./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.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_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:08:05,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:08:05,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:08:05,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:08:05,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:08:05,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:08:05,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:08:05,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:08:05,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:08:05,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:08:05,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:08:05,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:08:05,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:08:05,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:08:05,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:08:05,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:08:05,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:08:05,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:08:05,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:08:05,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:08:05,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:08:05,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:08:05,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:08:05,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:08:05,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:08:05,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:08:05,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:08:05,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:08:05,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:08:05,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:08:05,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:08:05,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:08:05,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:08:05,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:08:05,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:08:05,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:08:05,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:08:05,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:08:05,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:08:05,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:08:05,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:08:05,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:08:06,014 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:08:06,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:08:06,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:08:06,025 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:08:06,025 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:08:06,026 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:08:06,026 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:08:06,026 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:08:06,026 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:08:06,026 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:08:06,027 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:08:06,027 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:08:06,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:08:06,027 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:08:06,028 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:08:06,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:08:06,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:08:06,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:08:06,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:08:06,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:08:06,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:08:06,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:08:06,030 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:08:06,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:08:06,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:08:06,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:08:06,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:08:06,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:08:06,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:08:06,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:08:06,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:08:06,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:08:06,033 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:08:06,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:08:06,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:08:06,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:08:06,034 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_ab0e72bd-f487-4841-bcd5-96baea42260d/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 -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2019-11-26 02:08:06,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:08:06,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:08:06,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:08:06,192 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:08:06,193 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:08:06,193 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2019-11-26 02:08:06,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/data/d14fc7415/53c96e95d6fc4537a9a0d9071a72c204/FLAG2ab3a12fc [2019-11-26 02:08:06,626 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:08:06,626 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2019-11-26 02:08:06,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/data/d14fc7415/53c96e95d6fc4537a9a0d9071a72c204/FLAG2ab3a12fc [2019-11-26 02:08:06,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/data/d14fc7415/53c96e95d6fc4537a9a0d9071a72c204 [2019-11-26 02:08:06,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:08:06,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:08:06,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:08:06,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:08:06,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:08:06,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06, skipping insertion in model container [2019-11-26 02:08:06,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:08:06,676 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:08:06,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:08:06,835 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:08:06,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:08:06,923 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:08:06,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06 WrapperNode [2019-11-26 02:08:06,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:08:06,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:08:06,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:08:06,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:08:06,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:08:06,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:08:06,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:08:06,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:08:06,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... [2019-11-26 02:08:06,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:08:06,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:08:06,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:08:06,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:08:06,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/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 02:08:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:08:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:08:07,209 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:08:07,209 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:08:07,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:08:07 BoogieIcfgContainer [2019-11-26 02:08:07,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:08:07,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:08:07,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:08:07,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:08:07,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:08:06" (1/3) ... [2019-11-26 02:08:07,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65353b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:08:07, skipping insertion in model container [2019-11-26 02:08:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:08:06" (2/3) ... [2019-11-26 02:08:07,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65353b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:08:07, skipping insertion in model container [2019-11-26 02:08:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:08:07" (3/3) ... [2019-11-26 02:08:07,216 INFO L109 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2019-11-26 02:08:07,225 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:08:07,230 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:08:07,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:08:07,257 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:08:07,258 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:08:07,258 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:08:07,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:08:07,262 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:08:07,262 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:08:07,262 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:08:07,263 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:08:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-26 02:08:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:08:07,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:08:07,284 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:08:07,285 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:08:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:08:07,290 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-26 02:08:07,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:08:07,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394196736] [2019-11-26 02:08:07,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:08:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:07,413 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 02:08:07,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394196736] [2019-11-26 02:08:07,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:08:07,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:08:07,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969816134] [2019-11-26 02:08:07,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:08:07,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:08:07,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:08:07,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:08:07,434 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-11-26 02:08:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:08:07,479 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-26 02:08:07,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:08:07,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:08:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:08:07,488 INFO L225 Difference]: With dead ends: 22 [2019-11-26 02:08:07,489 INFO L226 Difference]: Without dead ends: 19 [2019-11-26 02:08:07,491 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:08:07,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-26 02:08:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2019-11-26 02:08:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:08:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-26 02:08:07,514 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2019-11-26 02:08:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:08:07,514 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-26 02:08:07,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:08:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-26 02:08:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:08:07,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:08:07,515 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:08:07,516 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:08:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:08:07,516 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2019-11-26 02:08:07,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:08:07,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573287238] [2019-11-26 02:08:07,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:08:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:07,548 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 02:08:07,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573287238] [2019-11-26 02:08:07,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:08:07,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:08:07,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225852923] [2019-11-26 02:08:07,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:08:07,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:08:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:08:07,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:08:07,551 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2019-11-26 02:08:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:08:07,655 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2019-11-26 02:08:07,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:08:07,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-26 02:08:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:08:07,656 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:08:07,656 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:08:07,657 INFO L630 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 [2019-11-26 02:08:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:08:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2019-11-26 02:08:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:08:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-26 02:08:07,662 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 4 [2019-11-26 02:08:07,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:08:07,662 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-26 02:08:07,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:08:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-26 02:08:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:08:07,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:08:07,663 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:08:07,663 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:08:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:08:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-11-26 02:08:07,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:08:07,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049210421] [2019-11-26 02:08:07,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:08:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:07,682 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 02:08:07,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049210421] [2019-11-26 02:08:07,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:08:07,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:08:07,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514613242] [2019-11-26 02:08:07,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:08:07,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:08:07,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:08:07,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:08:07,684 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 3 states. [2019-11-26 02:08:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:08:07,703 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-11-26 02:08:07,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:08:07,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:08:07,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:08:07,704 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:08:07,705 INFO L226 Difference]: Without dead ends: 19 [2019-11-26 02:08:07,705 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:08:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-26 02:08:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-26 02:08:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:08:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-26 02:08:07,709 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 5 [2019-11-26 02:08:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:08:07,710 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-26 02:08:07,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:08:07,710 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-26 02:08:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:08:07,710 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:08:07,710 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:08:07,711 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:08:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:08:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2019-11-26 02:08:07,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:08:07,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464066789] [2019-11-26 02:08:07,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:08:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:07,728 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 02:08:07,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464066789] [2019-11-26 02:08:07,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:08:07,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:08:07,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143917335] [2019-11-26 02:08:07,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:08:07,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:08:07,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:08:07,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:08:07,731 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2019-11-26 02:08:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:08:07,742 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-11-26 02:08:07,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:08:07,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:08:07,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:08:07,743 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:08:07,743 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:08:07,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:08:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:08:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:08:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:08:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-26 02:08:07,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2019-11-26 02:08:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:08:07,747 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-26 02:08:07,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:08:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-26 02:08:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:08:07,747 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:08:07,748 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-26 02:08:07,748 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:08:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:08:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2019-11-26 02:08:07,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:08:07,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399720272] [2019-11-26 02:08:07,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:08:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:08:07,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399720272] [2019-11-26 02:08:07,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728080282] [2019-11-26 02:08:07,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/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 [2019-11-26 02:08:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:07,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:08:07,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:08:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:08:07,834 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:08:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:08:07,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853191736] [2019-11-26 02:08:07,879 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-11-26 02:08:07,880 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:08:07,885 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:08:07,891 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:08:07,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:08:08,099 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:08:08,243 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:08:08,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:08:08,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-11-26 02:08:08,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585369724] [2019-11-26 02:08:08,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:08:08,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:08:08,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:08:08,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:08:08,245 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2019-11-26 02:08:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:08:08,290 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-26 02:08:08,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:08:08,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-26 02:08:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:08:08,293 INFO L225 Difference]: With dead ends: 33 [2019-11-26 02:08:08,293 INFO L226 Difference]: Without dead ends: 32 [2019-11-26 02:08:08,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:08:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-26 02:08:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2019-11-26 02:08:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:08:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-26 02:08:08,299 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 7 [2019-11-26 02:08:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:08:08,299 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-26 02:08:08,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:08:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-26 02:08:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:08:08,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:08:08,300 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:08:08,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:08:08,503 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:08:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:08:08,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1360165828, now seen corresponding path program 1 times [2019-11-26 02:08:08,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:08:08,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231948626] [2019-11-26 02:08:08,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:08:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:08:08,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231948626] [2019-11-26 02:08:08,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:08:08,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:08:08,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260780967] [2019-11-26 02:08:08,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:08:08,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:08:08,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:08:08,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:08:08,548 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-11-26 02:08:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:08:08,560 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-11-26 02:08:08,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:08:08,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-26 02:08:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:08:08,562 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:08:08,563 INFO L226 Difference]: Without dead ends: 19 [2019-11-26 02:08:08,563 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 02:08:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-26 02:08:08,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-26 02:08:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:08:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-26 02:08:08,567 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 7 [2019-11-26 02:08:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:08:08,567 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-26 02:08:08,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:08:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-26 02:08:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:08:08,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:08:08,568 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2019-11-26 02:08:08,568 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:08:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:08:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1477250187, now seen corresponding path program 2 times [2019-11-26 02:08:08,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:08:08,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102084058] [2019-11-26 02:08:08,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:08:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:08:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:08:08,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102084058] [2019-11-26 02:08:08,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037493912] [2019-11-26 02:08:08,627 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/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 [2019-11-26 02:08:08,656 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-26 02:08:08,657 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:08:08,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:08:08,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:08:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-26 02:08:08,684 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:08:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-26 02:08:08,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1655709318] [2019-11-26 02:08:08,694 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-11-26 02:08:08,694 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:08:08,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:08:08,695 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:08:08,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:08:08,767 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:08:08,938 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:08:08,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:08:08,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2019-11-26 02:08:08,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281151273] [2019-11-26 02:08:08,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:08:08,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:08:08,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:08:08,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:08:08,940 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 9 states. [2019-11-26 02:08:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:08:09,107 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-11-26 02:08:09,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:08:09,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-11-26 02:08:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:08:09,108 INFO L225 Difference]: With dead ends: 39 [2019-11-26 02:08:09,108 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:08:09,109 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2019-11-26 02:08:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:08:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:08:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:08:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:08:09,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-26 02:08:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:08:09,110 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:08:09,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:08:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:08:09,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:08:09,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:08:09,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:08:09,357 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:08:09,357 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:08:09,357 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-26 02:08:09,357 INFO L440 ceAbstractionStarter]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 1 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-26 02:08:09,357 INFO L444 ceAbstractionStarter]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2019-11-26 02:08:09,358 INFO L440 ceAbstractionStarter]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-26 02:08:09,358 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:08:09,358 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-26 02:08:09,358 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:08:09,358 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-26 02:08:09,358 INFO L444 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-26 02:08:09,358 INFO L444 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-26 02:08:09,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:08:09 BoogieIcfgContainer [2019-11-26 02:08:09,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:08:09,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:08:09,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:08:09,372 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:08:09,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:08:07" (3/4) ... [2019-11-26 02:08:09,380 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:08:09,389 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 02:08:09,390 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:08:09,390 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:08:09,427 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ab0e72bd-f487-4841-bcd5-96baea42260d/bin/utaipan/witness.graphml [2019-11-26 02:08:09,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:08:09,429 INFO L168 Benchmark]: Toolchain (without parser) took 2781.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 944.8 MB in the beginning and 963.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 146.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:08:09,429 INFO L168 Benchmark]: CDTParser took 0.22 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 02:08:09,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -212.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:08:09,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.67 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. [2019-11-26 02:08:09,431 INFO L168 Benchmark]: Boogie Preprocessor took 19.34 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. [2019-11-26 02:08:09,431 INFO L168 Benchmark]: RCFGBuilder took 234.89 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:08:09,432 INFO L168 Benchmark]: TraceAbstraction took 2160.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.9 MB in the end (delta: 172.1 MB). Peak memory consumption was 172.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:08:09,432 INFO L168 Benchmark]: Witness Printer took 55.44 ms. Allocated memory is still 1.2 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:08:09,434 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 275.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -212.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.67 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 19.34 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 234.89 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2160.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.9 MB in the end (delta: 172.1 MB). Peak memory consumption was 172.1 MB. Max. memory is 11.5 GB. * Witness Printer took 55.44 ms. Allocated memory is still 1.2 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (x <= 2147483647 && 1 <= y) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 101 SDslu, 22 SDs, 0 SdLazy, 132 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=5, 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, 7 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 15 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 135 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 71 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2513 SizeOfPredicates, 2 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 45/85 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...