./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 256a9ac0f321f0d2863fb720d2ae6cb61570c373 ............................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:48:24,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:48:24,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:48:24,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:48:24,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:48:24,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:48:24,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:48:24,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:48:24,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:48:24,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:48:24,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:48:24,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:48:24,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:48:24,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:48:24,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:48:24,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:48:24,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:48:24,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:48:24,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:48:24,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:48:24,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:48:24,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:48:24,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:48:24,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:48:24,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:48:24,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:48:24,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:48:24,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:48:24,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:48:24,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:48:24,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:48:24,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:48:24,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:48:24,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:48:24,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:48:24,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:48:24,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:48:24,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:48:24,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:48:24,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:48:24,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:48:24,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:48:24,660 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:48:24,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:48:24,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:48:24,672 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:48:24,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:48:24,673 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:48:24,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:48:24,673 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:48:24,674 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:48:24,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:48:24,674 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:48:24,675 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:48:24,675 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:48:24,675 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:48:24,675 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:48:24,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:48:24,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:48:24,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:48:24,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:48:24,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:48:24,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:48:24,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:48:24,678 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:48:24,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:48:24,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:48:24,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:48:24,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:48:24,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:48:24,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:48:24,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:48:24,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:48:24,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:48:24,682 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:48:24,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:48:24,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:48:24,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:48:24,683 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan 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 -> Taipan 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 -> 256a9ac0f321f0d2863fb720d2ae6cb61570c373 [2019-11-26 02:48:24,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:48:24,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:48:24,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:48:24,842 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:48:24,842 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:48:24,843 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2019-11-26 02:48:24,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/data/c2e5c8fce/074b17c343cc424a8f375fac5f160589/FLAG0c6696b0a [2019-11-26 02:48:25,302 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:48:25,303 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2019-11-26 02:48:25,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/data/c2e5c8fce/074b17c343cc424a8f375fac5f160589/FLAG0c6696b0a [2019-11-26 02:48:25,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/data/c2e5c8fce/074b17c343cc424a8f375fac5f160589 [2019-11-26 02:48:25,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:48:25,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:48:25,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:25,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:48:25,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:48:25,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:25" (1/1) ... [2019-11-26 02:48:25,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199165bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:25, skipping insertion in model container [2019-11-26 02:48:25,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:25" (1/1) ... [2019-11-26 02:48:25,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:48:25,781 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:48:26,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:26,017 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:48:26,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:26,060 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:48:26,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26 WrapperNode [2019-11-26 02:48:26,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:26,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:26,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:48:26,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:48:26,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:26,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:48:26,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:48:26,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:48:26,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... [2019-11-26 02:48:26,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:48:26,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:48:26,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:48:26,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:48:26,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/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 [2019-11-26 02:48:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:48:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:48:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:48:26,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:48:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:48:26,600 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:48:26,600 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-26 02:48:26,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:26 BoogieIcfgContainer [2019-11-26 02:48:26,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:48:26,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:48:26,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:48:26,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:48:26,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:48:25" (1/3) ... [2019-11-26 02:48:26,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43540e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:26, skipping insertion in model container [2019-11-26 02:48:26,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:26" (2/3) ... [2019-11-26 02:48:26,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43540e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:26, skipping insertion in model container [2019-11-26 02:48:26,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:26" (3/3) ... [2019-11-26 02:48:26,609 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrcmp.c [2019-11-26 02:48:26,617 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:48:26,623 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-26 02:48:26,630 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-26 02:48:26,649 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:48:26,649 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:48:26,649 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:48:26,649 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:48:26,649 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:48:26,649 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:48:26,649 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:48:26,650 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:48:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-26 02:48:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-11-26 02:48:26,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:26,667 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-11-26 02:48:26,667 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:48:26,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:26,671 INFO L82 PathProgramCache]: Analyzing trace with hash 3481, now seen corresponding path program 1 times [2019-11-26 02:48:26,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:26,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485938762] [2019-11-26 02:48:26,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:48:26,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485938762] [2019-11-26 02:48:26,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:26,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:48:26,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121690938] [2019-11-26 02:48:26,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:48:26,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:48:26,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:48:26,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:48:26,833 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-11-26 02:48:26,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:26,895 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-26 02:48:26,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:48:26,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-11-26 02:48:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:26,905 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:48:26,905 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:48:26,908 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:48:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:48:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:48:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:48:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2019-11-26 02:48:26,943 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 2 [2019-11-26 02:48:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:26,943 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2019-11-26 02:48:26,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:48:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2019-11-26 02:48:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:48:26,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:26,945 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:48:26,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:48:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:26,947 INFO L82 PathProgramCache]: Analyzing trace with hash 107953, now seen corresponding path program 1 times [2019-11-26 02:48:26,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:26,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930570372] [2019-11-26 02:48:26,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:48:27,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930570372] [2019-11-26 02:48:27,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:27,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:48:27,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633064311] [2019-11-26 02:48:27,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:48:27,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:48:27,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:48:27,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:48:27,004 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2019-11-26 02:48:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:27,033 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-11-26 02:48:27,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:48:27,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:48:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:27,034 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:48:27,034 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:48:27,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:48:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:48:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:48:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:48:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-11-26 02:48:27,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 3 [2019-11-26 02:48:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:27,038 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-11-26 02:48:27,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:48:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-11-26 02:48:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:48:27,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:27,039 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:48:27,039 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:48:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash 103744243, now seen corresponding path program 1 times [2019-11-26 02:48:27,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:27,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965618595] [2019-11-26 02:48:27,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:48:27,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965618595] [2019-11-26 02:48:27,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:27,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:48:27,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780774581] [2019-11-26 02:48:27,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:48:27,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:48:27,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:48:27,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:48:27,105 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2019-11-26 02:48:27,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:27,129 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-26 02:48:27,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:48:27,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:48:27,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:27,131 INFO L225 Difference]: With dead ends: 11 [2019-11-26 02:48:27,131 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:48:27,131 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:48:27,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:48:27,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:48:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:48:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:48:27,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-26 02:48:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:27,132 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:48:27,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:48:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:48:27,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:48:27,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:48:27,200 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:48:27,201 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:48:27,201 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-26 02:48:27,201 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:48:27,201 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-26 02:48:27,201 INFO L444 ceAbstractionStarter]: For program point L32-3(lines 32 35) no Hoare annotation was computed. [2019-11-26 02:48:27,202 INFO L440 ceAbstractionStarter]: At program point L32-5(lines 32 35) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2019-11-26 02:48:27,202 INFO L440 ceAbstractionStarter]: At program point L32-6(lines 32 35) the Hoare annotation is: (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) [2019-11-26 02:48:27,202 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-26 02:48:27,202 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:48:27,202 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-11-26 02:48:27,202 INFO L444 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-26 02:48:27,202 INFO L444 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-26 02:48:27,203 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:48:27,203 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-26 02:48:27,203 INFO L440 ceAbstractionStarter]: At program point L18-1(line 18) the Hoare annotation is: (and (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2019-11-26 02:48:27,203 INFO L444 ceAbstractionStarter]: For program point L18-2(line 18) no Hoare annotation was computed. [2019-11-26 02:48:27,203 INFO L440 ceAbstractionStarter]: At program point L18-3(line 18) the Hoare annotation is: (and (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2019-11-26 02:48:27,203 INFO L444 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-11-26 02:48:27,204 INFO L444 ceAbstractionStarter]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2019-11-26 02:48:27,204 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:48:27,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:48:27 BoogieIcfgContainer [2019-11-26 02:48:27,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:48:27,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:48:27,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:48:27,220 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:48:27,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:26" (3/4) ... [2019-11-26 02:48:27,224 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:48:27,236 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:48:27,236 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-26 02:48:27,237 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:48:27,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9848c971-98b2-4609-a6bb-99f497080be9/bin/utaipan/witness.graphml [2019-11-26 02:48:27,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:48:27,291 INFO L168 Benchmark]: Toolchain (without parser) took 1539.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -106.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:27,292 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:48:27,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:27,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:48:27,293 INFO L168 Benchmark]: Boogie Preprocessor took 27.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:27,294 INFO L168 Benchmark]: RCFGBuilder took 478.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:27,294 INFO L168 Benchmark]: TraceAbstraction took 616.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:27,295 INFO L168 Benchmark]: Witness Printer took 69.42 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:27,297 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 478.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 616.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * Witness Printer took 69.42 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: length <= 2147483647 && 1 <= length - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: length <= 2147483647 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: length <= 2147483647 && 1 <= length - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 8 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 25 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5 NumberOfFragments, 20 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...