./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 32bit --witnessprinter.graph.data.programhash f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:42:06,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:42:06,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:42:06,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:42:06,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:42:06,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:42:06,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:42:06,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:42:06,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:42:06,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:42:06,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:42:06,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:42:06,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:42:06,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:42:06,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:42:06,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:42:06,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:42:06,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:42:06,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:42:06,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:42:06,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:42:06,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:42:06,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:42:06,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:42:06,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:42:06,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:42:06,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:42:06,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:42:06,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:42:06,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:42:06,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:42:06,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:42:06,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:42:06,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:42:06,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:42:06,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:42:06,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:42:06,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:42:06,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:42:06,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:42:06,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:42:06,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-12-07 14:42:06,957 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:42:06,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:42:06,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:42:06,957 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:42:06,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:42:06,958 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:42:06,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:42:06,958 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:42:06,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:42:06,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:42:06,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:42:06,958 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:42:06,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:42:06,959 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:42:06,959 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:42:06,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:42:06,959 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 14:42:06,960 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:42:06,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:42:06,961 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:42:06,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:42:06,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:42:06,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:42:06,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:42:06,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:42:06,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:42:06,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:42:06,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:42:06,962 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:42:06,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:42:06,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:42:06,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:42:06,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:42:06,963 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_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 [2019-12-07 14:42:07,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:42:07,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:42:07,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:42:07,092 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:42:07,092 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:42:07,093 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/../../sv-benchmarks/c/recursive/recHanoi02-2.c [2019-12-07 14:42:07,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/data/607a1b6c6/9bba766be87841058b93aaf2e42abb66/FLAGcb7dd42b3 [2019-12-07 14:42:07,582 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:42:07,582 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/sv-benchmarks/c/recursive/recHanoi02-2.c [2019-12-07 14:42:07,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/data/607a1b6c6/9bba766be87841058b93aaf2e42abb66/FLAGcb7dd42b3 [2019-12-07 14:42:07,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/data/607a1b6c6/9bba766be87841058b93aaf2e42abb66 [2019-12-07 14:42:07,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:42:07,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:42:07,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:42:07,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:42:07,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:42:07,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffc5a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07, skipping insertion in model container [2019-12-07 14:42:07,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:42:07,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:42:07,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:42:07,714 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:42:07,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:42:07,764 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:42:07,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07 WrapperNode [2019-12-07 14:42:07,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:42:07,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:42:07,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:42:07,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:42:07,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:42:07,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:42:07,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:42:07,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:42:07,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... [2019-12-07 14:42:07,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:42:07,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:42:07,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:42:07,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:42:07,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-12-07 14:42:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-12-07 14:42:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:42:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:42:07,956 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:42:07,957 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 14:42:07,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:42:07 BoogieIcfgContainer [2019-12-07 14:42:07,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:42:07,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:42:07,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:42:07,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:42:07,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:42:07" (1/3) ... [2019-12-07 14:42:07,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558e6848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:42:07, skipping insertion in model container [2019-12-07 14:42:07,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:42:07" (2/3) ... [2019-12-07 14:42:07,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558e6848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:42:07, skipping insertion in model container [2019-12-07 14:42:07,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:42:07" (3/3) ... [2019-12-07 14:42:07,962 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2019-12-07 14:42:07,969 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:42:07,973 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 14:42:07,980 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 14:42:07,994 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:42:07,994 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:42:07,994 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:42:07,994 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:42:07,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:42:07,995 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:42:07,995 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:42:07,995 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:42:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 14:42:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:42:08,009 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:08,010 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:42:08,010 INFO L410 AbstractCegarLoop]: === Iteration 1 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:08,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2019-12-07 14:42:08,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:08,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482448805] [2019-12-07 14:42:08,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:08,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482448805] [2019-12-07 14:42:08,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:42:08,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:42:08,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203395526] [2019-12-07 14:42:08,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:42:08,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:42:08,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:42:08,141 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-12-07 14:42:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:08,195 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-12-07 14:42:08,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:42:08,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 14:42:08,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:08,202 INFO L225 Difference]: With dead ends: 26 [2019-12-07 14:42:08,202 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 14:42:08,204 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:42:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 14:42:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 14:42:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 14:42:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-12-07 14:42:08,230 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2019-12-07 14:42:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:08,230 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-12-07 14:42:08,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:42:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-12-07 14:42:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 14:42:08,231 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:08,231 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:42:08,231 INFO L410 AbstractCegarLoop]: === Iteration 2 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:08,231 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2019-12-07 14:42:08,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:08,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755501529] [2019-12-07 14:42:08,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:08,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755501529] [2019-12-07 14:42:08,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:42:08,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:42:08,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357586563] [2019-12-07 14:42:08,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:42:08,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:08,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:42:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:42:08,256 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-12-07 14:42:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:08,287 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-12-07 14:42:08,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:42:08,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 14:42:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:08,289 INFO L225 Difference]: With dead ends: 39 [2019-12-07 14:42:08,289 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 14:42:08,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:42:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 14:42:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-12-07 14:42:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 14:42:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 14:42:08,296 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2019-12-07 14:42:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:08,297 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 14:42:08,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:42:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 14:42:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 14:42:08,298 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:08,298 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 14:42:08,298 INFO L410 AbstractCegarLoop]: === Iteration 3 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:08,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1144431293, now seen corresponding path program 1 times [2019-12-07 14:42:08,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:08,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180113816] [2019-12-07 14:42:08,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:08,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180113816] [2019-12-07 14:42:08,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106437743] [2019-12-07 14:42:08,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:08,360 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:42:08,363 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:08,380 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:08,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1366945667] [2019-12-07 14:42:08,436 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:42:08,437 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:08,441 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:08,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:08,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2019-12-07 14:42:08,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156221085] [2019-12-07 14:42:08,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 14:42:08,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:08,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 14:42:08,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:42:08,443 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 12 states. [2019-12-07 14:42:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:08,572 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2019-12-07 14:42:08,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 14:42:08,572 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2019-12-07 14:42:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:08,574 INFO L225 Difference]: With dead ends: 91 [2019-12-07 14:42:08,574 INFO L226 Difference]: Without dead ends: 90 [2019-12-07 14:42:08,575 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2019-12-07 14:42:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-12-07 14:42:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2019-12-07 14:42:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 14:42:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2019-12-07 14:42:08,585 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 12 [2019-12-07 14:42:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:08,585 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2019-12-07 14:42:08,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 14:42:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2019-12-07 14:42:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:42:08,586 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:08,586 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:42:08,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:08,787 INFO L410 AbstractCegarLoop]: === Iteration 4 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash -287349001, now seen corresponding path program 1 times [2019-12-07 14:42:08,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:08,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17999293] [2019-12-07 14:42:08,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 14:42:08,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17999293] [2019-12-07 14:42:08,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:42:08,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:42:08,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312763731] [2019-12-07 14:42:08,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:42:08,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:08,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:42:08,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:42:08,809 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 4 states. [2019-12-07 14:42:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:08,834 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2019-12-07 14:42:08,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:42:08,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 14:42:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:08,837 INFO L225 Difference]: With dead ends: 103 [2019-12-07 14:42:08,837 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 14:42:08,838 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:42:08,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 14:42:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-12-07 14:42:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-12-07 14:42:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2019-12-07 14:42:08,849 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 14 [2019-12-07 14:42:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:08,849 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2019-12-07 14:42:08,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:42:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2019-12-07 14:42:08,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 14:42:08,850 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:08,850 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-12-07 14:42:08,850 INFO L410 AbstractCegarLoop]: === Iteration 5 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:08,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:08,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1696558728, now seen corresponding path program 2 times [2019-12-07 14:42:08,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:08,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833536447] [2019-12-07 14:42:08,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:08,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833536447] [2019-12-07 14:42:08,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59890099] [2019-12-07 14:42:08,930 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:08,948 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 14:42:08,949 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:42:08,949 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 14:42:08,951 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:08,957 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:09,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1874754362] [2019-12-07 14:42:09,077 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:42:09,077 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:09,078 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:09,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:09,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2019-12-07 14:42:09,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021467715] [2019-12-07 14:42:09,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 14:42:09,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:09,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 14:42:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2019-12-07 14:42:09,080 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand 24 states. [2019-12-07 14:42:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:09,428 INFO L93 Difference]: Finished difference Result 247 states and 262 transitions. [2019-12-07 14:42:09,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-07 14:42:09,428 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2019-12-07 14:42:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:09,435 INFO L225 Difference]: With dead ends: 247 [2019-12-07 14:42:09,435 INFO L226 Difference]: Without dead ends: 246 [2019-12-07 14:42:09,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=515, Invalid=1207, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 14:42:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2019-12-07 14:42:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 206. [2019-12-07 14:42:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-12-07 14:42:09,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 256 transitions. [2019-12-07 14:42:09,457 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 256 transitions. Word has length 27 [2019-12-07 14:42:09,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:09,457 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 256 transitions. [2019-12-07 14:42:09,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 14:42:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 256 transitions. [2019-12-07 14:42:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 14:42:09,459 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:09,459 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:42:09,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:09,660 INFO L410 AbstractCegarLoop]: === Iteration 6 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:09,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:09,661 INFO L82 PathProgramCache]: Analyzing trace with hash -563967927, now seen corresponding path program 1 times [2019-12-07 14:42:09,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:09,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166828694] [2019-12-07 14:42:09,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:42:09,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166828694] [2019-12-07 14:42:09,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705840479] [2019-12-07 14:42:09,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:09,738 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:42:09,739 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:42:09,752 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:42:09,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570725473] [2019-12-07 14:42:09,809 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 14:42:09,810 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:09,810 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:09,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:09,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2019-12-07 14:42:09,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11781495] [2019-12-07 14:42:09,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 14:42:09,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:09,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 14:42:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:42:09,811 INFO L87 Difference]: Start difference. First operand 206 states and 256 transitions. Second operand 12 states. [2019-12-07 14:42:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:09,852 INFO L93 Difference]: Finished difference Result 399 states and 548 transitions. [2019-12-07 14:42:09,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 14:42:09,852 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2019-12-07 14:42:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:09,855 INFO L225 Difference]: With dead ends: 399 [2019-12-07 14:42:09,855 INFO L226 Difference]: Without dead ends: 397 [2019-12-07 14:42:09,855 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:42:09,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-12-07 14:42:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 376. [2019-12-07 14:42:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2019-12-07 14:42:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 457 transitions. [2019-12-07 14:42:09,873 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 457 transitions. Word has length 26 [2019-12-07 14:42:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:09,874 INFO L462 AbstractCegarLoop]: Abstraction has 376 states and 457 transitions. [2019-12-07 14:42:09,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 14:42:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 457 transitions. [2019-12-07 14:42:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 14:42:09,874 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:09,875 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:42:10,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:10,076 INFO L410 AbstractCegarLoop]: === Iteration 7 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash -303136509, now seen corresponding path program 1 times [2019-12-07 14:42:10,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:10,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213203371] [2019-12-07 14:42:10,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:42:10,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213203371] [2019-12-07 14:42:10,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585233541] [2019-12-07 14:42:10,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:10,153 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:42:10,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:42:10,174 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:42:10,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:42:10,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2019-12-07 14:42:10,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599359021] [2019-12-07 14:42:10,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:42:10,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:10,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:42:10,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:42:10,242 INFO L87 Difference]: Start difference. First operand 376 states and 457 transitions. Second operand 6 states. [2019-12-07 14:42:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:10,265 INFO L93 Difference]: Finished difference Result 376 states and 457 transitions. [2019-12-07 14:42:10,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:42:10,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-12-07 14:42:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:10,268 INFO L225 Difference]: With dead ends: 376 [2019-12-07 14:42:10,268 INFO L226 Difference]: Without dead ends: 332 [2019-12-07 14:42:10,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:42:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2019-12-07 14:42:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2019-12-07 14:42:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2019-12-07 14:42:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 352 transitions. [2019-12-07 14:42:10,279 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 352 transitions. Word has length 27 [2019-12-07 14:42:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:10,279 INFO L462 AbstractCegarLoop]: Abstraction has 332 states and 352 transitions. [2019-12-07 14:42:10,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:42:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 352 transitions. [2019-12-07 14:42:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-07 14:42:10,281 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:10,281 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2019-12-07 14:42:10,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:10,483 INFO L410 AbstractCegarLoop]: === Iteration 8 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:10,483 INFO L82 PathProgramCache]: Analyzing trace with hash -403286744, now seen corresponding path program 3 times [2019-12-07 14:42:10,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:10,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030499740] [2019-12-07 14:42:10,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:10,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030499740] [2019-12-07 14:42:10,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710787595] [2019-12-07 14:42:10,729 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:10,752 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 14:42:10,752 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:42:10,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 14:42:10,755 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:10,767 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:11,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737114669] [2019-12-07 14:42:11,153 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:42:11,153 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:11,154 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:11,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:11,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2019-12-07 14:42:11,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300933782] [2019-12-07 14:42:11,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 14:42:11,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:11,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 14:42:11,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 14:42:11,156 INFO L87 Difference]: Start difference. First operand 332 states and 352 transitions. Second operand 48 states. [2019-12-07 14:42:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:11,967 INFO L93 Difference]: Finished difference Result 799 states and 832 transitions. [2019-12-07 14:42:11,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-12-07 14:42:11,967 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 57 [2019-12-07 14:42:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:11,971 INFO L225 Difference]: With dead ends: 799 [2019-12-07 14:42:11,971 INFO L226 Difference]: Without dead ends: 798 [2019-12-07 14:42:11,974 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2204, Invalid=5278, Unknown=0, NotChecked=0, Total=7482 [2019-12-07 14:42:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-12-07 14:42:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 776. [2019-12-07 14:42:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-12-07 14:42:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 820 transitions. [2019-12-07 14:42:11,997 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 820 transitions. Word has length 57 [2019-12-07 14:42:11,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:11,998 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 820 transitions. [2019-12-07 14:42:11,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 14:42:11,998 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 820 transitions. [2019-12-07 14:42:12,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-07 14:42:12,000 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:12,000 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2019-12-07 14:42:12,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:12,201 INFO L410 AbstractCegarLoop]: === Iteration 9 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash -158018185, now seen corresponding path program 2 times [2019-12-07 14:42:12,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:12,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154613761] [2019-12-07 14:42:12,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-12-07 14:42:12,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154613761] [2019-12-07 14:42:12,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77475154] [2019-12-07 14:42:12,311 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:12,334 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 14:42:12,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:42:12,334 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 14:42:12,336 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-12-07 14:42:12,372 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-12-07 14:42:12,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [292733439] [2019-12-07 14:42:12,756 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 14:42:12,756 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:12,757 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:12,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:12,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2019-12-07 14:42:12,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404092698] [2019-12-07 14:42:12,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 14:42:12,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:12,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 14:42:12,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-12-07 14:42:12,758 INFO L87 Difference]: Start difference. First operand 776 states and 820 transitions. Second operand 24 states. [2019-12-07 14:42:12,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:12,828 INFO L93 Difference]: Finished difference Result 1713 states and 1894 transitions. [2019-12-07 14:42:12,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 14:42:12,828 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 62 [2019-12-07 14:42:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:12,833 INFO L225 Difference]: With dead ends: 1713 [2019-12-07 14:42:12,833 INFO L226 Difference]: Without dead ends: 1415 [2019-12-07 14:42:12,835 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-12-07 14:42:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2019-12-07 14:42:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1415. [2019-12-07 14:42:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2019-12-07 14:42:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1459 transitions. [2019-12-07 14:42:12,862 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1459 transitions. Word has length 62 [2019-12-07 14:42:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:12,862 INFO L462 AbstractCegarLoop]: Abstraction has 1415 states and 1459 transitions. [2019-12-07 14:42:12,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 14:42:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1459 transitions. [2019-12-07 14:42:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-12-07 14:42:12,864 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:12,864 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2019-12-07 14:42:13,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:13,065 INFO L410 AbstractCegarLoop]: === Iteration 10 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:13,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:13,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1799494248, now seen corresponding path program 4 times [2019-12-07 14:42:13,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:13,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572640740] [2019-12-07 14:42:13,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:13,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572640740] [2019-12-07 14:42:13,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058746173] [2019-12-07 14:42:13,698 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/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 [2019-12-07 14:42:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:13,730 INFO L264 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 48 conjunts are in the unsatisfiable core [2019-12-07 14:42:13,735 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:13,768 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:15,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1285114993] [2019-12-07 14:42:15,180 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:42:15,181 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:15,181 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:15,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:15,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2019-12-07 14:42:15,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913020506] [2019-12-07 14:42:15,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 96 states [2019-12-07 14:42:15,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:15,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2019-12-07 14:42:15,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2019-12-07 14:42:15,185 INFO L87 Difference]: Start difference. First operand 1415 states and 1459 transitions. Second operand 96 states. [2019-12-07 14:42:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:17,880 INFO L93 Difference]: Finished difference Result 3358 states and 3427 transitions. [2019-12-07 14:42:17,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-12-07 14:42:17,881 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 117 [2019-12-07 14:42:17,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:17,893 INFO L225 Difference]: With dead ends: 3358 [2019-12-07 14:42:17,893 INFO L226 Difference]: Without dead ends: 3357 [2019-12-07 14:42:17,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9119, Invalid=22033, Unknown=0, NotChecked=0, Total=31152 [2019-12-07 14:42:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2019-12-07 14:42:17,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3311. [2019-12-07 14:42:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2019-12-07 14:42:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 3403 transitions. [2019-12-07 14:42:17,958 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 3403 transitions. Word has length 117 [2019-12-07 14:42:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:17,958 INFO L462 AbstractCegarLoop]: Abstraction has 3311 states and 3403 transitions. [2019-12-07 14:42:17,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 96 states. [2019-12-07 14:42:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 3403 transitions. [2019-12-07 14:42:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-12-07 14:42:17,961 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:17,961 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2019-12-07 14:42:18,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:18,161 INFO L410 AbstractCegarLoop]: === Iteration 11 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:18,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:18,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1176109879, now seen corresponding path program 3 times [2019-12-07 14:42:18,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:18,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292530802] [2019-12-07 14:42:18,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-12-07 14:42:18,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292530802] [2019-12-07 14:42:18,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993938602] [2019-12-07 14:42:18,352 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:18,389 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 14:42:18,389 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:42:18,390 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 14:42:18,393 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-12-07 14:42:18,501 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-12-07 14:42:21,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125772432] [2019-12-07 14:42:21,610 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 14:42:21,610 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:21,610 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:21,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:21,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2019-12-07 14:42:21,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297393136] [2019-12-07 14:42:21,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 14:42:21,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:21,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 14:42:21,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 14:42:21,612 INFO L87 Difference]: Start difference. First operand 3311 states and 3403 transitions. Second operand 48 states. [2019-12-07 14:42:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:21,747 INFO L93 Difference]: Finished difference Result 7200 states and 7855 transitions. [2019-12-07 14:42:21,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-12-07 14:42:21,748 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 134 [2019-12-07 14:42:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:21,762 INFO L225 Difference]: With dead ends: 7200 [2019-12-07 14:42:21,762 INFO L226 Difference]: Without dead ends: 5849 [2019-12-07 14:42:21,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 233 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 14:42:21,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2019-12-07 14:42:21,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5849. [2019-12-07 14:42:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2019-12-07 14:42:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 5941 transitions. [2019-12-07 14:42:21,871 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 5941 transitions. Word has length 134 [2019-12-07 14:42:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:21,871 INFO L462 AbstractCegarLoop]: Abstraction has 5849 states and 5941 transitions. [2019-12-07 14:42:21,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 14:42:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 5941 transitions. [2019-12-07 14:42:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-12-07 14:42:21,876 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:21,876 INFO L410 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2019-12-07 14:42:22,077 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:22,077 INFO L410 AbstractCegarLoop]: === Iteration 12 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:22,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:22,078 INFO L82 PathProgramCache]: Analyzing trace with hash -513178392, now seen corresponding path program 5 times [2019-12-07 14:42:22,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:22,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129148578] [2019-12-07 14:42:22,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:24,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129148578] [2019-12-07 14:42:24,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670776634] [2019-12-07 14:42:24,367 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:24,491 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2019-12-07 14:42:24,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:42:24,494 INFO L264 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 104 conjunts are in the unsatisfiable core [2019-12-07 14:42:24,498 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5203 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-12-07 14:42:24,628 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:42:30,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1261063355] [2019-12-07 14:42:30,592 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:42:30,592 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:42:30,592 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:42:30,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:42:30,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 81, 96] total 192 [2019-12-07 14:42:30,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756414286] [2019-12-07 14:42:30,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 193 states [2019-12-07 14:42:30,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:42:30,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2019-12-07 14:42:30,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9220, Invalid=27836, Unknown=0, NotChecked=0, Total=37056 [2019-12-07 14:42:30,598 INFO L87 Difference]: Start difference. First operand 5849 states and 5941 transitions. Second operand 193 states. [2019-12-07 14:42:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:42:30,651 INFO L93 Difference]: Finished difference Result 5849 states and 5941 transitions. [2019-12-07 14:42:30,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:42:30,652 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 237 [2019-12-07 14:42:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:42:30,664 INFO L225 Difference]: With dead ends: 5849 [2019-12-07 14:42:30,664 INFO L226 Difference]: Without dead ends: 5848 [2019-12-07 14:42:30,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 361 SyntacticMatches, 16 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12747 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=9602, Invalid=28228, Unknown=0, NotChecked=0, Total=37830 [2019-12-07 14:42:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2019-12-07 14:42:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 5848. [2019-12-07 14:42:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2019-12-07 14:42:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 5940 transitions. [2019-12-07 14:42:30,748 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 5940 transitions. Word has length 237 [2019-12-07 14:42:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:42:30,749 INFO L462 AbstractCegarLoop]: Abstraction has 5848 states and 5940 transitions. [2019-12-07 14:42:30,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 193 states. [2019-12-07 14:42:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 5940 transitions. [2019-12-07 14:42:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2019-12-07 14:42:30,760 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:42:30,760 INFO L410 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2019-12-07 14:42:30,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:30,961 INFO L410 AbstractCegarLoop]: === Iteration 13 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:42:30,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:42:30,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1031646903, now seen corresponding path program 4 times [2019-12-07 14:42:30,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:42:30,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755602314] [2019-12-07 14:42:30,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:42:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-12-07 14:42:31,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755602314] [2019-12-07 14:42:31,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688564305] [2019-12-07 14:42:31,576 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:42:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:42:31,672 INFO L264 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 14:42:31,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:42:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-12-07 14:42:32,062 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:35,681 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:42:35,786 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 14:42:35,895 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 14:42:36,013 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 14:42:36,128 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 14:42:36,251 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:42:36,369 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:42:39,511 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-12-07 14:42:39,713 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 14:42:39,819 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 14:42:39,932 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:42:40,046 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:42:40,170 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 14:42:40,310 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 14:42:41,630 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-12-07 14:42:41,732 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-12-07 14:42:43,836 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-12-07 14:42:49,454 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 14:42:49,578 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-12-07 14:42:49,697 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-12-07 14:42:54,513 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-12-07 14:42:54,618 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-12-07 14:43:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-12-07 14:43:04,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1828487792] [2019-12-07 14:43:04,503 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 14:43:04,503 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:43:04,503 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:43:04,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:43:04,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 63 [2019-12-07 14:43:04,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875648345] [2019-12-07 14:43:04,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2019-12-07 14:43:04,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:04,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2019-12-07 14:43:04,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2019-12-07 14:43:04,505 INFO L87 Difference]: Start difference. First operand 5848 states and 5940 transitions. Second operand 64 states. [2019-12-07 14:43:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:04,659 INFO L93 Difference]: Finished difference Result 8441 states and 8908 transitions. [2019-12-07 14:43:04,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-12-07 14:43:04,659 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 278 [2019-12-07 14:43:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:04,675 INFO L225 Difference]: With dead ends: 8441 [2019-12-07 14:43:04,675 INFO L226 Difference]: Without dead ends: 6980 [2019-12-07 14:43:04,678 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 485 SyntacticMatches, 54 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3384 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2019-12-07 14:43:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6980 states. [2019-12-07 14:43:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6980 to 6980. [2019-12-07 14:43:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6980 states. [2019-12-07 14:43:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 7072 transitions. [2019-12-07 14:43:04,750 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 7072 transitions. Word has length 278 [2019-12-07 14:43:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:04,750 INFO L462 AbstractCegarLoop]: Abstraction has 6980 states and 7072 transitions. [2019-12-07 14:43:04,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 64 states. [2019-12-07 14:43:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 7072 transitions. [2019-12-07 14:43:04,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2019-12-07 14:43:04,761 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:04,761 INFO L410 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1] [2019-12-07 14:43:04,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:04,961 INFO L410 AbstractCegarLoop]: === Iteration 14 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:04,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1697805385, now seen corresponding path program 5 times [2019-12-07 14:43:04,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:04,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209180847] [2019-12-07 14:43:04,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3165 proven. 152 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-12-07 14:43:05,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209180847] [2019-12-07 14:43:05,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782621889] [2019-12-07 14:43:05,573 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:06,096 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2019-12-07 14:43:06,096 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:43:06,098 INFO L264 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 66 conjunts are in the unsatisfiable core [2019-12-07 14:43:06,102 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:43:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3165 proven. 152 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-12-07 14:43:06,226 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:43:09,983 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:10,085 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:10,193 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:10,296 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:10,425 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:10,537 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:10,659 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:10,789 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:10,912 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:11,031 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:11,154 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:11,274 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:11,400 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:11,536 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:11,672 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:11,809 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:11,972 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:12,136 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:12,285 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:12,426 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:12,582 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:12,735 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:12,901 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:13,062 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:13,242 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:13,394 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:13,568 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 14:43:13,724 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 14:43:13,889 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 14:43:14,048 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 14:43:14,218 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 14:43:14,383 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 14:43:14,560 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 14:43:14,735 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 14:43:14,916 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 14:43:15,093 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 14:43:15,282 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 14:43:15,464 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 14:43:15,651 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-12-07 14:43:15,839 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2019-12-07 14:43:16,003 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2019-12-07 14:43:16,179 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2019-12-07 14:43:16,338 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-12-07 14:43:16,491 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-12-07 14:43:16,651 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-12-07 14:43:16,798 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-12-07 14:43:16,942 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-12-07 14:43:17,083 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 14:43:17,219 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2019-12-07 14:43:17,353 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 14:43:17,477 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-12-07 14:43:17,598 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 14:43:17,715 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-12-07 14:43:17,825 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-12-07 14:43:17,933 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-12-07 14:43:18,039 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 14:43:18,142 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 14:43:23,485 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:23,587 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:23,697 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:23,805 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:23,919 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:24,030 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:24,148 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:24,262 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:24,381 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:24,510 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:24,632 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:24,753 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:24,876 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:24,997 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:25,126 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:25,254 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:25,391 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:25,528 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:25,669 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:25,808 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:25,968 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:26,121 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:26,275 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:26,423 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:26,576 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:26,726 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:26,884 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 14:43:27,037 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 14:43:27,212 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 14:43:27,378 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 14:43:27,547 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 14:43:27,712 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 14:43:27,884 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 14:43:28,054 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 14:43:28,234 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-12-07 14:43:28,398 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2019-12-07 14:43:28,562 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-12-07 14:43:28,732 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-12-07 14:43:28,884 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-12-07 14:43:29,031 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-12-07 14:43:29,172 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-12-07 14:43:29,308 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 14:43:29,446 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2019-12-07 14:43:29,576 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-12-07 14:43:29,710 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-12-07 14:43:29,834 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 14:43:29,949 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 14:43:30,060 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 14:43:30,167 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 14:43:30,272 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-12-07 14:43:30,373 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-12-07 14:43:36,237 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 14:43:36,820 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:36,921 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:37,029 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:37,135 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:37,245 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:37,354 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:37,469 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:37,580 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:37,698 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:37,813 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:37,942 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:38,080 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:38,246 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:38,400 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:38,559 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:38,713 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:38,881 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:39,064 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:39,217 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:39,371 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:39,555 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:39,748 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:39,978 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:40,237 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:40,518 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:40,703 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:40,860 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 14:43:41,013 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 14:43:41,194 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 14:43:41,362 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 14:43:41,524 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2019-12-07 14:43:41,678 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-12-07 14:43:41,824 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-12-07 14:43:41,965 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-12-07 14:43:42,105 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-12-07 14:43:42,239 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2019-12-07 14:43:42,369 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-12-07 14:43:42,496 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 14:43:42,641 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-12-07 14:43:42,785 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 14:43:42,926 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-12-07 14:43:43,062 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 14:43:43,194 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 14:43:43,323 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 14:43:43,445 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 14:43:43,564 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 14:43:43,677 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 14:43:43,781 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-12-07 14:43:43,884 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2019-12-07 14:43:44,178 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:44,303 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-12-07 14:43:44,428 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:44,546 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-12-07 14:43:44,662 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:43:44,771 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-12-07 14:43:45,425 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-12-07 14:43:49,672 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 14:43:49,775 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 14:43:49,883 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:43:49,996 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:43:50,121 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:50,244 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:43:50,375 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:50,485 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:43:50,595 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:50,701 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:43:50,819 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:50,934 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:43:51,050 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:51,166 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:43:51,289 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:51,407 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:43:51,537 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:51,661 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:43:51,795 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:51,925 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:43:52,059 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:52,193 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:43:52,337 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:52,483 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:43:52,626 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:52,770 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:52,936 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:53,100 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 14:43:53,276 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:53,450 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:43:53,612 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-12-07 14:43:53,755 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-12-07 14:43:53,893 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-12-07 14:43:54,025 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2019-12-07 14:43:54,155 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-12-07 14:43:54,281 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 14:43:54,402 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-12-07 14:43:54,521 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-12-07 14:43:54,639 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-12-07 14:43:54,751 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 14:43:54,858 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-12-07 14:43:54,963 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 14:43:55,066 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 14:43:55,274 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-12-07 14:43:55,397 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:43:55,500 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-12-07 14:43:59,035 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-12-07 14:43:59,138 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-12-07 14:43:59,249 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-12-07 14:43:59,359 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-12-07 14:43:59,475 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 14:43:59,587 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 14:43:59,703 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-12-07 14:43:59,818 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-12-07 14:43:59,959 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-12-07 14:44:00,103 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-12-07 14:44:00,254 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 14:44:00,487 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 14:44:00,670 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 14:44:01,516 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:44:01,638 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:01,761 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:01,925 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:02,158 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:02,304 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:02,419 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:02,539 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:02,651 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:02,773 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:02,890 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:03,018 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:44:03,147 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:44:03,307 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:44:03,479 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:44:03,689 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:44:03,902 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:44:04,119 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:44:04,301 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:44:04,502 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:44:04,714 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 14:44:04,937 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:44:05,160 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 14:44:05,394 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-12-07 14:44:05,620 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-12-07 14:44:05,751 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-12-07 14:44:05,875 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-12-07 14:44:05,998 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-12-07 14:44:06,115 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-12-07 14:44:06,231 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-12-07 14:44:06,340 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 14:44:06,443 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 14:44:06,544 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 14:44:06,655 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 14:44:06,764 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-12-07 14:44:06,869 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 14:44:07,518 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-12-07 14:44:07,649 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:07,805 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-12-07 14:44:07,966 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-12-07 14:44:08,127 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-07 14:44:08,301 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-12-07 14:44:08,450 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-12-07 14:44:08,586 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-12-07 14:44:08,749 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-12-07 14:44:08,897 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-12-07 14:44:09,046 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-12-07 14:44:09,226 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-12-07 14:44:13,320 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:13,422 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:13,529 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:13,632 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:13,743 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:13,849 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:13,975 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:14,107 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:14,237 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:14,366 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:14,504 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:44:14,643 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:44:14,772 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:44:14,897 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:44:15,035 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:44:15,176 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 14:44:15,337 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:44:15,508 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 14:44:15,647 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 14:44:15,771 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2019-12-07 14:44:15,905 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-12-07 14:44:16,023 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-12-07 14:44:16,138 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-12-07 14:44:16,246 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-12-07 14:44:16,354 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-12-07 14:44:16,461 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 14:44:16,562 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 14:44:20,243 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 14:44:20,351 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 14:44:20,703 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-12-07 14:44:23,413 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:23,518 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:23,634 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:23,743 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:23,861 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:23,975 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:24,094 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:24,209 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:24,331 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:44:24,451 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 14:44:24,582 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:44:24,708 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 14:44:24,834 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-12-07 14:44:24,951 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-12-07 14:44:25,066 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-12-07 14:44:25,181 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-12-07 14:44:25,320 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-12-07 14:44:25,464 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 14:44:25,581 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 14:44:29,505 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-12-07 14:44:29,618 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 14:44:29,730 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 14:44:30,319 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 14:44:30,422 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 14:44:30,542 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 14:44:31,208 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:44:31,330 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:31,455 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:31,582 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:31,695 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:31,809 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:31,920 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:32,049 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:32,173 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:32,301 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:32,428 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 14:44:32,549 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 14:44:32,656 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 14:44:32,761 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 14:44:32,862 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 14:44:32,967 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-12-07 14:44:36,291 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-12-07 14:44:36,398 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-12-07 14:44:36,507 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-12-07 14:44:36,616 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-12-07 14:44:36,733 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-07 14:44:36,850 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-07 14:44:36,979 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-12-07 14:44:37,118 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-12-07 14:44:37,273 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-12-07 14:44:37,421 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-12-07 14:44:38,890 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:44:39,010 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:44:39,160 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:39,272 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:39,382 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:39,485 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 14:44:39,599 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:39,707 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 14:44:39,817 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 14:44:39,922 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-12-07 14:44:45,379 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 14:44:45,504 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:45,630 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 14:44:45,742 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 14:44:46,541 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 14:44:46,647 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-12-07 14:44:50,399 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 14:44:50,501 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 14:44:50,605 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 14:44:55,592 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 14:44:55,710 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 14:44:55,825 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 14:45:09,925 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-12-07 14:45:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3165 proven. 1922 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2019-12-07 14:45:24,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [731887079] [2019-12-07 14:45:24,092 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 14:45:24,092 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:45:24,092 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 14:45:24,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:45:24,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 67] total 68 [2019-12-07 14:45:24,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502280539] [2019-12-07 14:45:24,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-12-07 14:45:24,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:45:24,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-12-07 14:45:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1125, Invalid=3431, Unknown=0, NotChecked=0, Total=4556 [2019-12-07 14:45:24,094 INFO L87 Difference]: Start difference. First operand 6980 states and 7072 transitions. Second operand 68 states. [2019-12-07 14:45:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:45:24,619 INFO L93 Difference]: Finished difference Result 7210 states and 7303 transitions. [2019-12-07 14:45:24,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-12-07 14:45:24,619 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 374 [2019-12-07 14:45:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:45:24,620 INFO L225 Difference]: With dead ends: 7210 [2019-12-07 14:45:24,620 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:45:24,628 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 682 SyntacticMatches, 65 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2790 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3269, Invalid=6631, Unknown=0, NotChecked=0, Total=9900 [2019-12-07 14:45:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:45:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:45:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:45:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:45:24,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 374 [2019-12-07 14:45:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:45:24,629 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:45:24,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-12-07 14:45:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:45:24,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:45:24,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:45:24,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 14:45:25,281 WARN L192 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 14 [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L242 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (or (not (<= 1 |hanoi_#in~n|)) (and (<= hanoi_~n |hanoi_#in~n|) (<= 1 hanoi_~n) (not (= 1 hanoi_~n))) (not (<= |hanoi_#in~n| 31))) [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L22-6(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point L22-7(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,284 INFO L246 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L249 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L242 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 31)) [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L246 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-12-07 14:45:25,285 INFO L249 CegarLoopResult]: At program point L26(lines 26 37) the Hoare annotation is: true [2019-12-07 14:45:25,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:45:25 BoogieIcfgContainer [2019-12-07 14:45:25,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:45:25,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:45:25,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:45:25,291 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:45:25,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:42:07" (3/4) ... [2019-12-07 14:45:25,294 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:45:25,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2019-12-07 14:45:25,300 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 14:45:25,300 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 14:45:25,334 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_06ff67eb-7655-4642-9f6e-39fb0d7322e1/bin/utaipan/witness.graphml [2019-12-07 14:45:25,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:45:25,335 INFO L168 Benchmark]: Toolchain (without parser) took 197738.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 943.4 MB in the beginning and 955.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:25,335 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:45:25,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:25,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.32 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. [2019-12-07 14:45:25,336 INFO L168 Benchmark]: Boogie Preprocessor took 10.28 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:25,336 INFO L168 Benchmark]: RCFGBuilder took 162.38 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:25,337 INFO L168 Benchmark]: TraceAbstraction took 197332.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 38.8 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 111.7 MB). Peak memory consumption was 395.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:25,337 INFO L168 Benchmark]: Witness Printer took 43.15 ms. Allocated memory is still 1.2 GB. Free memory was 964.3 MB in the beginning and 955.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:25,338 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.32 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 10.28 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.38 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 197332.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 38.8 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 111.7 MB). Peak memory consumption was 395.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.15 ms. Allocated memory is still 1.2 GB. Free memory was 964.3 MB in the beginning and 955.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 6 error locations. Result: SAFE, OverallTime: 196.8s, OverallIterations: 14, TraceHistogramMax: 47, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 456 SDtfs, 6766 SDslu, 3031 SDs, 0 SdLazy, 2784 SolverSat, 1480 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3216 GetRequests, 2297 SyntacticMatches, 151 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29119 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6980occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 159 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 98 PreInvPairs, 99 NumberOfFragments, 29 HoareAnnotationTreeSize, 98 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 2546 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 187.2s InterpolantComputationTime, 2729 NumberOfCodeBlocks, 2724 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 4044 ConstructedInterpolants, 0 QuantifiedInterpolants, 3108710 SizeOfPredicates, 127 NumberOfNonLiveVariables, 2382 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 36 InterpolantComputations, 4 PerfectInterpolantSequences, 19651/48848 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...