./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4ee0473dc6d7092e83742edafdde9370f3b93e25 ........................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:17,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:17,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:17,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:17,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:17,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:17,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:17,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:17,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:17,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:17,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:17,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:17,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:17,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:17,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:17,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:17,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:17,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:17,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:18,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:18,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:18,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:18,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:18,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:18,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:18,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:18,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:18,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:18,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:18,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:18,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:18,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:18,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:18,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:18,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:18,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:18,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:18,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:18,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:18,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:18,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:18,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 02:58:18,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:18,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:18,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:18,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:18,079 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:18,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:18,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:18,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:18,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:18,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:18,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:18,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:18,082 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 02:58:18,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:18,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:18,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:18,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:18,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:18,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:18,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:18,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:18,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:18,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:18,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:18,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:18,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:18,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:18,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:18,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee0473dc6d7092e83742edafdde9370f3b93e25 [2020-11-28 02:58:18,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:18,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:18,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:18,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:18,401 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:18,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Cairo.c [2020-11-28 02:58:18,479 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/data/864edb7df/194e88f70a3640c5ae9a8ab0be15bffc/FLAGc00d0844f [2020-11-28 02:58:18,958 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:18,959 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/sv-benchmarks/c/termination-crafted/Cairo.c [2020-11-28 02:58:18,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/data/864edb7df/194e88f70a3640c5ae9a8ab0be15bffc/FLAGc00d0844f [2020-11-28 02:58:19,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/data/864edb7df/194e88f70a3640c5ae9a8ab0be15bffc [2020-11-28 02:58:19,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:19,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:19,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:19,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:19,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:19,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608f0a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19, skipping insertion in model container [2020-11-28 02:58:19,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:19,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:19,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:19,509 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:19,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:19,547 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:19,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19 WrapperNode [2020-11-28 02:58:19,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:19,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:19,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:19,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:19,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:19,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:19,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:19,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:19,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2020-11-28 02:58:19,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:19,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:19,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:19,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:19,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/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 [2020-11-28 02:58:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:19,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:19,866 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:58:19,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:19 BoogieIcfgContainer [2020-11-28 02:58:19,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:19,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:19,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:19,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:19,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:19" (1/3) ... [2020-11-28 02:58:19,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec05c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:19, skipping insertion in model container [2020-11-28 02:58:19,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (2/3) ... [2020-11-28 02:58:19,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec05c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:19, skipping insertion in model container [2020-11-28 02:58:19,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:19" (3/3) ... [2020-11-28 02:58:19,878 INFO L111 eAbstractionObserver]: Analyzing ICFG Cairo.c [2020-11-28 02:58:19,889 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:19,893 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:58:19,906 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:58:19,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:19,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:19,932 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:19,932 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:19,932 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:19,932 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:19,933 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:19,933 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 02:58:19,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 02:58:19,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:19,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 02:58:19,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:58:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,959 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2020-11-28 02:58:19,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722332660] [2020-11-28 02:58:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:20,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722332660] [2020-11-28 02:58:20,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:20,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:58:20,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476299449] [2020-11-28 02:58:20,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:20,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:20,139 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-11-28 02:58:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,238 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 02:58:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:20,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 02:58:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,249 INFO L225 Difference]: With dead ends: 15 [2020-11-28 02:58:20,249 INFO L226 Difference]: Without dead ends: 6 [2020-11-28 02:58:20,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-28 02:58:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-28 02:58:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 02:58:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-28 02:58:20,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-28 02:58:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,288 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-28 02:58:20,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-28 02:58:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:58:20,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:58:20,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:20,289 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:58:20,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,290 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2020-11-28 02:58:20,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:20,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259510957] [2020-11-28 02:58:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:20,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259510957] [2020-11-28 02:58:20,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:20,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:20,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855515239] [2020-11-28 02:58:20,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:20,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:20,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:20,325 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2020-11-28 02:58:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,393 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 02:58:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:20,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 02:58:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,395 INFO L225 Difference]: With dead ends: 10 [2020-11-28 02:58:20,395 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 02:58:20,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 02:58:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 02:58:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 02:58:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 02:58:20,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 02:58:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,400 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 02:58:20,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 02:58:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:58:20,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2020-11-28 02:58:20,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:20,401 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:58:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,402 INFO L82 PathProgramCache]: Analyzing trace with hash -423045501, now seen corresponding path program 1 times [2020-11-28 02:58:20,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:20,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160098090] [2020-11-28 02:58:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160098090] [2020-11-28 02:58:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913827975] [2020-11-28 02:58:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/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 [2020-11-28 02:58:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:58:20,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:20,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:20,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-28 02:58:20,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161317677] [2020-11-28 02:58:20,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:20,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:20,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:20,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:20,565 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 02:58:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,587 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 02:58:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:20,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 02:58:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,588 INFO L225 Difference]: With dead ends: 9 [2020-11-28 02:58:20,588 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:20,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:20,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:20,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-28 02:58:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,590 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:20,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:20,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:20,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 02:58:20,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:58:20,860 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 02:58:20,860 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:58:20,861 INFO L270 CegarLoopResult]: At program point L25(lines 16 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-28 02:58:20,861 INFO L270 CegarLoopResult]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2020-11-28 02:58:20,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 02:58:20,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:58:20,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:58:20,861 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 02:58:20,861 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-28 02:58:20,861 INFO L274 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-11-28 02:58:20,862 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 24) no Hoare annotation was computed. [2020-11-28 02:58:20,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:20 BoogieIcfgContainer [2020-11-28 02:58:20,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:20,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:20,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:20,879 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:20,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:19" (3/4) ... [2020-11-28 02:58:20,888 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:20,897 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 02:58:20,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 02:58:20,944 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3a6e4513-aee4-4200-8b56-f9568b8cf22c/bin/uautomizer/witness.graphml [2020-11-28 02:58:20,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:20,949 INFO L168 Benchmark]: Toolchain (without parser) took 1619.20 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 51.3 MB in the beginning and 68.5 MB in the end (delta: -17.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,950 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.58 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 51.1 MB in the beginning and 78.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.23 ms. Allocated memory is still 98.6 MB. Free memory was 78.0 MB in the beginning and 76.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,952 INFO L168 Benchmark]: Boogie Preprocessor took 21.22 ms. Allocated memory is still 98.6 MB. Free memory was 76.5 MB in the beginning and 75.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,953 INFO L168 Benchmark]: RCFGBuilder took 251.19 ms. Allocated memory is still 98.6 MB. Free memory was 75.5 MB in the beginning and 67.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,953 INFO L168 Benchmark]: TraceAbstraction took 1003.59 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 70.6 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,954 INFO L168 Benchmark]: Witness Printer took 66.72 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 68.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 220.58 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 51.1 MB in the beginning and 78.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.23 ms. Allocated memory is still 98.6 MB. Free memory was 78.0 MB in the beginning and 76.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.22 ms. Allocated memory is still 98.6 MB. Free memory was 76.5 MB in the beginning and 75.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 251.19 ms. Allocated memory is still 98.6 MB. Free memory was 75.5 MB in the beginning and 67.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1003.59 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 70.6 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 66.72 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 68.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: x <= 2147483647 && 0 <= x - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 7 SDslu, 0 SDs, 0 SdLazy, 21 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...