/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:08:27,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:08:27,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:08:28,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:08:28,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:08:28,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:08:28,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:08:28,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:08:28,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:08:28,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:08:28,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:08:28,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:08:28,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:08:28,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:08:28,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:08:28,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:08:28,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:08:28,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:08:28,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:08:28,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:08:28,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:08:28,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:08:28,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:08:28,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:08:28,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 06:08:28,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 06:08:28,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 06:08:28,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 06:08:28,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 06:08:28,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 06:08:28,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 06:08:28,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 06:08:28,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 06:08:28,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 06:08:28,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 06:08:28,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 06:08:28,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 06:08:28,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 06:08:28,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:08:28,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:08:28,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:08:28,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:08:28,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:08:28,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:08:28,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:08:28,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:08:28,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:08:28,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:08:28,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:08:28,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:08:28,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:08:28,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:08:28,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:08:28,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:08:28,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:08:28,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:08:28,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:08:28,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:08:28,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:08:28,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:08:28,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:08:28,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:08:28,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:08:28,081 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:08:28,082 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:08:28,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:08:28,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:08:28,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:08:28,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:08:28,458 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:08:28,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2021-05-06 06:08:28,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50c373a56/dfd1c4412b514cec9ba35bb607799db7/FLAG5ea8999ed [2021-05-06 06:08:28,952 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:08:28,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2021-05-06 06:08:28,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50c373a56/dfd1c4412b514cec9ba35bb607799db7/FLAG5ea8999ed [2021-05-06 06:08:29,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50c373a56/dfd1c4412b514cec9ba35bb607799db7 [2021-05-06 06:08:29,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:08:29,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:08:29,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:08:29,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:08:29,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:08:29,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f52f687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29, skipping insertion in model container [2021-05-06 06:08:29,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:08:29,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:08:29,657 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c[11342,11355] [2021-05-06 06:08:29,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:08:29,664 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:08:29,731 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c[11342,11355] [2021-05-06 06:08:29,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:08:29,753 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:08:29,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29 WrapperNode [2021-05-06 06:08:29,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:08:29,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:08:29,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:08:29,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:08:29,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... [2021-05-06 06:08:29,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:08:29,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:08:29,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:08:29,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:08:29,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:08:29,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:08:29,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:08:29,936 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:08:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:08:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-05-06 06:08:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2021-05-06 06:08:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2021-05-06 06:08:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2021-05-06 06:08:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2021-05-06 06:08:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2021-05-06 06:08:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2021-05-06 06:08:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2021-05-06 06:08:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:08:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:08:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:08:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:08:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:08:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:08:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:08:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-05-06 06:08:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-06 06:08:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:08:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:08:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-06 06:08:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 06:08:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:08:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-06 06:08:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:08:30,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:08:30,624 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-05-06 06:08:30,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:30 BoogieIcfgContainer [2021-05-06 06:08:30,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:08:30,626 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:08:30,626 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:08:30,626 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:08:30,629 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:30" (1/1) ... [2021-05-06 06:08:30,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:08:30 BasicIcfg [2021-05-06 06:08:30,649 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:08:30,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:08:30,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:08:30,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:08:30,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:08:29" (1/4) ... [2021-05-06 06:08:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4705a69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:08:30, skipping insertion in model container [2021-05-06 06:08:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:08:29" (2/4) ... [2021-05-06 06:08:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4705a69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:08:30, skipping insertion in model container [2021-05-06 06:08:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:08:30" (3/4) ... [2021-05-06 06:08:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4705a69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:08:30, skipping insertion in model container [2021-05-06 06:08:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:08:30" (4/4) ... [2021-05-06 06:08:30,654 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_2.cJordan [2021-05-06 06:08:30,658 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:08:30,661 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:08:30,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:08:30,687 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:08:30,687 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:08:30,687 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:08:30,687 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:08:30,687 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:08:30,687 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:08:30,687 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:08:30,687 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:08:30,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 06:08:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:08:30,707 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:08:30,707 INFO L523 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] [2021-05-06 06:08:30,708 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:08:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:08:30,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1557733986, now seen corresponding path program 1 times [2021-05-06 06:08:30,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:08:30,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990112679] [2021-05-06 06:08:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:08:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,019 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-06 06:08:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:08:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 06:08:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-06 06:08:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:08:31,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:08:31,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990112679] [2021-05-06 06:08:31,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990112679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:08:31,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:08:31,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:08:31,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673903130] [2021-05-06 06:08:31,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:08:31,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:08:31,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:08:31,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:08:31,074 INFO L87 Difference]: Start difference. First operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 06:08:31,207 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-06 06:08:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:31,580 INFO L93 Difference]: Finished difference Result 130 states and 177 transitions. [2021-05-06 06:08:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:08:31,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-05-06 06:08:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:31,587 INFO L225 Difference]: With dead ends: 130 [2021-05-06 06:08:31,587 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 06:08:31,588 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 254.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:08:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 06:08:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-06 06:08:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 95 states have internal predecessors, (137), 16 states have call successors, (16), 11 states have call predecessors, (16), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 06:08:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2021-05-06 06:08:31,616 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2021-05-06 06:08:31,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:31,616 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2021-05-06 06:08:31,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 06:08:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2021-05-06 06:08:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 06:08:31,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:08:31,619 INFO L523 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] [2021-05-06 06:08:31,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:08:31,619 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:08:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:08:31,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1372227393, now seen corresponding path program 1 times [2021-05-06 06:08:31,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:08:31,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466124431] [2021-05-06 06:08:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:08:31,645 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:08:31,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553172185] [2021-05-06 06:08:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:08:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:31,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 06:08:31,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:08:31,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:08:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:08:31,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:08:31,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466124431] [2021-05-06 06:08:31,928 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:08:31,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553172185] [2021-05-06 06:08:31,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553172185] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:08:31,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:08:31,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:08:31,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934522944] [2021-05-06 06:08:31,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:08:31,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:08:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:08:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:08:31,931 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 06:08:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:31,945 INFO L93 Difference]: Finished difference Result 117 states and 163 transitions. [2021-05-06 06:08:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:08:31,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-05-06 06:08:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:31,946 INFO L225 Difference]: With dead ends: 117 [2021-05-06 06:08:31,946 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:08:31,947 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:08:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:08:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:08:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:08:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:08:31,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-06 06:08:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:31,948 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:08:31,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 06:08:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:08:31,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:08:32,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 06:08:32,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:08:32 BasicIcfg [2021-05-06 06:08:32,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:08:32,170 INFO L168 Benchmark]: Toolchain (without parser) took 2813.23 ms. Allocated memory was 164.6 MB in the beginning and 219.2 MB in the end (delta: 54.5 MB). Free memory was 128.1 MB in the beginning and 168.3 MB in the end (delta: -40.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,170 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 164.6 MB. Free memory is still 145.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:08:32,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.29 ms. Allocated memory is still 164.6 MB. Free memory was 127.9 MB in the beginning and 139.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,171 INFO L168 Benchmark]: Boogie Preprocessor took 76.66 ms. Allocated memory is still 164.6 MB. Free memory was 139.4 MB in the beginning and 135.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,171 INFO L168 Benchmark]: RCFGBuilder took 793.51 ms. Allocated memory is still 164.6 MB. Free memory was 135.2 MB in the beginning and 73.9 MB in the end (delta: 61.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,171 INFO L168 Benchmark]: IcfgTransformer took 23.14 ms. Allocated memory is still 164.6 MB. Free memory was 73.4 MB in the beginning and 70.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:32,171 INFO L168 Benchmark]: TraceAbstraction took 1519.75 ms. Allocated memory was 164.6 MB in the beginning and 219.2 MB in the end (delta: 54.5 MB). Free memory was 70.2 MB in the beginning and 168.3 MB in the end (delta: -98.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:08:32,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 164.6 MB. Free memory is still 145.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 395.29 ms. Allocated memory is still 164.6 MB. Free memory was 127.9 MB in the beginning and 139.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 76.66 ms. Allocated memory is still 164.6 MB. Free memory was 139.4 MB in the beginning and 135.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 793.51 ms. Allocated memory is still 164.6 MB. Free memory was 135.2 MB in the beginning and 73.9 MB in the end (delta: 61.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 23.14 ms. Allocated memory is still 164.6 MB. Free memory was 73.4 MB in the beginning and 70.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1519.75 ms. Allocated memory was 164.6 MB in the beginning and 219.2 MB in the end (delta: 54.5 MB). Free memory was 70.2 MB in the beginning and 168.3 MB in the end (delta: -98.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 463]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1481.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 13.2ms, AutomataDifference: 540.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 305 SDtfs, 209 SDslu, 346 SDs, 0 SdLazy, 112 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 310.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 264.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.4ms SsaConstructionTime, 134.3ms SatisfiabilityAnalysisTime, 343.6ms InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 221 SizeOfPredicates, 1 NumberOfNonLiveVariables, 579 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...