./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 282a32bc5fb3d70423f87a450340f7a26ab0f093 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:02:08,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:02:08,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:02:08,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:02:08,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:02:08,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:02:08,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:02:08,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:02:08,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:02:08,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:02:08,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:02:08,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:02:08,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:02:08,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:02:08,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:02:08,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:02:08,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:02:08,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:02:08,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:02:08,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:02:08,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:02:08,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:02:08,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:02:08,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:02:09,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:02:09,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:02:09,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:02:09,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:02:09,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:02:09,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:02:09,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:02:09,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:02:09,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:02:09,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:02:09,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:02:09,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:02:09,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:02:09,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:02:09,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:02:09,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:02:09,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:02:09,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:02:09,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:02:09,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:02:09,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:02:09,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:02:09,101 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:02:09,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:02:09,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:02:09,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:02:09,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:02:09,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:02:09,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:02:09,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:02:09,105 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:02:09,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:02:09,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:02:09,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:02:09,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:02:09,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:02:09,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:02:09,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:02:09,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:02:09,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:02:09,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:02:09,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:02:09,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:02:09,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:02:09,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:02:09,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:02:09,109 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:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 282a32bc5fb3d70423f87a450340f7a26ab0f093 [2020-10-26 04:02:09,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:02:09,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:02:09,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:02:09,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:02:09,634 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:02:09,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2020-10-26 04:02:09,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c50a8d2/cead5a68a6064c1f802074a2c56ddfd7/FLAG9cb2be88a [2020-10-26 04:02:10,372 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:02:10,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2020-10-26 04:02:10,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c50a8d2/cead5a68a6064c1f802074a2c56ddfd7/FLAG9cb2be88a [2020-10-26 04:02:10,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c50a8d2/cead5a68a6064c1f802074a2c56ddfd7 [2020-10-26 04:02:10,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:02:10,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:02:10,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:10,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:02:10,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:02:10,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8abe10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10, skipping insertion in model container [2020-10-26 04:02:10,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:02:10,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:02:10,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:10,991 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:02:11,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:11,032 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:02:11,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11 WrapperNode [2020-10-26 04:02:11,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:11,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:11,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:02:11,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:02:11,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:11,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:02:11,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:02:11,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:02:11,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... [2020-10-26 04:02:11,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:02:11,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:02:11,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:02:11,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:02:11,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:02:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 04:02:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:02:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:02:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 04:02:11,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:02:11,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 04:02:11,468 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:02:11,469 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 04:02:11,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:11 BoogieIcfgContainer [2020-10-26 04:02:11,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:02:11,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:02:11,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:02:11,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:02:11,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:02:10" (1/3) ... [2020-10-26 04:02:11,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10951962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:11, skipping insertion in model container [2020-10-26 04:02:11,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:11" (2/3) ... [2020-10-26 04:02:11,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10951962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:11, skipping insertion in model container [2020-10-26 04:02:11,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:11" (3/3) ... [2020-10-26 04:02:11,484 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2020-10-26 04:02:11,500 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:02:11,505 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:02:11,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:02:11,583 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:02:11,583 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:02:11,585 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:02:11,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:02:11,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:02:11,585 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:02:11,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:02:11,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:02:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-26 04:02:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-26 04:02:11,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:11,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-26 04:02:11,618 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:11,629 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2020-10-26 04:02:11,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:11,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7327148] [2020-10-26 04:02:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:11,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7327148] [2020-10-26 04:02:11,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:11,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:02:11,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740910780] [2020-10-26 04:02:11,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:02:11,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:11,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:02:11,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:02:11,995 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-10-26 04:02:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:12,068 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-10-26 04:02:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:02:12,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-26 04:02:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:12,082 INFO L225 Difference]: With dead ends: 38 [2020-10-26 04:02:12,082 INFO L226 Difference]: Without dead ends: 20 [2020-10-26 04:02:12,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:02:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-26 04:02:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-26 04:02:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-26 04:02:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-26 04:02:12,124 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 5 [2020-10-26 04:02:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:12,125 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-26 04:02:12,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:02:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-26 04:02:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 04:02:12,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:12,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-26 04:02:12,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:02:12,127 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:12,129 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2020-10-26 04:02:12,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:12,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911177348] [2020-10-26 04:02:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:02:12,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911177348] [2020-10-26 04:02:12,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:12,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:02:12,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996434841] [2020-10-26 04:02:12,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:02:12,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:12,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:02:12,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:02:12,189 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2020-10-26 04:02:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:12,233 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-10-26 04:02:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:02:12,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 04:02:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:12,235 INFO L225 Difference]: With dead ends: 20 [2020-10-26 04:02:12,236 INFO L226 Difference]: Without dead ends: 19 [2020-10-26 04:02:12,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:02:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-26 04:02:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-26 04:02:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-26 04:02:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-26 04:02:12,243 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2020-10-26 04:02:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:12,244 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-26 04:02:12,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:02:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-26 04:02:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 04:02:12,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:12,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-26 04:02:12,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:02:12,246 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2020-10-26 04:02:12,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:12,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626504012] [2020-10-26 04:02:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:12,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626504012] [2020-10-26 04:02:12,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29676699] [2020-10-26 04:02:12,335 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 [2020-10-26 04:02:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:12,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:02:12,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:02:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:12,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 04:02:12,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-10-26 04:02:12,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359960223] [2020-10-26 04:02:12,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 04:02:12,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:12,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:02:12,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:02:12,463 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-10-26 04:02:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:12,533 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-10-26 04:02:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:02:12,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 04:02:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:12,535 INFO L225 Difference]: With dead ends: 19 [2020-10-26 04:02:12,535 INFO L226 Difference]: Without dead ends: 18 [2020-10-26 04:02:12,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-26 04:02:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-26 04:02:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-10-26 04:02:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-26 04:02:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-26 04:02:12,541 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2020-10-26 04:02:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:12,542 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-26 04:02:12,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 04:02:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-26 04:02:12,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 04:02:12,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:12,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:12,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-26 04:02:12,745 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1577266116, now seen corresponding path program 1 times [2020-10-26 04:02:12,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:12,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384733802] [2020-10-26 04:02:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:12,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384733802] [2020-10-26 04:02:12,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924395280] [2020-10-26 04:02:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:02:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:12,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:02:12,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:02:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:12,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:02:12,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-26 04:02:12,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472253132] [2020-10-26 04:02:12,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 04:02:12,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:12,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 04:02:12,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:02:12,883 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2020-10-26 04:02:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:12,927 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-26 04:02:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:02:12,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-26 04:02:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:12,939 INFO L225 Difference]: With dead ends: 30 [2020-10-26 04:02:12,939 INFO L226 Difference]: Without dead ends: 22 [2020-10-26 04:02:12,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:02:12,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-26 04:02:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-10-26 04:02:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-26 04:02:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-26 04:02:12,948 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2020-10-26 04:02:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:12,948 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-26 04:02:12,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 04:02:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-26 04:02:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 04:02:12,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:12,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:13,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:02:13,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:13,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:13,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1222737984, now seen corresponding path program 2 times [2020-10-26 04:02:13,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:13,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190903419] [2020-10-26 04:02:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:13,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190903419] [2020-10-26 04:02:13,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896864638] [2020-10-26 04:02:13,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:02:13,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 04:02:13,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:02:13,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:02:13,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:02:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 04:02:13,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 04:02:13,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2020-10-26 04:02:13,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840144853] [2020-10-26 04:02:13,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:02:13,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:13,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:02:13,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 04:02:13,498 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2020-10-26 04:02:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:13,538 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-10-26 04:02:13,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:02:13,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-26 04:02:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:13,540 INFO L225 Difference]: With dead ends: 19 [2020-10-26 04:02:13,540 INFO L226 Difference]: Without dead ends: 18 [2020-10-26 04:02:13,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 04:02:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-26 04:02:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-26 04:02:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-26 04:02:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-26 04:02:13,551 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 16 [2020-10-26 04:02:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:13,553 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-26 04:02:13,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:02:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-26 04:02:13,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 04:02:13,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:13,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:13,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:02:13,766 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash -749828086, now seen corresponding path program 1 times [2020-10-26 04:02:13,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:13,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322646998] [2020-10-26 04:02:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 04:02:13,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322646998] [2020-10-26 04:02:13,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:13,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:02:13,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327340776] [2020-10-26 04:02:13,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:02:13,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:13,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:02:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:02:13,815 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-10-26 04:02:13,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:13,890 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-10-26 04:02:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:02:13,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 04:02:13,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:13,895 INFO L225 Difference]: With dead ends: 18 [2020-10-26 04:02:13,895 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 04:02:13,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:02:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 04:02:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 04:02:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 04:02:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:02:13,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 04:02:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:13,902 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:02:13,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:02:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:02:13,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 04:02:13,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 04:02:13,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 04:02:13,995 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-10-26 04:02:13,996 INFO L277 CegarLoopResult]: At program point L27(lines 11 28) the Hoare annotation is: true [2020-10-26 04:02:13,996 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-26 04:02:13,996 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-26 04:02:13,996 INFO L274 CegarLoopResult]: For program point L19(lines 19 26) no Hoare annotation was computed. [2020-10-26 04:02:13,996 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2020-10-26 04:02:13,997 INFO L274 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-10-26 04:02:13,997 INFO L274 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-10-26 04:02:13,997 INFO L270 CegarLoopResult]: At program point L15-5(lines 15 17) the Hoare annotation is: (or (= ULTIMATE.start_main_~i~0 0) (<= 1 ULTIMATE.start_main_~i~0)) [2020-10-26 04:02:13,997 INFO L274 CegarLoopResult]: For program point L15-6(lines 11 28) no Hoare annotation was computed. [2020-10-26 04:02:13,997 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-26 04:02:13,997 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-10-26 04:02:13,998 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-26 04:02:13,998 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 04:02:13,998 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-26 04:02:13,998 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2020-10-26 04:02:13,998 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-10-26 04:02:13,998 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 04:02:13,998 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-10-26 04:02:13,999 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 1 ULTIMATE.start_main_~i~0) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 1047)) [2020-10-26 04:02:14,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:02:14 BoogieIcfgContainer [2020-10-26 04:02:14,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:02:14,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:02:14,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:02:14,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:02:14,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:11" (3/4) ... [2020-10-26 04:02:14,024 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 04:02:14,037 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-26 04:02:14,037 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-26 04:02:14,037 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 04:02:14,089 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:02:14,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:02:14,092 INFO L168 Benchmark]: Toolchain (without parser) took 3329.54 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 22.0 MB in the beginning and 42.4 MB in the end (delta: -20.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:14,092 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 44.0 MB. Free memory is still 24.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:14,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.68 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 21.7 MB in the end (delta: -336.4 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:14,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 20.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:14,094 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 ms. Allocated memory is still 44.0 MB. Free memory was 20.2 MB in the beginning and 19.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:14,095 INFO L168 Benchmark]: RCFGBuilder took 372.02 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.0 MB in the beginning and 29.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:14,096 INFO L168 Benchmark]: TraceAbstraction took 2544.23 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 45.0 MB in the end (delta: -16.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:14,097 INFO L168 Benchmark]: Witness Printer took 70.05 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 42.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:14,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 44.0 MB. Free memory is still 24.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.68 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 21.7 MB in the end (delta: -336.4 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 20.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.77 ms. Allocated memory is still 44.0 MB. Free memory was 20.2 MB in the beginning and 19.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 372.02 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.0 MB in the beginning and 29.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2544.23 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 45.0 MB in the end (delta: -16.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.05 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 42.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: i == 0 || 1 <= i - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 1 <= i) && 0 <= k) && k <= 1047 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 48 SDslu, 122 SDs, 0 SdLazy, 83 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 21 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 107 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 2488 SizeOfPredicates, 4 NumberOfNonLiveVariables, 128 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 19/31 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...