./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.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_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/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 0564e568992a96ba006237c1af458e049de52506 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:04:32,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:04:32,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:04:32,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:04:32,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:04:32,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:04:32,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:04:32,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:04:32,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:04:32,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:04:32,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:04:32,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:04:32,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:04:32,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:04:32,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:04:32,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:04:32,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:04:32,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:04:32,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:04:32,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:04:32,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:04:32,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:04:32,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:04:32,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:04:32,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:04:32,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:04:32,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:04:32,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:04:32,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:04:32,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:04:32,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:04:32,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:04:32,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:04:32,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:04:32,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:04:32,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:04:32,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:04:32,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:04:32,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:04:32,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:04:32,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:04:32,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:04:32,319 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:04:32,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:04:32,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:04:32,320 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:04:32,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:04:32,321 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:04:32,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:04:32,321 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:04:32,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:04:32,322 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:04:32,322 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:04:32,322 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:04:32,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:04:32,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:04:32,323 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:04:32,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:04:32,323 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:04:32,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:04:32,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:04:32,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:04:32,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:04:32,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:04:32,325 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:04:32,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:04:32,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:04:32,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:04:32,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:04:32,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:04:32,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:04:32,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:04:32,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:04:32,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:04:32,327 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:04:32,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:04:32,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:04:32,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:04:32,328 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_6cc51921-612b-4bc8-8745-cccedc85c991/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 -> 0564e568992a96ba006237c1af458e049de52506 [2019-11-26 02:04:32,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:04:32,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:04:32,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:04:32,472 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:04:32,472 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:04:32,473 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-26 02:04:32,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/data/1cae4a9c7/917aa18c2e204499a21931ebfb22dec0/FLAGe0076b5dd [2019-11-26 02:04:32,913 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:04:32,914 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-26 02:04:32,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/data/1cae4a9c7/917aa18c2e204499a21931ebfb22dec0/FLAGe0076b5dd [2019-11-26 02:04:33,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/data/1cae4a9c7/917aa18c2e204499a21931ebfb22dec0 [2019-11-26 02:04:33,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:04:33,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:04:33,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:33,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:04:33,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:04:33,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b3a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33, skipping insertion in model container [2019-11-26 02:04:33,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:04:33,333 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:04:33,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:33,518 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:04:33,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:33,602 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:04:33,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33 WrapperNode [2019-11-26 02:04:33,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:33,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:33,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:04:33,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:04:33,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:33,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:04:33,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:04:33,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:04:33,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... [2019-11-26 02:04:33,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:04:33,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:04:33,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:04:33,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:04:33,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/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 02:04:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:04:33,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:04:33,860 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:04:33,861 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:04:33,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:33 BoogieIcfgContainer [2019-11-26 02:04:33,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:04:33,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:04:33,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:04:33,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:04:33,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:04:33" (1/3) ... [2019-11-26 02:04:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff99bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:33, skipping insertion in model container [2019-11-26 02:04:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:33" (2/3) ... [2019-11-26 02:04:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff99bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:33, skipping insertion in model container [2019-11-26 02:04:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:33" (3/3) ... [2019-11-26 02:04:33,868 INFO L109 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-26 02:04:33,874 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:04:33,878 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:04:33,888 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:04:33,904 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:04:33,904 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:04:33,905 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:04:33,905 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:04:33,905 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:04:33,905 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:04:33,905 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:04:33,905 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:04:33,917 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:04:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:04:33,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:33,922 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:04:33,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-26 02:04:33,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:33,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248986040] [2019-11-26 02:04:33,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:34,036 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 02:04:34,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248986040] [2019-11-26 02:04:34,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:34,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:04:34,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807386413] [2019-11-26 02:04:34,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:04:34,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:34,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:04:34,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:04:34,061 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-26 02:04:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:34,120 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-26 02:04:34,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:04:34,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:04:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:34,129 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:04:34,129 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:04:34,132 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 02:04:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:04:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-26 02:04:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:04:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:04:34,163 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-26 02:04:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:34,163 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:04:34,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:04:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:04:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:04:34,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:34,164 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:04:34,164 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-26 02:04:34,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:34,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99079811] [2019-11-26 02:04:34,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:34,192 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 02:04:34,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99079811] [2019-11-26 02:04:34,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:34,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:04:34,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988485725] [2019-11-26 02:04:34,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:04:34,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:04:34,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:04:34,196 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-26 02:04:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:34,248 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-26 02:04:34,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:04:34,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-26 02:04:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:34,249 INFO L225 Difference]: With dead ends: 17 [2019-11-26 02:04:34,250 INFO L226 Difference]: Without dead ends: 15 [2019-11-26 02:04:34,251 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:04:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-26 02:04:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-26 02:04:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:04:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-26 02:04:34,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2019-11-26 02:04:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:34,254 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-26 02:04:34,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:04:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-26 02:04:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:04:34,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:34,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:04:34,255 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:34,256 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-26 02:04:34,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:34,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378556788] [2019-11-26 02:04:34,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:34,279 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 02:04:34,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378556788] [2019-11-26 02:04:34,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:34,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:04:34,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237731059] [2019-11-26 02:04:34,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:04:34,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:34,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:04:34,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:04:34,281 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2019-11-26 02:04:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:34,300 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-26 02:04:34,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:04:34,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:04:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:34,301 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:04:34,301 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:04:34,302 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 02:04:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:04:34,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:04:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:04:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-26 02:04:34,305 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2019-11-26 02:04:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:34,305 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-26 02:04:34,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:04:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-26 02:04:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:04:34,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:34,306 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:34,307 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:34,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:34,307 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-26 02:04:34,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:34,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893601880] [2019-11-26 02:04:34,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:34,383 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 02:04:34,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893601880] [2019-11-26 02:04:34,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334201356] [2019-11-26 02:04:34,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/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 02:04:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:34,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:04:34,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:34,501 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:34,538 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 02:04:34,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:04:34,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 10 [2019-11-26 02:04:34,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942620504] [2019-11-26 02:04:34,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:04:34,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:34,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:04:34,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:04:34,541 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-11-26 02:04:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:34,601 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-26 02:04:34,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:04:34,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-26 02:04:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:34,602 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:04:34,602 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:04:34,603 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:04:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:04:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-26 02:04:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:04:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:04:34,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2019-11-26 02:04:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:34,606 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:04:34,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:04:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:04:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:04:34,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:34,607 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-26 02:04:34,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:34,808 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:34,808 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2019-11-26 02:04:34,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:34,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901347713] [2019-11-26 02:04:34,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:34,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901347713] [2019-11-26 02:04:34,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141570179] [2019-11-26 02:04:34,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/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 02:04:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:34,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:04:34,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:34,930 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:34,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:04:34,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [3] total 9 [2019-11-26 02:04:34,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707994599] [2019-11-26 02:04:34,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:04:34,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:34,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:04:34,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:04:34,965 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2019-11-26 02:04:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:34,997 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-26 02:04:34,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:04:34,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-26 02:04:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:34,998 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:04:34,998 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:04:34,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:04:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:04:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:04:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:04:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-26 02:04:35,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-11-26 02:04:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:35,001 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-26 02:04:35,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:04:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-26 02:04:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:04:35,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:35,002 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-26 02:04:35,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:35,203 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:35,203 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-26 02:04:35,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:35,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049205381] [2019-11-26 02:04:35,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:35,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049205381] [2019-11-26 02:04:35,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210197976] [2019-11-26 02:04:35,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:35,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:04:35,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:35,270 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:35,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137265902] [2019-11-26 02:04:35,310 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:04:35,311 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:04:35,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:04:35,322 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:04:35,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:04:35,536 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:04:35,719 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:04:35,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:04:35,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2019-11-26 02:04:35,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713473777] [2019-11-26 02:04:35,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:04:35,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:04:35,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:04:35,721 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2019-11-26 02:04:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:35,767 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-11-26 02:04:35,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:04:35,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-26 02:04:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:35,768 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:04:35,769 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:04:35,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:04:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:04:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-26 02:04:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:04:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-26 02:04:35,773 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2019-11-26 02:04:35,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:35,774 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-26 02:04:35,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:04:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-26 02:04:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:04:35,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:35,775 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-26 02:04:35,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:35,981 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:35,981 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2019-11-26 02:04:35,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:35,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495422089] [2019-11-26 02:04:35,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:36,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495422089] [2019-11-26 02:04:36,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404716572] [2019-11-26 02:04:36,047 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:36,080 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:04:36,080 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:04:36,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:04:36,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:36,089 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:36,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [741090141] [2019-11-26 02:04:36,162 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:04:36,162 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:04:36,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:04:36,163 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:04:36,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:04:36,281 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:04:36,512 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:04:36,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:04:36,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2019-11-26 02:04:36,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452874275] [2019-11-26 02:04:36,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:04:36,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:36,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:04:36,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:04:36,515 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2019-11-26 02:04:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:36,595 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-11-26 02:04:36,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:04:36,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2019-11-26 02:04:36,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:36,596 INFO L225 Difference]: With dead ends: 57 [2019-11-26 02:04:36,596 INFO L226 Difference]: Without dead ends: 56 [2019-11-26 02:04:36,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:04:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-26 02:04:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-26 02:04:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-26 02:04:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2019-11-26 02:04:36,606 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2019-11-26 02:04:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:36,606 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2019-11-26 02:04:36,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:04:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2019-11-26 02:04:36,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-26 02:04:36,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:36,609 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-26 02:04:36,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:36,812 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:36,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2019-11-26 02:04:36,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:36,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091990852] [2019-11-26 02:04:36,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:36,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091990852] [2019-11-26 02:04:36,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083459549] [2019-11-26 02:04:36,976 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:37,020 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-26 02:04:37,021 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:04:37,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:04:37,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:37,048 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:37,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291837348] [2019-11-26 02:04:37,343 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:04:37,343 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:04:37,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:04:37,344 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:04:37,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:04:37,439 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:04:37,841 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:04:37,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:04:37,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2019-11-26 02:04:37,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110107461] [2019-11-26 02:04:37,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-26 02:04:37,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:37,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-26 02:04:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2019-11-26 02:04:37,844 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 24 states. [2019-11-26 02:04:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:38,027 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2019-11-26 02:04:38,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-26 02:04:38,027 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2019-11-26 02:04:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:38,029 INFO L225 Difference]: With dead ends: 117 [2019-11-26 02:04:38,029 INFO L226 Difference]: Without dead ends: 116 [2019-11-26 02:04:38,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2019-11-26 02:04:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-26 02:04:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-11-26 02:04:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-26 02:04:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2019-11-26 02:04:38,041 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2019-11-26 02:04:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:38,041 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2019-11-26 02:04:38,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-26 02:04:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2019-11-26 02:04:38,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-26 02:04:38,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:38,046 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2019-11-26 02:04:38,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:38,247 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 4 times [2019-11-26 02:04:38,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:38,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329781910] [2019-11-26 02:04:38,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:38,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329781910] [2019-11-26 02:04:38,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982352450] [2019-11-26 02:04:38,788 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:38,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-26 02:04:38,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:38,900 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:39,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [913411215] [2019-11-26 02:04:39,774 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:04:39,774 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:04:39,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:04:39,776 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:04:39,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:04:39,860 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:04:40,785 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:04:40,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:04:40,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2019-11-26 02:04:40,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816511911] [2019-11-26 02:04:40,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-26 02:04:40,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-26 02:04:40,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2019-11-26 02:04:40,789 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 48 states. [2019-11-26 02:04:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:41,081 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2019-11-26 02:04:41,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-26 02:04:41,082 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 115 [2019-11-26 02:04:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:41,084 INFO L225 Difference]: With dead ends: 237 [2019-11-26 02:04:41,084 INFO L226 Difference]: Without dead ends: 236 [2019-11-26 02:04:41,086 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 292 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2019-11-26 02:04:41,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-11-26 02:04:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2019-11-26 02:04:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-11-26 02:04:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2019-11-26 02:04:41,120 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2019-11-26 02:04:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:41,120 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2019-11-26 02:04:41,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-26 02:04:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2019-11-26 02:04:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-11-26 02:04:41,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:41,130 INFO L410 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2019-11-26 02:04:41,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:41,333 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:41,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1923709923, now seen corresponding path program 5 times [2019-11-26 02:04:41,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:41,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364109171] [2019-11-26 02:04:41,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:42,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364109171] [2019-11-26 02:04:42,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231215397] [2019-11-26 02:04:42,892 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:42,923 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:04:42,923 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:04:42,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:04:42,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2019-11-26 02:04:43,355 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2019-11-26 02:04:43,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1252274579] [2019-11-26 02:04:43,803 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:04:43,803 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:04:43,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:04:43,803 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:04:43,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:04:43,881 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:04:46,797 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:04:46,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:04:46,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 8, 8] total 62 [2019-11-26 02:04:46,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382192884] [2019-11-26 02:04:46,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 63 states [2019-11-26 02:04:46,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2019-11-26 02:04:46,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1556, Invalid=3000, Unknown=0, NotChecked=0, Total=4556 [2019-11-26 02:04:46,802 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 63 states. [2019-11-26 02:04:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:54,125 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2019-11-26 02:04:54,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2019-11-26 02:04:54,126 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 235 [2019-11-26 02:04:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:54,127 INFO L225 Difference]: With dead ends: 243 [2019-11-26 02:04:54,127 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:04:54,146 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 637 SyntacticMatches, 47 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16506 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=12307, Invalid=32425, Unknown=0, NotChecked=0, Total=44732 [2019-11-26 02:04:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:04:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:04:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:04:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:04:54,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2019-11-26 02:04:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:54,147 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:04:54,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 63 states. [2019-11-26 02:04:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:04:54,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:04:54,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:54,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:04:54,669 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 27 [2019-11-26 02:04:54,672 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:04:54,672 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:04:54,672 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-26 02:04:54,672 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-26 02:04:54,672 INFO L444 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-26 02:04:54,673 INFO L440 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 24 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~x~0 2147483624) .cse0 (<= ULTIMATE.start_main_~y~0 24)) (and (<= 23 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 23) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483624))) (and .cse0 (<= ULTIMATE.start_main_~y~0 2147483646) (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1))))) [2019-11-26 02:04:54,673 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:04:54,673 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-26 02:04:54,673 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:04:54,673 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-26 02:04:54,674 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-26 02:04:54,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:04:54 BoogieIcfgContainer [2019-11-26 02:04:54,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:04:54,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:04:54,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:04:54,691 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:04:54,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:33" (3/4) ... [2019-11-26 02:04:54,695 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:04:54,709 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:04:54,710 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:04:54,710 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:04:54,761 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6cc51921-612b-4bc8-8745-cccedc85c991/bin/utaipan/witness.graphml [2019-11-26 02:04:54,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:04:54,762 INFO L168 Benchmark]: Toolchain (without parser) took 21459.20 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 429.4 MB). Free memory was 950.1 MB in the beginning and 934.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 445.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:54,762 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:54,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:54,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:54,763 INFO L168 Benchmark]: Boogie Preprocessor took 15.99 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:54,763 INFO L168 Benchmark]: RCFGBuilder took 217.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:54,764 INFO L168 Benchmark]: TraceAbstraction took 20827.50 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 310.4 MB). Free memory was 1.1 GB in the beginning and 938.3 MB in the end (delta: 156.6 MB). Peak memory consumption was 467.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:54,764 INFO L168 Benchmark]: Witness Printer took 70.62 ms. Allocated memory is still 1.5 GB. Free memory was 938.3 MB in the beginning and 934.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:54,766 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.99 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 217.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20827.50 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 310.4 MB). Free memory was 1.1 GB in the beginning and 938.3 MB in the end (delta: 156.6 MB). Peak memory consumption was 467.0 MB. Max. memory is 11.5 GB. * Witness Printer took 70.62 ms. Allocated memory is still 1.5 GB. Free memory was 938.3 MB in the beginning and 934.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 19]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((x <= 2147483624 && 24 <= y) && y <= 24) || ((23 <= y && y <= 23) && x <= y + 2147483624)) || ((24 <= y && y <= 2147483646) && y <= (x * -1 + 2147483648) / 2 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Result: SAFE, OverallTime: 20.7s, OverallIterations: 10, TraceHistogramMax: 47, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 29 SDtfs, 371 SDslu, 84 SDs, 0 SdLazy, 734 SolverSat, 218 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1586 GetRequests, 1160 SyntacticMatches, 89 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19157 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=9, 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, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 49 NumberOfFragments, 41 HoareAnnotationTreeSize, 1 FomulaSimplifications, 132 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 1421 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 927 NumberOfCodeBlocks, 717 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1360 ConstructedInterpolants, 3 QuantifiedInterpolants, 463110 SizeOfPredicates, 7 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 10684/20766 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...