:15:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 444 transitions. [2021-02-21 19:15:44,893 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 444 transitions. Word has length 165 [2021-02-21 19:15:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:44,895 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 444 transitions. [2021-02-21 19:15:44,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:15:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 444 transitions. [2021-02-21 19:15:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 19:15:44,898 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:44,898 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] [2021-02-21 19:15:44,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:15:44,899 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1110733140, now seen corresponding path program 1 times [2021-02-21 19:15:44,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:44,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864091845] [2021-02-21 19:15:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:15:44,904 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:15:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:45,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:45,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:45,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:45,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:45,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,395 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:15:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:15:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:15:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:15:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:15:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:15:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:15:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 19:15:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:15:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:15:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 19:15:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 19:15:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:15:45,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:15:45,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:15:45,624 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 19:15:45,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864091845] [2021-02-21 19:15:45,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:15:45,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:15:45,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003174498] [2021-02-21 19:15:45,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:15:45,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:15:45,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:15:45,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:15:45,637 INFO L87 Difference]: Start difference. First operand 403 states and 444 transitions. Second operand 6 states. [2021-02-21 19:15:46,408 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:15:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:15:47,250 INFO L93 Difference]: Finished difference Result 605 states and 688 transitions. [2021-02-21 19:15:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:15:47,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-21 19:15:47,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:15:47,255 INFO L225 Difference]: With dead ends: 605 [2021-02-21 19:15:47,256 INFO L226 Difference]: Without dead ends: 317 [2021-02-21 19:15:47,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:15:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-21 19:15:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 296. [2021-02-21 19:15:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-21 19:15:47,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 313 transitions. [2021-02-21 19:15:47,403 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 313 transitions. Word has length 170 [2021-02-21 19:15:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:15:47,403 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 313 transitions. [2021-02-21 19:15:47,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:15:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 313 transitions. [2021-02-21 19:15:47,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-21 19:15:47,407 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:15:47,408 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 19:15:47,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:15:47,408 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:15:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:15:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2062485954, now seen corresponding path program 1 times [2021-02-21 19:15:47,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:15:47,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011446945] [2021-02-21 19:15:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY