./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/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 282a32bc5fb3d70423f87a450340f7a26ab0f093 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:22,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:22,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:22,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:22,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:22,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:22,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:22,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:22,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:22,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:22,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:22,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:22,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:22,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:22,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:22,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:22,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:22,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:22,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:22,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:22,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:22,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:22,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:22,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:22,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:22,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:22,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:22,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:22,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:22,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:22,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:22,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:22,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:22,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:22,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:22,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:22,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:22,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:22,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:22,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:22,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:22,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:54:22,577 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:22,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:22,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:22,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:22,579 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:22,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:22,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:22,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:22,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:22,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:22,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:22,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:22,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:54:22,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:22,581 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:22,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:22,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:22,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:22,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:22,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:22,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:22,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:22,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:22,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:22,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:22,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:22,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:22,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/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 -> 282a32bc5fb3d70423f87a450340f7a26ab0f093 [2019-10-22 08:54:22,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:22,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:22,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:22,625 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:22,626 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:22,627 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-10-22 08:54:22,669 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/data/30621dce8/581be74527de4fa589971166e09db66e/FLAG00903af7a [2019-10-22 08:54:23,018 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:23,018 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-10-22 08:54:23,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/data/30621dce8/581be74527de4fa589971166e09db66e/FLAG00903af7a [2019-10-22 08:54:23,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/data/30621dce8/581be74527de4fa589971166e09db66e [2019-10-22 08:54:23,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:23,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:23,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:23,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:23,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:23,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c99c520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23, skipping insertion in model container [2019-10-22 08:54:23,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,053 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:23,066 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:23,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:23,262 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:23,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:23,291 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:23,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23 WrapperNode [2019-10-22 08:54:23,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:23,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:23,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:23,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:23,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:23,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:23,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:23,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:23,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... [2019-10-22 08:54:23,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:23,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:23,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:23,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:23,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/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 [2019-10-22 08:54:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:54:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:23,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:54:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:54:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:54:23,670 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:23,670 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:54:23,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:23 BoogieIcfgContainer [2019-10-22 08:54:23,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:23,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:23,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:23,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:23,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:23" (1/3) ... [2019-10-22 08:54:23,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498c2f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:23, skipping insertion in model container [2019-10-22 08:54:23,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:23" (2/3) ... [2019-10-22 08:54:23,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498c2f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:23, skipping insertion in model container [2019-10-22 08:54:23,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:23" (3/3) ... [2019-10-22 08:54:23,691 INFO L109 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2019-10-22 08:54:23,700 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:23,707 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 08:54:23,728 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 08:54:23,765 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:23,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:23,779 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:23,779 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:23,779 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:23,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:23,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:23,780 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-22 08:54:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 08:54:23,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:23,799 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 08:54:23,801 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:23,806 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2019-10-22 08:54:23,813 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:23,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805700986] [2019-10-22 08:54:23,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:23,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:23,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:23,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805700986] [2019-10-22 08:54:23,986 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:23,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:23,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886208686] [2019-10-22 08:54:23,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:23,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:23,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:23,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:24,001 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-10-22 08:54:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:24,064 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2019-10-22 08:54:24,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:24,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 08:54:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:24,077 INFO L225 Difference]: With dead ends: 38 [2019-10-22 08:54:24,077 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 08:54:24,081 INFO L600 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 [2019-10-22 08:54:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 08:54:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 08:54:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:54:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-22 08:54:24,120 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 5 [2019-10-22 08:54:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:24,120 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-22 08:54:24,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-22 08:54:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:54:24,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:24,121 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-10-22 08:54:24,121 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2019-10-22 08:54:24,122 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:24,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040070592] [2019-10-22 08:54:24,122 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:24,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040070592] [2019-10-22 08:54:24,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:24,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:24,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116344115] [2019-10-22 08:54:24,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:24,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:24,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:24,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:24,162 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2019-10-22 08:54:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:24,188 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-22 08:54:24,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:24,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 08:54:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:24,190 INFO L225 Difference]: With dead ends: 20 [2019-10-22 08:54:24,190 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 08:54:24,191 INFO L600 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 [2019-10-22 08:54:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 08:54:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-22 08:54:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:54:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-22 08:54:24,194 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2019-10-22 08:54:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:24,194 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-22 08:54:24,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-22 08:54:24,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:54:24,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:24,195 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-10-22 08:54:24,196 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:24,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2019-10-22 08:54:24,196 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:24,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689413679] [2019-10-22 08:54:24,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,197 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:24,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689413679] [2019-10-22 08:54:24,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357366731] [2019-10-22 08:54:24,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/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 [2019-10-22 08:54:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:24,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:54:24,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:24,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:54:24,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-10-22 08:54:24,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248791941] [2019-10-22 08:54:24,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:54:24,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:24,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:54:24,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:24,344 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2019-10-22 08:54:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:24,402 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-10-22 08:54:24,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:54:24,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 08:54:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:24,406 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:54:24,406 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 08:54:24,406 INFO L600 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 [2019-10-22 08:54:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 08:54:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-10-22 08:54:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 08:54:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-10-22 08:54:24,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-10-22 08:54:24,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:24,409 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-22 08:54:24,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:54:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-10-22 08:54:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:54:24,410 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:24,410 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:24,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:24,611 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:24,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1577266116, now seen corresponding path program 1 times [2019-10-22 08:54:24,611 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:24,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92157555] [2019-10-22 08:54:24,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:24,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92157555] [2019-10-22 08:54:24,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656037579] [2019-10-22 08:54:24,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/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 [2019-10-22 08:54:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:24,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:24,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:24,721 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:24,721 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-10-22 08:54:24,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734034712] [2019-10-22 08:54:24,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:54:24,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:24,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:54:24,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:54:24,722 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2019-10-22 08:54:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:24,770 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-10-22 08:54:24,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:24,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-22 08:54:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:24,772 INFO L225 Difference]: With dead ends: 30 [2019-10-22 08:54:24,772 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 08:54:24,772 INFO L600 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 [2019-10-22 08:54:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 08:54:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-10-22 08:54:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:54:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-22 08:54:24,778 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2019-10-22 08:54:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:24,778 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-22 08:54:24,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:54:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-22 08:54:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:54:24,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:24,779 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:24,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:24,980 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:24,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1222737984, now seen corresponding path program 2 times [2019-10-22 08:54:24,980 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:24,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967566476] [2019-10-22 08:54:24,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,981 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:24,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:25,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967566476] [2019-10-22 08:54:25,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068001140] [2019-10-22 08:54:25,063 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/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 [2019-10-22 08:54:25,091 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 08:54:25,092 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:54:25,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:25,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 08:54:25,118 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:54:25,118 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2019-10-22 08:54:25,118 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626679385] [2019-10-22 08:54:25,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:25,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:25,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:25,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:54:25,120 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2019-10-22 08:54:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:25,138 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-10-22 08:54:25,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:25,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-22 08:54:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:25,139 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:54:25,139 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 08:54:25,140 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:54:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 08:54:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-22 08:54:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:54:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-22 08:54:25,142 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 16 [2019-10-22 08:54:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:25,143 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-22 08:54:25,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-22 08:54:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:54:25,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:25,146 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:25,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:25,348 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:25,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:25,348 INFO L82 PathProgramCache]: Analyzing trace with hash -749828086, now seen corresponding path program 1 times [2019-10-22 08:54:25,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:25,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562736929] [2019-10-22 08:54:25,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:25,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:25,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 08:54:25,400 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562736929] [2019-10-22 08:54:25,400 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:25,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:25,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261217529] [2019-10-22 08:54:25,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:25,401 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:25,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:25,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:25,401 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-10-22 08:54:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:25,418 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-10-22 08:54:25,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:25,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 08:54:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:25,419 INFO L225 Difference]: With dead ends: 18 [2019-10-22 08:54:25,419 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:54:25,420 INFO L600 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 [2019-10-22 08:54:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:54:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:54:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:54:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:54:25,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-22 08:54:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:25,420 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:25,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:54:25,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:54:25,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:54:25,450 INFO L446 ceAbstractionStarter]: At program point L27(lines 11 28) the Hoare annotation is: true [2019-10-22 08:54:25,450 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-10-22 08:54:25,450 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-10-22 08:54:25,450 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-10-22 08:54:25,450 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 26) no Hoare annotation was computed. [2019-10-22 08:54:25,450 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2019-10-22 08:54:25,450 INFO L443 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2019-10-22 08:54:25,450 INFO L443 ceAbstractionStarter]: For program point L15-4(line 15) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L439 ceAbstractionStarter]: At program point L15-5(lines 15 17) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~i~0) [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point L15-6(lines 11 28) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2019-10-22 08:54:25,451 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:54:25,452 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-10-22 08:54:25,452 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-10-22 08:54:25,452 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 24) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~i~0) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~k~0 1047)) [2019-10-22 08:54:25,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:25 BoogieIcfgContainer [2019-10-22 08:54:25,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:25,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:25,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:25,465 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:25,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:23" (3/4) ... [2019-10-22 08:54:25,469 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:54:25,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 08:54:25,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:54:25,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:54:25,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a2526c8b-8326-4895-8eb9-e86abf761891/bin/uautomizer/witness.graphml [2019-10-22 08:54:25,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:25,524 INFO L168 Benchmark]: Toolchain (without parser) took 2484.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -72.1 MB). Peak memory consumption was 97.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:25,524 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:25,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -216.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:25,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:25,531 INFO L168 Benchmark]: Boogie Preprocessor took 22.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:25,532 INFO L168 Benchmark]: RCFGBuilder took 324.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:25,532 INFO L168 Benchmark]: TraceAbstraction took 1792.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:25,532 INFO L168 Benchmark]: Witness Printer took 57.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:25,534 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -216.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 324.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1792.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 11.5 GB. * Witness Printer took 57.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 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: 0 <= i - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((1 <= i && 0 <= k) && x <= 2147483647) && k <= 1047 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s 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, 17 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 2668 SizeOfPredicates, 4 NumberOfNonLiveVariables, 125 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...