./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi03-2.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_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 887ada769b510ae5d273618525924110908f2b5f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:26:35,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:26:35,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:26:35,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:26:35,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:26:35,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:26:35,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:26:35,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:26:35,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:26:35,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:26:35,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:26:35,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:26:35,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:26:35,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:26:35,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:26:35,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:26:35,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:26:35,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:26:35,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:26:35,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:26:35,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:26:35,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:26:35,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:26:35,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:26:35,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:26:35,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:26:35,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:26:35,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:26:35,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:26:35,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:26:35,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:26:35,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:26:35,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:26:35,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:26:35,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:26:35,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:26:35,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:26:35,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:26:35,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:26:35,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:26:35,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:26:35,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-12-07 11:26:35,953 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:26:35,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:26:35,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:26:35,953 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:26:35,954 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:26:35,954 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:26:35,954 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:26:35,954 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:26:35,954 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:26:35,954 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:26:35,954 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:26:35,954 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:26:35,955 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:26:35,955 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:26:35,955 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:26:35,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:26:35,955 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:26:35,955 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:26:35,956 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:26:35,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:26:35,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:26:35,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:26:35,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:26:35,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:26:35,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:26:35,958 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_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 -> 887ada769b510ae5d273618525924110908f2b5f [2019-12-07 11:26:36,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:26:36,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:26:36,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:26:36,072 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:26:36,072 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:26:36,073 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2019-12-07 11:26:36,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/data/31e014f41/0fc885bfac0244e9bd87ed32c018a423/FLAGd610101ae [2019-12-07 11:26:36,528 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:26:36,528 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/sv-benchmarks/c/recursive/recHanoi03-2.c [2019-12-07 11:26:36,532 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/data/31e014f41/0fc885bfac0244e9bd87ed32c018a423/FLAGd610101ae [2019-12-07 11:26:36,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/data/31e014f41/0fc885bfac0244e9bd87ed32c018a423 [2019-12-07 11:26:36,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:26:36,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:26:36,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:26:36,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:26:36,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:26:36,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,549 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 11:26:36, skipping insertion in model container [2019-12-07 11:26:36,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:26:36,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:26:36,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:26:36,662 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:26:36,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:26:36,712 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:26:36,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36 WrapperNode [2019-12-07 11:26:36,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:26:36,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:26:36,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:26:36,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:26:36,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:26:36,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:26:36,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:26:36,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:26:36,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... [2019-12-07 11:26:36,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:26:36,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:26:36,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:26:36,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:26:36,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-12-07 11:26:36,782 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-12-07 11:26:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:26:36,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:26:36,910 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:26:36,910 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 11:26:36,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:26:36 BoogieIcfgContainer [2019-12-07 11:26:36,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:26:36,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:26:36,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:26:36,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:26:36,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:26:36" (1/3) ... [2019-12-07 11:26:36,914 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 11:26:36, skipping insertion in model container [2019-12-07 11:26:36,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:26:36" (2/3) ... [2019-12-07 11:26:36,915 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 11:26:36, skipping insertion in model container [2019-12-07 11:26:36,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:26:36" (3/3) ... [2019-12-07 11:26:36,916 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2019-12-07 11:26:36,925 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:26:36,930 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 11:26:36,940 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 11:26:36,954 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:26:36,954 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:26:36,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:26:36,954 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:26:36,954 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:26:36,954 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:26:36,954 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:26:36,955 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:26:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 11:26:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 11:26:36,969 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:36,971 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 11:26:36,971 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 11:26:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:36,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2019-12-07 11:26:36,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:36,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482448805] [2019-12-07 11:26:36,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:37,087 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 11:26:37,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482448805] [2019-12-07 11:26:37,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:26:37,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:26:37,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982800387] [2019-12-07 11:26:37,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:26:37,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:37,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:26:37,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:26:37,102 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-12-07 11:26:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:37,156 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-12-07 11:26:37,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:26:37,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 11:26:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:37,163 INFO L225 Difference]: With dead ends: 26 [2019-12-07 11:26:37,163 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 11:26:37,165 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 11:26:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 11:26:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 11:26:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 11:26:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-12-07 11:26:37,190 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2019-12-07 11:26:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:37,191 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-12-07 11:26:37,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:26:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-12-07 11:26:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 11:26:37,191 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:37,191 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:26:37,191 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 11:26:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2019-12-07 11:26:37,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:37,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248647706] [2019-12-07 11:26:37,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:37,213 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 11:26:37,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248647706] [2019-12-07 11:26:37,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:26:37,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:26:37,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813157963] [2019-12-07 11:26:37,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:26:37,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:37,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:26:37,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:26:37,215 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-12-07 11:26:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:37,248 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-12-07 11:26:37,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:26:37,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 11:26:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:37,250 INFO L225 Difference]: With dead ends: 39 [2019-12-07 11:26:37,250 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 11:26:37,251 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 11:26:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 11:26:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-12-07 11:26:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 11:26:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 11:26:37,257 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2019-12-07 11:26:37,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:37,258 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 11:26:37,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:26:37,258 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 11:26:37,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 11:26:37,259 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:37,259 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 11:26:37,259 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 11:26:37,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:37,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1144431293, now seen corresponding path program 1 times [2019-12-07 11:26:37,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:37,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404138572] [2019-12-07 11:26:37,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:37,297 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 11:26:37,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404138572] [2019-12-07 11:26:37,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505258299] [2019-12-07 11:26:37,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:37,319 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:26:37,322 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:37,339 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 11:26:37,339 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:37,385 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 11:26:37,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939092239] [2019-12-07 11:26:37,400 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 11:26:37,400 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:37,404 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 11:26:37,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:37,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2019-12-07 11:26:37,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987913366] [2019-12-07 11:26:37,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 11:26:37,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:37,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 11:26:37,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-12-07 11:26:37,407 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 12 states. [2019-12-07 11:26:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:37,539 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2019-12-07 11:26:37,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 11:26:37,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2019-12-07 11:26:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:37,542 INFO L225 Difference]: With dead ends: 91 [2019-12-07 11:26:37,542 INFO L226 Difference]: Without dead ends: 90 [2019-12-07 11:26:37,543 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2019-12-07 11:26:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-12-07 11:26:37,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2019-12-07 11:26:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 11:26:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2019-12-07 11:26:37,557 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 12 [2019-12-07 11:26:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:37,557 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2019-12-07 11:26:37,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 11:26:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2019-12-07 11:26:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 11:26:37,558 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:37,558 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:26:37,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:37,759 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 11:26:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:37,759 INFO L82 PathProgramCache]: Analyzing trace with hash -287349001, now seen corresponding path program 1 times [2019-12-07 11:26:37,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:37,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666999871] [2019-12-07 11:26:37,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:37,788 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 11:26:37,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666999871] [2019-12-07 11:26:37,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:26:37,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:26:37,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066293532] [2019-12-07 11:26:37,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:26:37,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:37,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:26:37,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:26:37,790 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 4 states. [2019-12-07 11:26:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:37,817 INFO L93 Difference]: Finished difference Result 101 states and 139 transitions. [2019-12-07 11:26:37,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:26:37,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 11:26:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:37,820 INFO L225 Difference]: With dead ends: 101 [2019-12-07 11:26:37,820 INFO L226 Difference]: Without dead ends: 99 [2019-12-07 11:26:37,821 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 11:26:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-12-07 11:26:37,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2019-12-07 11:26:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-07 11:26:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2019-12-07 11:26:37,832 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 14 [2019-12-07 11:26:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:37,832 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2019-12-07 11:26:37,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:26:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2019-12-07 11:26:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 11:26:37,832 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:37,832 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:26:37,833 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 11:26:37,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:37,833 INFO L82 PathProgramCache]: Analyzing trace with hash -317884395, now seen corresponding path program 1 times [2019-12-07 11:26:37,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:37,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022513099] [2019-12-07 11:26:37,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:37,851 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 11:26:37,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022513099] [2019-12-07 11:26:37,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:26:37,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:26:37,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126110793] [2019-12-07 11:26:37,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:26:37,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:37,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:26:37,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:26:37,852 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 4 states. [2019-12-07 11:26:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:37,864 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2019-12-07 11:26:37,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:26:37,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 11:26:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:37,865 INFO L225 Difference]: With dead ends: 94 [2019-12-07 11:26:37,866 INFO L226 Difference]: Without dead ends: 85 [2019-12-07 11:26:37,866 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 11:26:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-12-07 11:26:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-12-07 11:26:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-12-07 11:26:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2019-12-07 11:26:37,873 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 15 [2019-12-07 11:26:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:37,873 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2019-12-07 11:26:37,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:26:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2019-12-07 11:26:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 11:26:37,874 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:37,874 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-12-07 11:26:37,874 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 11:26:37,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:37,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1696558728, now seen corresponding path program 2 times [2019-12-07 11:26:37,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:37,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257791068] [2019-12-07 11:26:37,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:37,955 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 11:26:37,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257791068] [2019-12-07 11:26:37,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939398050] [2019-12-07 11:26:37,956 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:37,976 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 11:26:37,976 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:26:37,977 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 11:26:37,978 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:37,985 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 11:26:37,985 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:38,110 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 11:26:38,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1323025730] [2019-12-07 11:26:38,112 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 11:26:38,112 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:38,112 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 11:26:38,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:38,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2019-12-07 11:26:38,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387516330] [2019-12-07 11:26:38,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 11:26:38,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:38,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 11:26:38,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2019-12-07 11:26:38,114 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 24 states. [2019-12-07 11:26:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:38,464 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2019-12-07 11:26:38,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-07 11:26:38,465 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2019-12-07 11:26:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:38,467 INFO L225 Difference]: With dead ends: 214 [2019-12-07 11:26:38,467 INFO L226 Difference]: Without dead ends: 213 [2019-12-07 11:26:38,469 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 11:26:38,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-12-07 11:26:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 193. [2019-12-07 11:26:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-12-07 11:26:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 223 transitions. [2019-12-07 11:26:38,486 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 223 transitions. Word has length 27 [2019-12-07 11:26:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:38,487 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 223 transitions. [2019-12-07 11:26:38,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 11:26:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 223 transitions. [2019-12-07 11:26:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 11:26:38,488 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:38,488 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 11:26:38,689 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:38,689 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 11:26:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:38,690 INFO L82 PathProgramCache]: Analyzing trace with hash -563967927, now seen corresponding path program 1 times [2019-12-07 11:26:38,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:38,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796300258] [2019-12-07 11:26:38,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:38,755 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 11:26:38,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796300258] [2019-12-07 11:26:38,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908651600] [2019-12-07 11:26:38,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:38,772 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:26:38,773 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:38,781 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 11:26:38,781 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:38,838 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 11:26:38,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [714901936] [2019-12-07 11:26:38,839 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 11:26:38,839 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:38,840 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 11:26:38,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:38,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2019-12-07 11:26:38,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143286047] [2019-12-07 11:26:38,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 11:26:38,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:38,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 11:26:38,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 11:26:38,841 INFO L87 Difference]: Start difference. First operand 193 states and 223 transitions. Second operand 10 states. [2019-12-07 11:26:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:38,874 INFO L93 Difference]: Finished difference Result 394 states and 479 transitions. [2019-12-07 11:26:38,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 11:26:38,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2019-12-07 11:26:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:38,877 INFO L225 Difference]: With dead ends: 394 [2019-12-07 11:26:38,877 INFO L226 Difference]: Without dead ends: 332 [2019-12-07 11:26:38,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 11:26:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2019-12-07 11:26:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2019-12-07 11:26:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2019-12-07 11:26:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 352 transitions. [2019-12-07 11:26:38,897 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 352 transitions. Word has length 26 [2019-12-07 11:26:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:38,898 INFO L462 AbstractCegarLoop]: Abstraction has 332 states and 352 transitions. [2019-12-07 11:26:38,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 11:26:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 352 transitions. [2019-12-07 11:26:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-07 11:26:38,900 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:38,900 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2019-12-07 11:26:39,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:39,102 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 11:26:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:39,103 INFO L82 PathProgramCache]: Analyzing trace with hash -403286744, now seen corresponding path program 3 times [2019-12-07 11:26:39,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:39,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479034320] [2019-12-07 11:26:39,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:39,332 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 11:26:39,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479034320] [2019-12-07 11:26:39,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505535641] [2019-12-07 11:26:39,332 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:39,354 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:26:39,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:26:39,355 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 11:26:39,357 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:39,369 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 11:26:39,369 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:39,758 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 11:26:39,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [395946094] [2019-12-07 11:26:39,759 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 11:26:39,759 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:39,759 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 11:26:39,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:39,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2019-12-07 11:26:39,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457961794] [2019-12-07 11:26:39,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 11:26:39,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 11:26:39,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 11:26:39,762 INFO L87 Difference]: Start difference. First operand 332 states and 352 transitions. Second operand 48 states. [2019-12-07 11:26:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:40,620 INFO L93 Difference]: Finished difference Result 799 states and 832 transitions. [2019-12-07 11:26:40,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-12-07 11:26:40,620 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 57 [2019-12-07 11:26:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:40,625 INFO L225 Difference]: With dead ends: 799 [2019-12-07 11:26:40,625 INFO L226 Difference]: Without dead ends: 798 [2019-12-07 11:26:40,628 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 11:26:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-12-07 11:26:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 776. [2019-12-07 11:26:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-12-07 11:26:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 820 transitions. [2019-12-07 11:26:40,654 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 820 transitions. Word has length 57 [2019-12-07 11:26:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:40,654 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 820 transitions. [2019-12-07 11:26:40,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 11:26:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 820 transitions. [2019-12-07 11:26:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-07 11:26:40,658 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:40,658 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 11:26:40,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:40,859 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 11:26:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -158018185, now seen corresponding path program 2 times [2019-12-07 11:26:40,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:40,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618123609] [2019-12-07 11:26:40,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:40,960 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 11:26:40,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618123609] [2019-12-07 11:26:40,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544185316] [2019-12-07 11:26:40,960 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:40,982 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 11:26:40,983 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:26:40,983 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 11:26:40,985 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:41,013 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 11:26:41,013 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:41,402 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 11:26:41,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [87772795] [2019-12-07 11:26:41,403 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 11:26:41,403 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:41,403 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 11:26:41,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:41,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2019-12-07 11:26:41,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108263468] [2019-12-07 11:26:41,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 11:26:41,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:41,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 11:26:41,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-12-07 11:26:41,405 INFO L87 Difference]: Start difference. First operand 776 states and 820 transitions. Second operand 22 states. [2019-12-07 11:26:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:41,470 INFO L93 Difference]: Finished difference Result 1713 states and 1894 transitions. [2019-12-07 11:26:41,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 11:26:41,471 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2019-12-07 11:26:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:41,477 INFO L225 Difference]: With dead ends: 1713 [2019-12-07 11:26:41,478 INFO L226 Difference]: Without dead ends: 1415 [2019-12-07 11:26:41,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-12-07 11:26:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2019-12-07 11:26:41,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1415. [2019-12-07 11:26:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2019-12-07 11:26:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1459 transitions. [2019-12-07 11:26:41,520 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1459 transitions. Word has length 62 [2019-12-07 11:26:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:41,520 INFO L462 AbstractCegarLoop]: Abstraction has 1415 states and 1459 transitions. [2019-12-07 11:26:41,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 11:26:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1459 transitions. [2019-12-07 11:26:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-12-07 11:26:41,525 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:41,525 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2019-12-07 11:26:41,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:41,726 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 11:26:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:41,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1799494248, now seen corresponding path program 4 times [2019-12-07 11:26:41,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:41,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921193354] [2019-12-07 11:26:41,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:42,370 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 11:26:42,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921193354] [2019-12-07 11:26:42,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931235607] [2019-12-07 11:26:42,371 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:42,404 INFO L264 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 48 conjunts are in the unsatisfiable core [2019-12-07 11:26:42,409 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:42,453 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 11:26:42,453 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:43,811 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 11:26:43,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1207729831] [2019-12-07 11:26:43,812 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 11:26:43,812 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:43,813 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 11:26:43,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:43,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2019-12-07 11:26:43,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001944213] [2019-12-07 11:26:43,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 96 states [2019-12-07 11:26:43,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:43,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2019-12-07 11:26:43,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2019-12-07 11:26:43,816 INFO L87 Difference]: Start difference. First operand 1415 states and 1459 transitions. Second operand 96 states. [2019-12-07 11:26:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:46,562 INFO L93 Difference]: Finished difference Result 3358 states and 3427 transitions. [2019-12-07 11:26:46,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-12-07 11:26:46,562 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 117 [2019-12-07 11:26:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:46,572 INFO L225 Difference]: With dead ends: 3358 [2019-12-07 11:26:46,572 INFO L226 Difference]: Without dead ends: 3357 [2019-12-07 11:26:46,580 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 11:26:46,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2019-12-07 11:26:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3311. [2019-12-07 11:26:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2019-12-07 11:26:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 3403 transitions. [2019-12-07 11:26:46,632 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 3403 transitions. Word has length 117 [2019-12-07 11:26:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:46,632 INFO L462 AbstractCegarLoop]: Abstraction has 3311 states and 3403 transitions. [2019-12-07 11:26:46,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 96 states. [2019-12-07 11:26:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 3403 transitions. [2019-12-07 11:26:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-12-07 11:26:46,635 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:46,635 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 11:26:46,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:46,836 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 11:26:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1176109879, now seen corresponding path program 3 times [2019-12-07 11:26:46,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:46,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609046325] [2019-12-07 11:26:46,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:47,019 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 11:26:47,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609046325] [2019-12-07 11:26:47,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977331436] [2019-12-07 11:26:47,020 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:47,052 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:26:47,053 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:26:47,053 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 11:26:47,056 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:47,153 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 11:26:47,153 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:50,287 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 11:26:50,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1098996505] [2019-12-07 11:26:50,288 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 11:26:50,288 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:50,288 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 11:26:50,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:50,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2019-12-07 11:26:50,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451241322] [2019-12-07 11:26:50,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-12-07 11:26:50,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:50,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-12-07 11:26:50,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-12-07 11:26:50,290 INFO L87 Difference]: Start difference. First operand 3311 states and 3403 transitions. Second operand 46 states. [2019-12-07 11:26:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:50,426 INFO L93 Difference]: Finished difference Result 7200 states and 7855 transitions. [2019-12-07 11:26:50,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-12-07 11:26:50,426 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 134 [2019-12-07 11:26:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:50,440 INFO L225 Difference]: With dead ends: 7200 [2019-12-07 11:26:50,440 INFO L226 Difference]: Without dead ends: 5849 [2019-12-07 11:26:50,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 235 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-12-07 11:26:50,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2019-12-07 11:26:50,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5849. [2019-12-07 11:26:50,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2019-12-07 11:26:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 5941 transitions. [2019-12-07 11:26:50,557 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 5941 transitions. Word has length 134 [2019-12-07 11:26:50,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:50,557 INFO L462 AbstractCegarLoop]: Abstraction has 5849 states and 5941 transitions. [2019-12-07 11:26:50,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-12-07 11:26:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 5941 transitions. [2019-12-07 11:26:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-12-07 11:26:50,564 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:50,564 INFO L410 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2019-12-07 11:26:50,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:50,765 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 11:26:50,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:50,765 INFO L82 PathProgramCache]: Analyzing trace with hash -513178392, now seen corresponding path program 5 times [2019-12-07 11:26:50,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:50,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483449002] [2019-12-07 11:26:50,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:26:53,038 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 11:26:53,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483449002] [2019-12-07 11:26:53,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389228133] [2019-12-07 11:26:53,038 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:26:53,159 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2019-12-07 11:26:53,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:26:53,161 INFO L264 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 104 conjunts are in the unsatisfiable core [2019-12-07 11:26:53,165 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:26:53,305 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 11:26:53,305 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:26:59,256 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 11:26:59,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [914553526] [2019-12-07 11:26:59,257 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 11:26:59,257 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:26:59,258 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 11:26:59,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:26:59,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 81, 96] total 192 [2019-12-07 11:26:59,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287688294] [2019-12-07 11:26:59,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 193 states [2019-12-07 11:26:59,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:26:59,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2019-12-07 11:26:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9220, Invalid=27836, Unknown=0, NotChecked=0, Total=37056 [2019-12-07 11:26:59,263 INFO L87 Difference]: Start difference. First operand 5849 states and 5941 transitions. Second operand 193 states. [2019-12-07 11:26:59,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:26:59,320 INFO L93 Difference]: Finished difference Result 5849 states and 5941 transitions. [2019-12-07 11:26:59,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:26:59,321 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 237 [2019-12-07 11:26:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:26:59,333 INFO L225 Difference]: With dead ends: 5849 [2019-12-07 11:26:59,334 INFO L226 Difference]: Without dead ends: 5848 [2019-12-07 11:26:59,337 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 11:26:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2019-12-07 11:26:59,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 5848. [2019-12-07 11:26:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2019-12-07 11:26:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 5940 transitions. [2019-12-07 11:26:59,418 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 5940 transitions. Word has length 237 [2019-12-07 11:26:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:26:59,418 INFO L462 AbstractCegarLoop]: Abstraction has 5848 states and 5940 transitions. [2019-12-07 11:26:59,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 193 states. [2019-12-07 11:26:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 5940 transitions. [2019-12-07 11:26:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2019-12-07 11:26:59,425 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:26:59,425 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 11:26:59,626 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:26:59,626 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 11:26:59,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:26:59,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1031646903, now seen corresponding path program 4 times [2019-12-07 11:26:59,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:26:59,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688571993] [2019-12-07 11:26:59,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:26:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:00,258 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 11:27:00,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688571993] [2019-12-07 11:27:00,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784455194] [2019-12-07 11:27:00,259 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:27:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:00,343 INFO L264 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 11:27:00,346 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:27:00,721 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 11:27:00,722 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:27:04,419 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 11:27:04,526 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 11:27:04,660 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 11:27:04,768 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 11:27:04,877 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:27:04,985 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:27:07,659 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-12-07 11:27:07,767 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-12-07 11:27:08,327 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-12-07 11:27:08,626 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:27:08,743 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:27:08,870 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 11:27:08,994 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 11:27:10,828 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-12-07 11:27:10,939 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-12-07 11:27:15,519 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-12-07 11:27:15,666 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-12-07 11:27:15,814 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-12-07 11:27:15,951 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-12-07 11:27:33,738 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 11:27:33,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [561071252] [2019-12-07 11:27:33,739 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 11:27:33,739 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:27:33,739 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 11:27:33,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:27:33,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 61 [2019-12-07 11:27:33,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618607101] [2019-12-07 11:27:33,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-12-07 11:27:33,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:27:33,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-12-07 11:27:33,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2019-12-07 11:27:33,742 INFO L87 Difference]: Start difference. First operand 5848 states and 5940 transitions. Second operand 62 states. [2019-12-07 11:27:33,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:27:33,912 INFO L93 Difference]: Finished difference Result 8441 states and 8908 transitions. [2019-12-07 11:27:33,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-12-07 11:27:33,912 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 278 [2019-12-07 11:27:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:27:33,934 INFO L225 Difference]: With dead ends: 8441 [2019-12-07 11:27:33,935 INFO L226 Difference]: Without dead ends: 6980 [2019-12-07 11:27:33,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 487 SyntacticMatches, 54 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2984 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2019-12-07 11:27:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6980 states. [2019-12-07 11:27:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6980 to 6980. [2019-12-07 11:27:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6980 states. [2019-12-07 11:27:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 7072 transitions. [2019-12-07 11:27:34,032 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 7072 transitions. Word has length 278 [2019-12-07 11:27:34,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:27:34,033 INFO L462 AbstractCegarLoop]: Abstraction has 6980 states and 7072 transitions. [2019-12-07 11:27:34,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 62 states. [2019-12-07 11:27:34,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 7072 transitions. [2019-12-07 11:27:34,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2019-12-07 11:27:34,043 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:27:34,043 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 11:27:34,243 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:27:34,243 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 11:27:34,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:27:34,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1697805385, now seen corresponding path program 5 times [2019-12-07 11:27:34,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:27:34,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567361089] [2019-12-07 11:27:34,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:27:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:27:34,859 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 11:27:34,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567361089] [2019-12-07 11:27:34,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740159167] [2019-12-07 11:27:34,859 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/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 11:27:35,341 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2019-12-07 11:27:35,341 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:27:35,343 INFO L264 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 66 conjunts are in the unsatisfiable core [2019-12-07 11:27:35,347 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:27:35,483 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 11:27:35,483 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:27:39,184 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:27:39,313 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:27:39,440 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:27:39,579 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:27:39,690 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:27:39,807 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:27:39,926 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:27:40,048 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:27:40,175 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:27:40,305 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:27:40,438 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:27:40,567 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:27:40,694 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:27:40,826 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:27:40,954 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:27:41,089 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:27:41,223 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:27:41,364 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:27:41,500 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:27:41,651 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:27:41,807 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:27:41,968 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:27:42,119 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:27:42,276 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:27:42,444 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:27:42,599 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 11:27:42,754 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 11:27:42,916 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:27:43,075 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:27:43,248 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 11:27:43,418 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 11:27:43,597 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 11:27:43,785 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 11:27:44,003 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 11:27:44,182 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 11:27:44,365 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 11:27:44,547 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 11:27:44,733 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-12-07 11:27:44,907 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2019-12-07 11:27:45,083 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-12-07 11:27:45,250 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2019-12-07 11:27:45,422 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-12-07 11:27:45,580 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-12-07 11:27:45,732 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-12-07 11:27:45,886 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-12-07 11:27:46,029 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-12-07 11:27:46,168 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 11:27:46,324 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2019-12-07 11:27:46,483 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-12-07 11:27:46,617 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-12-07 11:27:46,736 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-12-07 11:27:46,859 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 11:27:46,996 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 11:27:47,128 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 11:27:47,254 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-12-07 11:27:47,377 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:27:47,495 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-12-07 11:27:51,608 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-12-07 11:27:52,611 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:27:52,751 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:27:52,897 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:27:53,074 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:27:53,293 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:27:53,600 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:27:53,899 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:27:54,239 WARN L192 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:27:54,587 WARN L192 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:27:54,926 WARN L192 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:27:55,062 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:27:55,185 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:27:55,294 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:27:55,411 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:27:55,524 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:27:55,648 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:27:55,771 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:27:55,894 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:27:56,015 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:27:56,148 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:27:56,274 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:27:56,404 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:27:56,536 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:27:56,674 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:27:56,814 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:27:56,952 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:27:57,092 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:27:57,243 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:27:57,402 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:27:57,559 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:27:57,710 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:27:57,869 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 11:27:58,021 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 11:27:58,184 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:27:58,344 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:27:58,509 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 11:27:58,673 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 11:27:58,841 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 11:27:59,015 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 11:27:59,187 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-12-07 11:27:59,344 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2019-12-07 11:27:59,499 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-12-07 11:27:59,654 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-12-07 11:27:59,816 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-12-07 11:27:59,959 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-12-07 11:28:00,100 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-12-07 11:28:00,236 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 11:28:00,368 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2019-12-07 11:28:00,496 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-12-07 11:28:00,621 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-12-07 11:28:00,739 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 11:28:00,855 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 11:28:00,969 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 11:28:01,089 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 11:28:01,203 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-12-07 11:28:01,313 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:28:01,420 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-12-07 11:28:01,523 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:28:01,625 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 11:28:04,249 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-12-07 11:28:04,356 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-12-07 11:28:04,466 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-12-07 11:28:04,574 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-12-07 11:28:04,696 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-12-07 11:28:04,806 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-12-07 11:28:04,921 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-12-07 11:28:05,047 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-12-07 11:28:05,170 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-12-07 11:28:05,307 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-12-07 11:28:05,463 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-12-07 11:28:05,609 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-12-07 11:28:05,749 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-12-07 11:28:05,909 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 11:28:07,499 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-12-07 11:28:07,605 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-12-07 11:28:07,718 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 11:28:08,913 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:28:09,020 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:09,143 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:09,276 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:09,409 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:09,551 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:09,692 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:09,809 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:09,926 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:10,051 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:10,171 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:10,298 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:10,426 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:10,556 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:10,682 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:10,815 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:10,948 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:11,090 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:28:11,241 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:28:11,387 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:28:11,529 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:28:11,684 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:28:11,830 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:28:11,981 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:28:12,131 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:28:12,296 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 11:28:12,468 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 11:28:12,632 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:28:12,795 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:28:12,958 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2019-12-07 11:28:13,109 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-12-07 11:28:13,268 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-12-07 11:28:13,414 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-12-07 11:28:13,557 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-12-07 11:28:13,691 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-12-07 11:28:13,820 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2019-12-07 11:28:13,944 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 11:28:14,066 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-12-07 11:28:14,183 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-12-07 11:28:14,296 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-12-07 11:28:14,405 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-12-07 11:28:14,512 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 11:28:14,616 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 11:28:19,408 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:28:20,090 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:28:20,196 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:20,306 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:20,436 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:20,569 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:20,688 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:20,799 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:20,916 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:21,029 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:21,152 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:21,269 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:21,399 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:21,529 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:21,687 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:21,847 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:22,031 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:22,199 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:22,342 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:28:22,487 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:28:22,648 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:28:22,792 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:28:22,947 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:28:23,097 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 11:28:23,252 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:28:23,407 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 11:28:23,561 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-12-07 11:28:23,704 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-12-07 11:28:23,843 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-12-07 11:28:23,975 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2019-12-07 11:28:24,107 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-12-07 11:28:24,232 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 11:28:24,351 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-12-07 11:28:24,468 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 11:28:24,583 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 11:28:24,695 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 11:28:24,805 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-12-07 11:28:24,910 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 11:28:25,030 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 11:28:25,150 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-12-07 11:28:25,265 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-12-07 11:28:25,384 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:28:31,792 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 11:28:31,912 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 11:28:32,039 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:28:32,222 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:28:32,436 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:28:32,653 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:28:32,783 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:28:32,904 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:28:33,007 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:28:33,109 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:28:33,215 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:33,318 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:33,432 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:33,556 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:33,704 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:33,825 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:33,943 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:34,059 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:34,184 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:34,307 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:34,435 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:34,560 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:34,694 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:34,825 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:34,961 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:35,100 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:35,241 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:28:35,376 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 11:28:35,518 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:28:35,657 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 11:28:35,798 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-12-07 11:28:35,931 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-12-07 11:28:36,060 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-12-07 11:28:36,183 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-12-07 11:28:36,303 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-12-07 11:28:36,422 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-12-07 11:28:36,535 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-12-07 11:28:36,643 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 11:28:36,752 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 11:28:36,854 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 11:28:36,956 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 11:28:37,426 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:41,437 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 11:28:41,560 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 11:28:41,705 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 11:28:41,860 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 11:28:42,016 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 11:28:42,981 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:43,100 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:43,212 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:43,321 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:43,443 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:43,555 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:43,673 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:43,791 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:43,917 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:44,034 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:44,160 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:44,291 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:44,434 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:44,575 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 11:28:44,721 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:44,867 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 11:28:45,007 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 11:28:45,143 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2019-12-07 11:28:45,286 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-12-07 11:28:45,435 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-12-07 11:28:45,590 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-12-07 11:28:45,741 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-12-07 11:28:45,852 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 11:28:51,486 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:28:51,599 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:28:51,745 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:51,853 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:28:51,965 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:52,075 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:28:52,189 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:52,301 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:28:52,418 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:52,535 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:28:52,658 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:52,777 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 11:28:52,907 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:53,054 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 11:28:53,237 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-12-07 11:28:53,375 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-12-07 11:28:53,488 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-12-07 11:28:53,599 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-12-07 11:28:53,705 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 11:28:53,819 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 11:28:53,929 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-12-07 11:28:57,472 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-12-07 11:28:57,577 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-12-07 11:28:57,704 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-12-07 11:29:00,423 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 11:29:00,565 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:29:00,710 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:29:00,858 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:29:01,004 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:29:01,191 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:29:01,425 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:29:01,663 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:29:01,802 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:29:01,911 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:29:02,017 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:29:02,136 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:29:02,247 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:29:02,363 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:29:02,479 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 11:29:02,610 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:29:02,739 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 11:29:02,866 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 11:29:02,974 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 11:29:03,086 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 11:29:03,197 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 11:29:03,303 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-12-07 11:29:03,416 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 11:29:03,518 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-12-07 11:29:08,379 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:29:08,490 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:29:08,601 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 11:29:08,734 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:29:08,871 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:29:09,017 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:29:09,151 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 11:29:09,263 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:29:09,371 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 11:29:09,489 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 11:29:09,601 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-12-07 11:29:09,709 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 11:29:13,272 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-07 11:29:14,676 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:29:14,787 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:29:14,909 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:29:15,022 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 11:29:15,330 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:29:15,442 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 11:29:15,548 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 11:29:26,636 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 11:29:27,708 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-12-07 11:29:28,016 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-12-07 11:29:36,846 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-12-07 11:29:36,968 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 11:29:37,079 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-12-07 11:29:38,966 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-12-07 11:29:39,105 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-12-07 11:29:46,285 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-12-07 11:29:46,398 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 11:29:46,512 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-12-07 11:29:46,623 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-12-07 11:29:46,747 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-12-07 11:29:46,879 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-12-07 11:29:47,004 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-12-07 11:29:47,136 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-07 11:29:47,263 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-12-07 11:29:47,409 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-12-07 11:29:47,568 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-12-07 11:29:47,702 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-12-07 11:29:47,860 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 11:29:47,993 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-12-07 11:29:48,101 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-12-07 11:29:48,210 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-12-07 11:29:48,327 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-12-07 11:29:48,452 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-12-07 11:29:48,561 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-12-07 11:29:48,668 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-12-07 11:29:52,412 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-12-07 11:29:52,575 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-12-07 11:29:52,710 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-12-07 11:30:01,047 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 11:30:01,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561612255] [2019-12-07 11:30:01,049 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 11:30:01,049 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:30:01,049 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 11:30:01,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:30:01,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 67] total 68 [2019-12-07 11:30:01,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034768001] [2019-12-07 11:30:01,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-12-07 11:30:01,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:30:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-12-07 11:30:01,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1125, Invalid=3431, Unknown=0, NotChecked=0, Total=4556 [2019-12-07 11:30:01,051 INFO L87 Difference]: Start difference. First operand 6980 states and 7072 transitions. Second operand 68 states. [2019-12-07 11:30:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:30:01,570 INFO L93 Difference]: Finished difference Result 7210 states and 7303 transitions. [2019-12-07 11:30:01,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-12-07 11:30:01,570 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 374 [2019-12-07 11:30:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:30:01,570 INFO L225 Difference]: With dead ends: 7210 [2019-12-07 11:30:01,571 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 11:30:01,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 682 SyntacticMatches, 65 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2790 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3269, Invalid=6631, Unknown=0, NotChecked=0, Total=9900 [2019-12-07 11:30:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 11:30:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 11:30:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 11:30:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 11:30:01,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 374 [2019-12-07 11:30:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:30:01,582 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:30:01,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-12-07 11:30:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:30:01,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 11:30:01,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:30:01,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 11:30:02,243 WARN L192 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 14 [2019-12-07 11:30:02,245 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,245 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,245 INFO L242 CegarLoopResult]: At program point L20-2(line 20) 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 11:30:02,245 INFO L246 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-12-07 11:30:02,245 INFO L246 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,245 INFO L246 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L249 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 11:30:02,246 INFO L242 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 31)) [2019-12-07 11:30:02,246 INFO L246 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-12-07 11:30:02,247 INFO L246 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2019-12-07 11:30:02,247 INFO L249 CegarLoopResult]: At program point L24(lines 24 35) the Hoare annotation is: true [2019-12-07 11:30:02,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:30:02 BoogieIcfgContainer [2019-12-07 11:30:02,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:30:02,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:30:02,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:30:02,253 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:30:02,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:26:36" (3/4) ... [2019-12-07 11:30:02,255 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 11:30:02,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2019-12-07 11:30:02,262 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 11:30:02,262 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 11:30:02,287 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fccd663d-e542-4fb0-b2d7-d3960c3fdbd2/bin/utaipan/witness.graphml [2019-12-07 11:30:02,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:30:02,287 INFO L168 Benchmark]: Toolchain (without parser) took 205744.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 939.4 MB in the beginning and 912.9 MB in the end (delta: 26.5 MB). Peak memory consumption was 148.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:30:02,288 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:30:02,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.3 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:30:02,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.70 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 11:30:02,288 INFO L168 Benchmark]: Boogie Preprocessor took 10.24 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 11:30:02,288 INFO L168 Benchmark]: RCFGBuilder took 167.83 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 11:30:02,288 INFO L168 Benchmark]: TraceAbstraction took 205341.14 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 915.2 MB in the end (delta: 144.9 MB). Peak memory consumption was 184.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:30:02,288 INFO L168 Benchmark]: Witness Printer took 33.86 ms. Allocated memory is still 1.2 GB. Free memory was 915.2 MB in the beginning and 912.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:30:02,289 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 82.3 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.70 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 10.24 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 167.83 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 205341.14 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 915.2 MB in the end (delta: 144.9 MB). Peak memory consumption was 184.8 MB. Max. memory is 11.5 GB. * Witness Printer took 33.86 ms. Allocated memory is still 1.2 GB. Free memory was 915.2 MB in the beginning and 912.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 6 error locations. Result: SAFE, OverallTime: 204.8s, OverallIterations: 14, TraceHistogramMax: 47, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 448 SDtfs, 5862 SDslu, 3051 SDs, 0 SdLazy, 2774 SolverSat, 1234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3162 GetRequests, 2260 SyntacticMatches, 150 SemanticMatches, 752 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28424 ImplicationChecksByTransitivity, 17.7s 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, 123 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, 195.3s InterpolantComputationTime, 2690 NumberOfCodeBlocks, 2685 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 3980 ConstructedInterpolants, 0 QuantifiedInterpolants, 3104106 SizeOfPredicates, 127 NumberOfNonLiveVariables, 2328 ConjunctsInSsa, 346 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 19621/48808 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...