/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_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:08:58,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:08:58,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:08:58,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:08:58,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:08:58,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:08:58,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:08:58,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:08:58,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:08:58,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:08:58,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:08:58,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:08:58,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:08:58,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:08:58,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:08:58,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:08:58,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:08:59,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:08:59,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:08:59,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:08:59,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:08:59,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:08:59,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:08:59,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:08:59,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:08:59,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:08:59,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:08:59,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:08:59,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:08:59,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:08:59,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:08:59,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:08:59,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:08:59,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:08:59,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:08:59,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:08:59,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:08:59,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:08:59,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:08:59,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:08:59,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:08:59,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:08:59,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:08:59,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:08:59,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:08:59,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:08:59,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:08:59,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:08:59,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:08:59,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:08:59,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:08:59,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:08:59,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:08:59,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:08:59,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:08:59,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:08:59,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:08:59,098 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:08:59,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:08:59,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:08:59,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:08:59,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:08:59,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:08:59,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:08:59,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:08:59,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:08:59,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:08:59,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:08:59,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:08:59,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:08:59,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-10-23 20:08:59,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e97fa25/a59932d2976e484ca853122c155796b3/FLAGafe4dcd41 [2020-10-23 20:09:00,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:09:00,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-10-23 20:09:00,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e97fa25/a59932d2976e484ca853122c155796b3/FLAGafe4dcd41 [2020-10-23 20:09:01,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e97fa25/a59932d2976e484ca853122c155796b3 [2020-10-23 20:09:01,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:09:01,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:09:01,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:09:01,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:09:01,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:09:01,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d754c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01, skipping insertion in model container [2020-10-23 20:09:01,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:09:01,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:09:01,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:09:01,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:09:01,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:09:01,700 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:09:01,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01 WrapperNode [2020-10-23 20:09:01,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:09:01,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:09:01,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:09:01,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:09:01,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (1/1) ... [2020-10-23 20:09:01,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:09:01,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:09:01,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:09:01,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:09:01,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (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 [2020-10-23 20:09:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:09:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:09:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:09:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:09:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:09:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:09:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:09:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:09:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:09:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:09:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:09:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:09:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:09:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:09:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:09:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:09:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:09:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:09:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:09:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:09:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:09:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:09:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:09:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:09:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:09:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:09:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:09:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:09:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:09:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:09:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:09:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:09:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:09:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:09:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:09:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:09:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:09:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:09:02,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:09:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:09:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:09:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:09:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:09:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:09:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:09:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:09:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:09:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:09:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:09:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:09:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:09:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:09:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:09:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:09:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:09:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:09:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:09:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:09:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:09:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:09:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:09:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:09:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:09:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:09:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:09:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:09:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:09:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:09:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:09:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:09:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:09:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:09:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:09:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:09:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:09:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:09:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:09:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:09:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:09:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:09:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:09:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:09:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:09:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:09:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:09:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:09:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:09:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:09:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:09:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:09:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:09:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:09:03,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:09:03,668 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:09:03,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:09:03 BoogieIcfgContainer [2020-10-23 20:09:03,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:09:03,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:09:03,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:09:03,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:09:03,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:09:01" (1/3) ... [2020-10-23 20:09:03,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c7835b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:09:03, skipping insertion in model container [2020-10-23 20:09:03,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:01" (2/3) ... [2020-10-23 20:09:03,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c7835b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:09:03, skipping insertion in model container [2020-10-23 20:09:03,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:09:03" (3/3) ... [2020-10-23 20:09:03,685 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2020-10-23 20:09:03,700 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:09:03,707 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:09:03,730 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:09:03,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:09:03,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:09:03,758 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:09:03,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:09:03,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:09:03,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:09:03,759 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:09:03,759 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:09:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-10-23 20:09:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:09:03,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:03,807 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] [2020-10-23 20:09:03,808 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1783842197, now seen corresponding path program 1 times [2020-10-23 20:09:03,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:03,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181189808] [2020-10-23 20:09:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:03,908 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:04,810 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:04,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:04,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:09:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:09:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:05,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181189808] [2020-10-23 20:09:05,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:05,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:09:05,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048746544] [2020-10-23 20:09:05,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:09:05,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:05,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:09:05,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:09:05,065 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2020-10-23 20:09:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:06,822 INFO L93 Difference]: Finished difference Result 438 states and 522 transitions. [2020-10-23 20:09:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:09:06,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:09:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:06,845 INFO L225 Difference]: With dead ends: 438 [2020-10-23 20:09:06,845 INFO L226 Difference]: Without dead ends: 277 [2020-10-23 20:09:06,851 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 [2020-10-23 20:09:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-23 20:09:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 237. [2020-10-23 20:09:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-23 20:09:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 255 transitions. [2020-10-23 20:09:07,056 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 255 transitions. Word has length 148 [2020-10-23 20:09:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:07,057 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 255 transitions. [2020-10-23 20:09:07,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:09:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 255 transitions. [2020-10-23 20:09:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:09:07,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:07,062 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] [2020-10-23 20:09:07,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:09:07,063 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1405115080, now seen corresponding path program 1 times [2020-10-23 20:09:07,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:07,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104150393] [2020-10-23 20:09:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:07,071 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,633 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:07,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:09:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:09:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:07,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104150393] [2020-10-23 20:09:07,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:07,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:09:07,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169733463] [2020-10-23 20:09:07,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:09:07,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:09:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:09:07,803 INFO L87 Difference]: Start difference. First operand 237 states and 255 transitions. Second operand 4 states. [2020-10-23 20:09:08,742 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:09,817 INFO L93 Difference]: Finished difference Result 348 states and 389 transitions. [2020-10-23 20:09:09,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:09:09,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:09:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:09,822 INFO L225 Difference]: With dead ends: 348 [2020-10-23 20:09:09,822 INFO L226 Difference]: Without dead ends: 260 [2020-10-23 20:09:09,825 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 [2020-10-23 20:09:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-23 20:09:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 227. [2020-10-23 20:09:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-23 20:09:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 242 transitions. [2020-10-23 20:09:09,972 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 242 transitions. Word has length 149 [2020-10-23 20:09:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:09,975 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 242 transitions. [2020-10-23 20:09:09,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:09:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 242 transitions. [2020-10-23 20:09:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:09:09,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:09,986 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] [2020-10-23 20:09:09,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:09:09,986 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:09,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1003405313, now seen corresponding path program 1 times [2020-10-23 20:09:09,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:09,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939438080] [2020-10-23 20:09:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:09,993 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,611 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:09:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:09:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:09:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:10,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939438080] [2020-10-23 20:09:10,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:10,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:09:10,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308003756] [2020-10-23 20:09:10,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:09:10,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:10,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:09:10,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:09:10,870 INFO L87 Difference]: Start difference. First operand 227 states and 242 transitions. Second operand 10 states. [2020-10-23 20:09:11,685 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:09:12,155 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:12,606 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:09:13,020 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:13,450 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:13,858 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:15,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:15,705 INFO L93 Difference]: Finished difference Result 394 states and 451 transitions. [2020-10-23 20:09:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:09:15,706 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:09:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:15,714 INFO L225 Difference]: With dead ends: 394 [2020-10-23 20:09:15,715 INFO L226 Difference]: Without dead ends: 282 [2020-10-23 20:09:15,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:09:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-23 20:09:15,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 227. [2020-10-23 20:09:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-23 20:09:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 241 transitions. [2020-10-23 20:09:15,826 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 241 transitions. Word has length 162 [2020-10-23 20:09:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:15,827 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 241 transitions. [2020-10-23 20:09:15,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:09:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 241 transitions. [2020-10-23 20:09:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-23 20:09:15,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:15,830 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] [2020-10-23 20:09:15,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:09:15,831 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:15,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:15,832 INFO L82 PathProgramCache]: Analyzing trace with hash -274672684, now seen corresponding path program 1 times [2020-10-23 20:09:15,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:15,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786632195] [2020-10-23 20:09:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:15,837 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,386 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:09:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:09:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 20:09:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-23 20:09:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:16,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786632195] [2020-10-23 20:09:16,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:16,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:09:16,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740983595] [2020-10-23 20:09:16,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:09:16,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:16,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:09:16,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:09:16,597 INFO L87 Difference]: Start difference. First operand 227 states and 241 transitions. Second operand 7 states. [2020-10-23 20:09:17,333 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:09:19,479 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:20,433 INFO L93 Difference]: Finished difference Result 567 states and 670 transitions. [2020-10-23 20:09:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:09:20,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-23 20:09:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:20,441 INFO L225 Difference]: With dead ends: 567 [2020-10-23 20:09:20,442 INFO L226 Difference]: Without dead ends: 455 [2020-10-23 20:09:20,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:09:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-23 20:09:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 326. [2020-10-23 20:09:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-23 20:09:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 350 transitions. [2020-10-23 20:09:20,649 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 350 transitions. Word has length 170 [2020-10-23 20:09:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:20,649 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 350 transitions. [2020-10-23 20:09:20,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:09:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 350 transitions. [2020-10-23 20:09:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-23 20:09:20,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:20,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:09:20,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:09:20,655 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:20,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:20,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1277684991, now seen corresponding path program 1 times [2020-10-23 20:09:20,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:20,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323500375] [2020-10-23 20:09:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:20,660 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,151 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:09:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:09:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:09:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:09:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:09:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 20:09:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:21,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323500375] [2020-10-23 20:09:21,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:21,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:09:21,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330276078] [2020-10-23 20:09:21,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:09:21,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:21,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:09:21,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:09:21,447 INFO L87 Difference]: Start difference. First operand 326 states and 350 transitions. Second operand 15 states. [2020-10-23 20:09:22,244 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:09:22,808 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:23,261 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:09:23,699 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:24,120 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:24,524 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:25,626 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:27,260 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:27,700 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:28,143 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:28,566 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:09:28,970 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:29,375 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:29,795 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:09:30,260 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:30,737 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:09:31,191 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:33,105 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:09:33,497 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:33,989 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:35,616 INFO L93 Difference]: Finished difference Result 1157 states and 1464 transitions. [2020-10-23 20:09:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 20:09:35,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 194 [2020-10-23 20:09:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:35,627 INFO L225 Difference]: With dead ends: 1157 [2020-10-23 20:09:35,628 INFO L226 Difference]: Without dead ends: 946 [2020-10-23 20:09:35,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 20:09:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-10-23 20:09:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 647. [2020-10-23 20:09:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-10-23 20:09:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 717 transitions. [2020-10-23 20:09:36,021 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 717 transitions. Word has length 194 [2020-10-23 20:09:36,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:36,022 INFO L481 AbstractCegarLoop]: Abstraction has 647 states and 717 transitions. [2020-10-23 20:09:36,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:09:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 717 transitions. [2020-10-23 20:09:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-23 20:09:36,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:36,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:09:36,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:09:36,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:36,031 INFO L82 PathProgramCache]: Analyzing trace with hash -651953840, now seen corresponding path program 1 times [2020-10-23 20:09:36,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:36,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556857643] [2020-10-23 20:09:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:36,210 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:09:36,212 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,615 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:09:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:09:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:09:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:09:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 20:09:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 20:09:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 20:09:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-23 20:09:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:09:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-23 20:09:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-23 20:09:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:37,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556857643] [2020-10-23 20:09:37,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:37,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:09:37,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794892292] [2020-10-23 20:09:37,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:09:37,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:37,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:09:37,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:09:37,041 INFO L87 Difference]: Start difference. First operand 647 states and 717 transitions. Second operand 12 states. [2020-10-23 20:09:38,790 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:39,215 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:09:39,668 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:09:40,097 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:40,535 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:40,924 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:42,781 INFO L93 Difference]: Finished difference Result 1485 states and 1788 transitions. [2020-10-23 20:09:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:09:42,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 251 [2020-10-23 20:09:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:42,801 INFO L225 Difference]: With dead ends: 1485 [2020-10-23 20:09:42,802 INFO L226 Difference]: Without dead ends: 953 [2020-10-23 20:09:42,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:09:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-10-23 20:09:43,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 671. [2020-10-23 20:09:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-23 20:09:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 742 transitions. [2020-10-23 20:09:43,124 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 742 transitions. Word has length 251 [2020-10-23 20:09:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:43,125 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 742 transitions. [2020-10-23 20:09:43,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:09:43,125 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 742 transitions. [2020-10-23 20:09:43,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-23 20:09:43,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:43,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:09:43,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:09:43,132 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash -181328844, now seen corresponding path program 1 times [2020-10-23 20:09:43,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:43,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407208181] [2020-10-23 20:09:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:43,300 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:09:43,303 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,752 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:09:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:09:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:09:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:09:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 20:09:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:09:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-23 20:09:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 20:09:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-23 20:09:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 20:09:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:44,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407208181] [2020-10-23 20:09:44,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:44,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:09:44,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52641449] [2020-10-23 20:09:44,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:09:44,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:44,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:09:44,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:09:44,155 INFO L87 Difference]: Start difference. First operand 671 states and 742 transitions. Second operand 15 states. [2020-10-23 20:09:45,064 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:45,484 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:09:45,892 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:46,288 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:46,670 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:47,833 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:48,237 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:48,659 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:49,058 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:49,462 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:51,207 INFO L93 Difference]: Finished difference Result 1343 states and 1606 transitions. [2020-10-23 20:09:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:09:51,207 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 246 [2020-10-23 20:09:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:51,215 INFO L225 Difference]: With dead ends: 1343 [2020-10-23 20:09:51,215 INFO L226 Difference]: Without dead ends: 787 [2020-10-23 20:09:51,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:09:51,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-23 20:09:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 571. [2020-10-23 20:09:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-23 20:09:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 625 transitions. [2020-10-23 20:09:51,503 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 625 transitions. Word has length 246 [2020-10-23 20:09:51,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:51,504 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 625 transitions. [2020-10-23 20:09:51,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:09:51,505 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 625 transitions. [2020-10-23 20:09:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-23 20:09:51,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:51,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:09:51,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:09:51,512 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:09:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:51,513 INFO L82 PathProgramCache]: Analyzing trace with hash 467668641, now seen corresponding path program 1 times [2020-10-23 20:09:51,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:51,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554364831] [2020-10-23 20:09:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:51,864 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-23 20:09:52,309 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-23 20:09:52,697 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-23 20:09:53,069 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-23 20:09:53,449 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-23 20:09:53,840 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-23 20:09:54,491 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2020-10-23 20:09:55,013 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2020-10-23 20:09:55,566 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2020-10-23 20:09:56,067 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2020-10-23 20:09:56,071 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:56,071 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:09:56,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:09:56,076 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:328) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:09:56,083 INFO L168 Benchmark]: Toolchain (without parser) took 55045.09 ms. Allocated memory was 158.3 MB in the beginning and 629.1 MB in the end (delta: 470.8 MB). Free memory was 134.1 MB in the beginning and 248.5 MB in the end (delta: -114.4 MB). Peak memory consumption was 357.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:09:56,083 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 158.3 MB. Free memory was 132.1 MB in the beginning and 132.0 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:09:56,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.42 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 113.2 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:09:56,085 INFO L168 Benchmark]: Boogie Preprocessor took 207.17 ms. Allocated memory is still 158.3 MB. Free memory was 113.0 MB in the beginning and 140.9 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:09:56,085 INFO L168 Benchmark]: RCFGBuilder took 1760.26 ms. Allocated memory is still 158.3 MB. Free memory was 140.9 MB in the beginning and 124.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:09:56,086 INFO L168 Benchmark]: TraceAbstraction took 52404.72 ms. Allocated memory was 158.3 MB in the beginning and 629.1 MB in the end (delta: 470.8 MB). Free memory was 123.4 MB in the beginning and 248.5 MB in the end (delta: -125.1 MB). Peak memory consumption was 345.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:09:56,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 158.3 MB. Free memory was 132.1 MB in the beginning and 132.0 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 652.42 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 113.2 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 207.17 ms. Allocated memory is still 158.3 MB. Free memory was 113.0 MB in the beginning and 140.9 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1760.26 ms. Allocated memory is still 158.3 MB. Free memory was 140.9 MB in the beginning and 124.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 52404.72 ms. Allocated memory was 158.3 MB in the beginning and 629.1 MB in the end (delta: 470.8 MB). Free memory was 123.4 MB in the beginning and 248.5 MB in the end (delta: -125.1 MB). Peak memory consumption was 345.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...