./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0497b69437c9ebb889888bdb31aaefcc8eaad029 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:03:22,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:03:22,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:03:22,995 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:03:22,995 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:03:22,996 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:03:22,997 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:03:22,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:03:22,999 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:03:23,000 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:03:23,000 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:03:23,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:03:23,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:03:23,002 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:03:23,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:03:23,003 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:03:23,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:03:23,005 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:03:23,006 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:03:23,007 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:03:23,008 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:03:23,008 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:03:23,010 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:03:23,010 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:03:23,010 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:03:23,011 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:03:23,011 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:03:23,012 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:03:23,012 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:03:23,013 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:03:23,013 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:03:23,014 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:03:23,014 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:03:23,014 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:03:23,015 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:03:23,015 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:03:23,015 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:03:23,024 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:03:23,025 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:03:23,025 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:03:23,025 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:03:23,025 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:03:23,026 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:03:23,026 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:03:23,026 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:03:23,026 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:03:23,026 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:03:23,026 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:03:23,026 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:03:23,026 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:03:23,027 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:03:23,027 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:03:23,027 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:03:23,027 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:03:23,027 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:03:23,028 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:03:23,028 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:03:23,028 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:03:23,028 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:03:23,028 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:03:23,028 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:03:23,028 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:03:23,028 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:03:23,029 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:03:23,029 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:03:23,029 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:03:23,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:03:23,029 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:03:23,029 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:03:23,029 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:03:23,029 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:03:23,030 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:03:23,030 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:03:23,030 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:03:23,030 INFO L133 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/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2018-11-18 16:03:23,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:03:23,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:03:23,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:03:23,067 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:03:23,067 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:03:23,068 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 16:03:23,103 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/data/3f6dce17d/465fe402ef954f04958ad41709c843df/FLAG539988327 [2018-11-18 16:03:23,412 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:03:23,412 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 16:03:23,416 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/data/3f6dce17d/465fe402ef954f04958ad41709c843df/FLAG539988327 [2018-11-18 16:03:23,425 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/data/3f6dce17d/465fe402ef954f04958ad41709c843df [2018-11-18 16:03:23,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:03:23,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:03:23,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:03:23,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:03:23,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:03:23,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6527c23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23, skipping insertion in model container [2018-11-18 16:03:23,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:03:23,455 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:03:23,557 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:03:23,559 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:03:23,569 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:03:23,577 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:03:23,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23 WrapperNode [2018-11-18 16:03:23,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:03:23,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:03:23,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:03:23,578 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:03:23,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:03:23,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:03:23,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:03:23,589 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:03:23,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... [2018-11-18 16:03:23,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:03:23,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:03:23,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:03:23,601 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:03:23,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/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 [2018-11-18 16:03:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:03:23,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:03:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-18 16:03:23,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-18 16:03:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:03:23,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:03:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:03:23,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:03:23,778 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:03:23,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:03:23 BoogieIcfgContainer [2018-11-18 16:03:23,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:03:23,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:03:23,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:03:23,781 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:03:23,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:03:23" (1/3) ... [2018-11-18 16:03:23,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b61ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:03:23, skipping insertion in model container [2018-11-18 16:03:23,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:23" (2/3) ... [2018-11-18 16:03:23,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b61ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:03:23, skipping insertion in model container [2018-11-18 16:03:23,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:03:23" (3/3) ... [2018-11-18 16:03:23,783 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 16:03:23,789 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:03:23,793 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:03:23,802 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:03:23,828 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:03:23,828 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:03:23,828 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:03:23,828 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:03:23,828 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:03:23,828 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:03:23,829 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:03:23,829 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:03:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-18 16:03:23,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 16:03:23,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:23,846 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:23,847 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:23,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1001932622, now seen corresponding path program 1 times [2018-11-18 16:03:23,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:03:23,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:23,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:23,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:23,892 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:03:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:23,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:23,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 16:03:23,998 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:03:24,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:03:24,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:03:24,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:03:24,011 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2018-11-18 16:03:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:24,126 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2018-11-18 16:03:24,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:03:24,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-18 16:03:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:24,134 INFO L225 Difference]: With dead ends: 40 [2018-11-18 16:03:24,134 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 16:03:24,136 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:03:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 16:03:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 16:03:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 16:03:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2018-11-18 16:03:24,165 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2018-11-18 16:03:24,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:24,166 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-18 16:03:24,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:03:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2018-11-18 16:03:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 16:03:24,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:24,167 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:24,167 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:24,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:24,168 INFO L82 PathProgramCache]: Analyzing trace with hash -423841111, now seen corresponding path program 1 times [2018-11-18 16:03:24,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:03:24,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:24,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,169 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:03:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:24,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:24,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 16:03:24,221 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:03:24,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:03:24,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:03:24,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:03:24,223 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2018-11-18 16:03:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:24,248 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2018-11-18 16:03:24,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:03:24,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-18 16:03:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:24,249 INFO L225 Difference]: With dead ends: 30 [2018-11-18 16:03:24,250 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:03:24,250 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:03:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:03:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-18 16:03:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 16:03:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2018-11-18 16:03:24,255 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2018-11-18 16:03:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:24,256 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-18 16:03:24,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:03:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2018-11-18 16:03:24,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 16:03:24,257 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:24,257 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:24,257 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:24,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:24,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1280495258, now seen corresponding path program 1 times [2018-11-18 16:03:24,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:03:24,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:24,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,259 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:03:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 16:03:24,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:24,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 16:03:24,312 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:03:24,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:03:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:03:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:03:24,313 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2018-11-18 16:03:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:24,409 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2018-11-18 16:03:24,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:03:24,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-18 16:03:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:24,410 INFO L225 Difference]: With dead ends: 36 [2018-11-18 16:03:24,410 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 16:03:24,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:03:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 16:03:24,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-11-18 16:03:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:03:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-11-18 16:03:24,416 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 23 [2018-11-18 16:03:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:24,416 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-11-18 16:03:24,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:03:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-11-18 16:03:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 16:03:24,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:24,417 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:24,417 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:24,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:24,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1668712292, now seen corresponding path program 1 times [2018-11-18 16:03:24,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:03:24,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:24,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,419 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:03:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 16:03:24,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:24,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 16:03:24,493 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:03:24,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:03:24,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:03:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:03:24,494 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 7 states. [2018-11-18 16:03:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:24,583 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-18 16:03:24,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:03:24,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-18 16:03:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:24,584 INFO L225 Difference]: With dead ends: 36 [2018-11-18 16:03:24,584 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:03:24,585 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:03:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:03:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-18 16:03:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 16:03:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-18 16:03:24,589 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 23 [2018-11-18 16:03:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:24,589 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-18 16:03:24,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:03:24,590 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-18 16:03:24,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 16:03:24,590 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:24,590 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:24,590 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:24,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:24,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1139697511, now seen corresponding path program 1 times [2018-11-18 16:03:24,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:03:24,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:24,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,592 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:03:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 16:03:24,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:24,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 16:03:24,633 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:03:24,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:03:24,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:03:24,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:03:24,634 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2018-11-18 16:03:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:24,683 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-18 16:03:24,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:03:24,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-18 16:03:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:24,684 INFO L225 Difference]: With dead ends: 31 [2018-11-18 16:03:24,685 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 16:03:24,685 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:03:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 16:03:24,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-11-18 16:03:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 16:03:24,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-11-18 16:03:24,689 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 24 [2018-11-18 16:03:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:24,689 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-11-18 16:03:24,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:03:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-11-18 16:03:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 16:03:24,690 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:24,690 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:24,691 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:24,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:24,691 INFO L82 PathProgramCache]: Analyzing trace with hash 99153721, now seen corresponding path program 1 times [2018-11-18 16:03:24,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:03:24,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:24,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,692 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:03:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 16:03:24,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:24,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 16:03:24,740 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:03:24,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:03:24,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:03:24,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:03:24,741 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2018-11-18 16:03:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:24,764 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-18 16:03:24,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:03:24,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-18 16:03:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:24,765 INFO L225 Difference]: With dead ends: 34 [2018-11-18 16:03:24,765 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 16:03:24,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:03:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 16:03:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 16:03:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 16:03:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2018-11-18 16:03:24,769 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2018-11-18 16:03:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:24,770 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2018-11-18 16:03:24,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:03:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2018-11-18 16:03:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 16:03:24,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:24,771 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:24,771 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:24,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:24,771 INFO L82 PathProgramCache]: Analyzing trace with hash 10057033, now seen corresponding path program 1 times [2018-11-18 16:03:24,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:03:24,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:24,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:24,772 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:03:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 16:03:24,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:24,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 16:03:24,844 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:03:24,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:03:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:03:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:03:24,845 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 8 states. [2018-11-18 16:03:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:24,889 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2018-11-18 16:03:24,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:03:24,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 16:03:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:24,890 INFO L225 Difference]: With dead ends: 30 [2018-11-18 16:03:24,890 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 16:03:24,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:03:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 16:03:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 16:03:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 16:03:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 16:03:24,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-11-18 16:03:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:24,892 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:03:24,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:03:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:03:24,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 16:03:24,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 16:03:24,939 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 16:03:24,939 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:03:24,939 INFO L425 ceAbstractionStarter]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2018-11-18 16:03:24,939 INFO L425 ceAbstractionStarter]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2018-11-18 16:03:24,940 INFO L421 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (<= |gcd_#in~y2| gcd_~y2) (<= 1 gcd_~y1) (<= |gcd_#in~y1| gcd_~y1) (< gcd_~y1 gcd_~y2)) [2018-11-18 16:03:24,940 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-18 16:03:24,940 INFO L428 ceAbstractionStarter]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2018-11-18 16:03:24,940 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= |gcd_#in~y2| gcd_~y2) (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (<= |gcd_#in~y1| gcd_~y1)) [2018-11-18 16:03:24,940 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2018-11-18 16:03:24,940 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-18 16:03:24,940 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2018-11-18 16:03:24,940 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2018-11-18 16:03:24,940 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:03:24,941 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 16:03:24,941 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:03:24,941 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:03:24,941 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 32) no Hoare annotation was computed. [2018-11-18 16:03:24,941 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2018-11-18 16:03:24,941 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2018-11-18 16:03:24,941 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-11-18 16:03:24,941 INFO L425 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-18 16:03:24,941 INFO L425 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-11-18 16:03:24,941 INFO L421 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~m~0) (<= 1 main_~n~0)) [2018-11-18 16:03:24,942 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2018-11-18 16:03:24,942 INFO L425 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-18 16:03:24,942 INFO L425 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2018-11-18 16:03:24,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:03:24 BoogieIcfgContainer [2018-11-18 16:03:24,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:03:24,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:03:24,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:03:24,945 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:03:24,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:03:23" (3/4) ... [2018-11-18 16:03:24,947 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 16:03:24,952 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 16:03:24,952 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2018-11-18 16:03:24,952 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 16:03:24,955 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 16:03:24,956 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 16:03:24,956 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 16:03:24,987 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ca34f53a-e5a7-4f1f-93cc-eeebbcc3a4e4/bin-2019/utaipan/witness.graphml [2018-11-18 16:03:24,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:03:24,988 INFO L168 Benchmark]: Toolchain (without parser) took 1560.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 959.1 MB in the beginning and 936.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 143.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:24,989 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:03:24,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.03 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:24,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.49 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:24,990 INFO L168 Benchmark]: Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:03:24,990 INFO L168 Benchmark]: RCFGBuilder took 177.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:24,991 INFO L168 Benchmark]: TraceAbstraction took 1165.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 939.5 MB in the end (delta: 157.8 MB). Peak memory consumption was 157.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:24,991 INFO L168 Benchmark]: Witness Printer took 42.89 ms. Allocated memory is still 1.1 GB. Free memory was 939.5 MB in the beginning and 936.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:24,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.03 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.49 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 177.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1165.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 939.5 MB in the end (delta: 157.8 MB). Peak memory consumption was 157.8 MB. Max. memory is 11.5 GB. * Witness Printer took 42.89 ms. Allocated memory is still 1.1 GB. Free memory was 939.5 MB in the beginning and 936.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 142 SDtfs, 85 SDslu, 501 SDs, 0 SdLazy, 291 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 40 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 6726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...