./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:49:32,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:49:32,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:49:32,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:49:32,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:49:32,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:49:32,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:49:32,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:49:32,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:49:32,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:49:32,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:49:32,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:49:32,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:49:32,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:49:32,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:49:32,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:49:32,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:49:32,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:49:32,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:49:32,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:49:32,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:49:32,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:49:32,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:49:32,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:49:32,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:49:32,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:49:32,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:49:32,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:49:32,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:49:32,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:49:32,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:49:32,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:49:32,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:49:32,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:49:32,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:49:32,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:49:32,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:49:32,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:49:32,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:49:32,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:49:32,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:49:32,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 12:49:32,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:49:32,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:49:32,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:49:32,123 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:49:32,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:49:32,123 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:49:32,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 12:49:32,124 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:49:32,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:49:32,124 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 12:49:32,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 12:49:32,124 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:49:32,124 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 12:49:32,124 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 12:49:32,125 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 12:49:32,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:49:32,125 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:49:32,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:49:32,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:49:32,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:49:32,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:49:32,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:49:32,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:49:32,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:49:32,128 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_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 [2019-12-07 12:49:32,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:49:32,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:49:32,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:49:32,238 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:49:32,238 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:49:32,238 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c [2019-12-07 12:49:32,278 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/data/df5177055/04ed2b5a2cfc46dcbc31a9b3e590333a/FLAG6d174f520 [2019-12-07 12:49:32,679 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:49:32,679 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/sv-benchmarks/c/termination-numeric/recHanoi02-1.c [2019-12-07 12:49:32,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/data/df5177055/04ed2b5a2cfc46dcbc31a9b3e590333a/FLAG6d174f520 [2019-12-07 12:49:32,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/data/df5177055/04ed2b5a2cfc46dcbc31a9b3e590333a [2019-12-07 12:49:32,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:49:32,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:49:32,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:49:32,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:49:32,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:49:32,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@987398d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32, skipping insertion in model container [2019-12-07 12:49:32,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:49:32,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:49:32,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:49:32,813 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:49:32,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:49:32,864 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:49:32,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32 WrapperNode [2019-12-07 12:49:32,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:49:32,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:49:32,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:49:32,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:49:32,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:49:32,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:49:32,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:49:32,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:49:32,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... [2019-12-07 12:49:32,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:49:32,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:49:32,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:49:32,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:49:32,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-12-07 12:49:32,935 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-12-07 12:49:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:49:32,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:49:33,055 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:49:33,055 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 12:49:33,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:33 BoogieIcfgContainer [2019-12-07 12:49:33,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:49:33,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:49:33,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:49:33,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:49:33,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:49:32" (1/3) ... [2019-12-07 12:49:33,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a211428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:49:33, skipping insertion in model container [2019-12-07 12:49:33,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:32" (2/3) ... [2019-12-07 12:49:33,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a211428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:49:33, skipping insertion in model container [2019-12-07 12:49:33,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:33" (3/3) ... [2019-12-07 12:49:33,060 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-1.c [2019-12-07 12:49:33,067 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:49:33,070 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 12:49:33,077 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 12:49:33,091 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:49:33,092 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:49:33,092 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:49:33,092 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:49:33,092 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:49:33,092 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:49:33,092 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:49:33,092 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:49:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 12:49:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:49:33,106 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:33,107 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:49:33,107 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 12:49:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:33,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2019-12-07 12:49:33,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:33,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830770018] [2019-12-07 12:49:33,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:33,219 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 12:49:33,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830770018] [2019-12-07 12:49:33,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:49:33,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:49:33,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224935561] [2019-12-07 12:49:33,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:49:33,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:33,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:49:33,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:49:33,237 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-12-07 12:49:33,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:33,292 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-12-07 12:49:33,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:49:33,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 12:49:33,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:33,299 INFO L225 Difference]: With dead ends: 26 [2019-12-07 12:49:33,300 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 12:49:33,302 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 12:49:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 12:49:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 12:49:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 12:49:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-12-07 12:49:33,327 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2019-12-07 12:49:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:33,328 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-12-07 12:49:33,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:49:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-12-07 12:49:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:49:33,328 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:33,328 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:49:33,329 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 12:49:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:33,329 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2019-12-07 12:49:33,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:33,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821119093] [2019-12-07 12:49:33,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:33,355 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 12:49:33,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821119093] [2019-12-07 12:49:33,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:49:33,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:49:33,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331830842] [2019-12-07 12:49:33,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:49:33,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:33,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:49:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:49:33,357 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-12-07 12:49:33,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:33,398 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-12-07 12:49:33,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:49:33,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 12:49:33,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:33,401 INFO L225 Difference]: With dead ends: 39 [2019-12-07 12:49:33,401 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 12:49:33,402 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 12:49:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 12:49:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-12-07 12:49:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 12:49:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 12:49:33,411 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2019-12-07 12:49:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:33,412 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 12:49:33,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:49:33,412 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 12:49:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 12:49:33,413 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:33,413 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:49:33,414 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 12:49:33,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:33,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1144431293, now seen corresponding path program 1 times [2019-12-07 12:49:33,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:33,415 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978530692] [2019-12-07 12:49:33,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:33,460 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 12:49:33,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978530692] [2019-12-07 12:49:33,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416646098] [2019-12-07 12:49:33,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:33,487 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:49:33,490 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:33,507 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 12:49:33,507 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:33,546 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 12:49:33,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1521359666] [2019-12-07 12:49:33,562 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 12:49:33,562 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:33,566 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 12:49:33,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:33,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2019-12-07 12:49:33,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486633506] [2019-12-07 12:49:33,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 12:49:33,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:33,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 12:49:33,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-12-07 12:49:33,568 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 12 states. [2019-12-07 12:49:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:33,702 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2019-12-07 12:49:33,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 12:49:33,702 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2019-12-07 12:49:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:33,704 INFO L225 Difference]: With dead ends: 91 [2019-12-07 12:49:33,704 INFO L226 Difference]: Without dead ends: 90 [2019-12-07 12:49:33,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2019-12-07 12:49:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-12-07 12:49:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2019-12-07 12:49:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 12:49:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2019-12-07 12:49:33,714 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 12 [2019-12-07 12:49:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:33,714 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2019-12-07 12:49:33,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 12:49:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2019-12-07 12:49:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 12:49:33,715 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:33,715 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:49:33,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:33,916 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 12:49:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash -287349001, now seen corresponding path program 1 times [2019-12-07 12:49:33,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:33,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634508989] [2019-12-07 12:49:33,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:33,957 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 12:49:33,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634508989] [2019-12-07 12:49:33,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:49:33,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 12:49:33,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502262422] [2019-12-07 12:49:33,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:49:33,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:33,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:49:33,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:49:33,960 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 4 states. [2019-12-07 12:49:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:33,987 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2019-12-07 12:49:33,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:49:33,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 12:49:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:33,989 INFO L225 Difference]: With dead ends: 103 [2019-12-07 12:49:33,989 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 12:49:33,990 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 12:49:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 12:49:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-12-07 12:49:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-12-07 12:49:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2019-12-07 12:49:34,000 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 14 [2019-12-07 12:49:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:34,000 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2019-12-07 12:49:34,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:49:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2019-12-07 12:49:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 12:49:34,001 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:34,001 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-12-07 12:49:34,001 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 12:49:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1696558728, now seen corresponding path program 2 times [2019-12-07 12:49:34,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:34,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327322343] [2019-12-07 12:49:34,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:34,085 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 12:49:34,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327322343] [2019-12-07 12:49:34,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842755366] [2019-12-07 12:49:34,086 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:34,108 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 12:49:34,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:49:34,109 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 12:49:34,111 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:34,119 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 12:49:34,119 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:34,241 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 12:49:34,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29413300] [2019-12-07 12:49:34,242 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 12:49:34,242 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:34,242 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 12:49:34,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:34,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2019-12-07 12:49:34,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118040971] [2019-12-07 12:49:34,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 12:49:34,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:34,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 12:49:34,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2019-12-07 12:49:34,244 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand 24 states. [2019-12-07 12:49:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:34,589 INFO L93 Difference]: Finished difference Result 247 states and 262 transitions. [2019-12-07 12:49:34,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-07 12:49:34,590 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2019-12-07 12:49:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:34,592 INFO L225 Difference]: With dead ends: 247 [2019-12-07 12:49:34,592 INFO L226 Difference]: Without dead ends: 246 [2019-12-07 12:49:34,593 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 12:49:34,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2019-12-07 12:49:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 206. [2019-12-07 12:49:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-12-07 12:49:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 256 transitions. [2019-12-07 12:49:34,609 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 256 transitions. Word has length 27 [2019-12-07 12:49:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:34,609 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 256 transitions. [2019-12-07 12:49:34,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 12:49:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 256 transitions. [2019-12-07 12:49:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 12:49:34,611 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:34,611 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 12:49:34,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:34,812 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 12:49:34,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:34,813 INFO L82 PathProgramCache]: Analyzing trace with hash -563967927, now seen corresponding path program 1 times [2019-12-07 12:49:34,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:34,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097633583] [2019-12-07 12:49:34,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:34,872 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 12:49:34,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097633583] [2019-12-07 12:49:34,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166894958] [2019-12-07 12:49:34,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:34,891 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:49:34,892 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:34,906 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 12:49:34,907 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:34,963 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 12:49:34,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [492170139] [2019-12-07 12:49:34,964 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 12:49:34,964 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:34,964 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 12:49:34,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:34,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2019-12-07 12:49:34,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445126465] [2019-12-07 12:49:34,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 12:49:34,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:34,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 12:49:34,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 12:49:34,966 INFO L87 Difference]: Start difference. First operand 206 states and 256 transitions. Second operand 12 states. [2019-12-07 12:49:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:35,006 INFO L93 Difference]: Finished difference Result 399 states and 548 transitions. [2019-12-07 12:49:35,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 12:49:35,006 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2019-12-07 12:49:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:35,008 INFO L225 Difference]: With dead ends: 399 [2019-12-07 12:49:35,008 INFO L226 Difference]: Without dead ends: 397 [2019-12-07 12:49:35,009 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 12:49:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-12-07 12:49:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 376. [2019-12-07 12:49:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2019-12-07 12:49:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 457 transitions. [2019-12-07 12:49:35,027 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 457 transitions. Word has length 26 [2019-12-07 12:49:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:35,027 INFO L462 AbstractCegarLoop]: Abstraction has 376 states and 457 transitions. [2019-12-07 12:49:35,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 12:49:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 457 transitions. [2019-12-07 12:49:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 12:49:35,028 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:35,028 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:49:35,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:35,229 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 12:49:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash -303136509, now seen corresponding path program 1 times [2019-12-07 12:49:35,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:35,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314648598] [2019-12-07 12:49:35,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 12:49:35,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314648598] [2019-12-07 12:49:35,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656166421] [2019-12-07 12:49:35,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:35,298 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:49:35,299 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 12:49:35,313 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 12:49:35,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:49:35,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2019-12-07 12:49:35,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041531845] [2019-12-07 12:49:35,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:49:35,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:35,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:49:35,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-12-07 12:49:35,386 INFO L87 Difference]: Start difference. First operand 376 states and 457 transitions. Second operand 6 states. [2019-12-07 12:49:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:35,408 INFO L93 Difference]: Finished difference Result 376 states and 457 transitions. [2019-12-07 12:49:35,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:49:35,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-12-07 12:49:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:35,410 INFO L225 Difference]: With dead ends: 376 [2019-12-07 12:49:35,410 INFO L226 Difference]: Without dead ends: 332 [2019-12-07 12:49:35,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-12-07 12:49:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2019-12-07 12:49:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2019-12-07 12:49:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2019-12-07 12:49:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 352 transitions. [2019-12-07 12:49:35,421 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 352 transitions. Word has length 27 [2019-12-07 12:49:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:35,421 INFO L462 AbstractCegarLoop]: Abstraction has 332 states and 352 transitions. [2019-12-07 12:49:35,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:49:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 352 transitions. [2019-12-07 12:49:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-07 12:49:35,423 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:35,423 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2019-12-07 12:49:35,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:35,624 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 12:49:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:35,624 INFO L82 PathProgramCache]: Analyzing trace with hash -403286744, now seen corresponding path program 3 times [2019-12-07 12:49:35,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:35,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365518498] [2019-12-07 12:49:35,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:35,899 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 12:49:35,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365518498] [2019-12-07 12:49:35,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153342101] [2019-12-07 12:49:35,900 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:35,924 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 12:49:35,924 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:49:35,925 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 12:49:35,927 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:35,942 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 12:49:35,942 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:36,355 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 12:49:36,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297424110] [2019-12-07 12:49:36,356 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 12:49:36,356 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:36,356 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 12:49:36,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:36,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2019-12-07 12:49:36,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765323346] [2019-12-07 12:49:36,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 12:49:36,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:36,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 12:49:36,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 12:49:36,359 INFO L87 Difference]: Start difference. First operand 332 states and 352 transitions. Second operand 48 states. [2019-12-07 12:49:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:37,160 INFO L93 Difference]: Finished difference Result 799 states and 832 transitions. [2019-12-07 12:49:37,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-12-07 12:49:37,161 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 57 [2019-12-07 12:49:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:37,164 INFO L225 Difference]: With dead ends: 799 [2019-12-07 12:49:37,164 INFO L226 Difference]: Without dead ends: 798 [2019-12-07 12:49:37,167 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2204, Invalid=5278, Unknown=0, NotChecked=0, Total=7482 [2019-12-07 12:49:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-12-07 12:49:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 776. [2019-12-07 12:49:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-12-07 12:49:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 820 transitions. [2019-12-07 12:49:37,184 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 820 transitions. Word has length 57 [2019-12-07 12:49:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:37,185 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 820 transitions. [2019-12-07 12:49:37,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 12:49:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 820 transitions. [2019-12-07 12:49:37,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-07 12:49:37,187 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:37,187 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 12:49:37,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:37,388 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 12:49:37,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:37,388 INFO L82 PathProgramCache]: Analyzing trace with hash -158018185, now seen corresponding path program 2 times [2019-12-07 12:49:37,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:37,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089986561] [2019-12-07 12:49:37,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:37,458 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 12:49:37,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089986561] [2019-12-07 12:49:37,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691970570] [2019-12-07 12:49:37,459 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:37,480 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 12:49:37,480 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:49:37,481 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 12:49:37,483 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:37,517 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 12:49:37,517 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:37,900 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 12:49:37,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [692095801] [2019-12-07 12:49:37,901 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 12:49:37,901 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:37,901 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 12:49:37,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:37,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2019-12-07 12:49:37,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365793911] [2019-12-07 12:49:37,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 12:49:37,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:37,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 12:49:37,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-12-07 12:49:37,903 INFO L87 Difference]: Start difference. First operand 776 states and 820 transitions. Second operand 24 states. [2019-12-07 12:49:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:37,979 INFO L93 Difference]: Finished difference Result 1713 states and 1894 transitions. [2019-12-07 12:49:37,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 12:49:37,979 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 62 [2019-12-07 12:49:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:37,986 INFO L225 Difference]: With dead ends: 1713 [2019-12-07 12:49:37,986 INFO L226 Difference]: Without dead ends: 1415 [2019-12-07 12:49:37,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-12-07 12:49:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2019-12-07 12:49:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1415. [2019-12-07 12:49:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2019-12-07 12:49:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1459 transitions. [2019-12-07 12:49:38,022 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1459 transitions. Word has length 62 [2019-12-07 12:49:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:38,022 INFO L462 AbstractCegarLoop]: Abstraction has 1415 states and 1459 transitions. [2019-12-07 12:49:38,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 12:49:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1459 transitions. [2019-12-07 12:49:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-12-07 12:49:38,026 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:38,026 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2019-12-07 12:49:38,226 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:38,227 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 12:49:38,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:38,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1799494248, now seen corresponding path program 4 times [2019-12-07 12:49:38,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:38,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592499553] [2019-12-07 12:49:38,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:38,880 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 12:49:38,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592499553] [2019-12-07 12:49:38,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360400736] [2019-12-07 12:49:38,880 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:38,919 INFO L264 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 48 conjunts are in the unsatisfiable core [2019-12-07 12:49:38,923 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:38,949 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 12:49:38,949 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:40,314 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 12:49:40,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638330730] [2019-12-07 12:49:40,315 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 12:49:40,315 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:40,315 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 12:49:40,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:40,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2019-12-07 12:49:40,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168503218] [2019-12-07 12:49:40,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 96 states [2019-12-07 12:49:40,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:40,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2019-12-07 12:49:40,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2019-12-07 12:49:40,319 INFO L87 Difference]: Start difference. First operand 1415 states and 1459 transitions. Second operand 96 states. [2019-12-07 12:49:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:43,150 INFO L93 Difference]: Finished difference Result 3358 states and 3427 transitions. [2019-12-07 12:49:43,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-12-07 12:49:43,151 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 117 [2019-12-07 12:49:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:43,164 INFO L225 Difference]: With dead ends: 3358 [2019-12-07 12:49:43,165 INFO L226 Difference]: Without dead ends: 3357 [2019-12-07 12:49:43,175 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=9119, Invalid=22033, Unknown=0, NotChecked=0, Total=31152 [2019-12-07 12:49:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2019-12-07 12:49:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3311. [2019-12-07 12:49:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2019-12-07 12:49:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 3403 transitions. [2019-12-07 12:49:43,229 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 3403 transitions. Word has length 117 [2019-12-07 12:49:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:43,230 INFO L462 AbstractCegarLoop]: Abstraction has 3311 states and 3403 transitions. [2019-12-07 12:49:43,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 96 states. [2019-12-07 12:49:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 3403 transitions. [2019-12-07 12:49:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-12-07 12:49:43,232 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:43,232 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 12:49:43,433 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:43,433 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 12:49:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1176109879, now seen corresponding path program 3 times [2019-12-07 12:49:43,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:43,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012817127] [2019-12-07 12:49:43,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:43,619 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 12:49:43,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012817127] [2019-12-07 12:49:43,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358374687] [2019-12-07 12:49:43,619 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:43,654 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 12:49:43,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:49:43,655 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 12:49:43,658 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:43,772 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 12:49:43,772 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:46,961 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 12:49:46,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1268477786] [2019-12-07 12:49:46,962 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 12:49:46,962 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:46,962 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 12:49:46,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:46,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2019-12-07 12:49:46,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247274980] [2019-12-07 12:49:46,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 12:49:46,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:46,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 12:49:46,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 12:49:46,964 INFO L87 Difference]: Start difference. First operand 3311 states and 3403 transitions. Second operand 48 states. [2019-12-07 12:49:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:47,100 INFO L93 Difference]: Finished difference Result 7200 states and 7855 transitions. [2019-12-07 12:49:47,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-12-07 12:49:47,100 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 134 [2019-12-07 12:49:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:47,113 INFO L225 Difference]: With dead ends: 7200 [2019-12-07 12:49:47,114 INFO L226 Difference]: Without dead ends: 5849 [2019-12-07 12:49:47,117 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 233 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 12:49:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2019-12-07 12:49:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5849. [2019-12-07 12:49:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2019-12-07 12:49:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 5941 transitions. [2019-12-07 12:49:47,201 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 5941 transitions. Word has length 134 [2019-12-07 12:49:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:47,201 INFO L462 AbstractCegarLoop]: Abstraction has 5849 states and 5941 transitions. [2019-12-07 12:49:47,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 12:49:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 5941 transitions. [2019-12-07 12:49:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-12-07 12:49:47,205 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:47,206 INFO L410 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2019-12-07 12:49:47,406 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:47,406 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 12:49:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:47,407 INFO L82 PathProgramCache]: Analyzing trace with hash -513178392, now seen corresponding path program 5 times [2019-12-07 12:49:47,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:47,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794047026] [2019-12-07 12:49:47,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:49,681 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 12:49:49,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794047026] [2019-12-07 12:49:49,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783837877] [2019-12-07 12:49:49,690 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:49,815 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2019-12-07 12:49:49,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:49:49,818 INFO L264 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 104 conjunts are in the unsatisfiable core [2019-12-07 12:49:49,821 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:49,959 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 12:49:49,960 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:49:55,908 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 12:49:55,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225340659] [2019-12-07 12:49:55,909 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 12:49:55,909 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:49:55,910 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 12:49:55,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:49:55,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 81, 96] total 192 [2019-12-07 12:49:55,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987069478] [2019-12-07 12:49:55,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 193 states [2019-12-07 12:49:55,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:49:55,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2019-12-07 12:49:55,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9220, Invalid=27836, Unknown=0, NotChecked=0, Total=37056 [2019-12-07 12:49:55,915 INFO L87 Difference]: Start difference. First operand 5849 states and 5941 transitions. Second operand 193 states. [2019-12-07 12:49:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:49:55,965 INFO L93 Difference]: Finished difference Result 5849 states and 5941 transitions. [2019-12-07 12:49:55,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:49:55,965 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 237 [2019-12-07 12:49:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:49:55,978 INFO L225 Difference]: With dead ends: 5849 [2019-12-07 12:49:55,978 INFO L226 Difference]: Without dead ends: 5848 [2019-12-07 12:49:55,980 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 361 SyntacticMatches, 16 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12747 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=9602, Invalid=28228, Unknown=0, NotChecked=0, Total=37830 [2019-12-07 12:49:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2019-12-07 12:49:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 5848. [2019-12-07 12:49:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2019-12-07 12:49:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 5940 transitions. [2019-12-07 12:49:56,060 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 5940 transitions. Word has length 237 [2019-12-07 12:49:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:49:56,061 INFO L462 AbstractCegarLoop]: Abstraction has 5848 states and 5940 transitions. [2019-12-07 12:49:56,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 193 states. [2019-12-07 12:49:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 5940 transitions. [2019-12-07 12:49:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2019-12-07 12:49:56,068 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:49:56,068 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 12:49:56,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:49:56,268 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 12:49:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:49:56,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1031646903, now seen corresponding path program 4 times [2019-12-07 12:49:56,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:49:56,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249872857] [2019-12-07 12:49:56,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:49:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:56,902 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 12:49:56,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249872857] [2019-12-07 12:49:56,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169625749] [2019-12-07 12:49:56,903 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/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 12:49:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:49:56,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 12:49:56,990 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:49:57,400 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 12:49:57,400 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:50:00,344 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:50:00,466 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:50:00,583 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:50:00,696 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-12-07 12:50:00,904 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 12:50:01,413 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 12:50:01,525 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 12:50:01,629 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 12:50:01,738 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:50:01,848 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:50:04,559 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-12-07 12:50:04,662 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-12-07 12:50:05,556 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 12:50:05,678 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:50:05,797 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:50:05,919 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 12:50:06,024 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 12:50:09,385 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 12:50:09,491 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 12:50:12,432 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:50:12,535 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:50:14,498 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-12-07 12:50:21,576 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 12:50:21,677 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 12:50:21,786 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-12-07 12:50:21,896 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-12-07 12:50:22,011 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-12-07 12:50:22,129 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-12-07 12:50:25,526 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-12-07 12:50:25,649 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-12-07 12:50:30,938 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 12:50:30,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1663261736] [2019-12-07 12:50:30,939 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 12:50:30,939 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:50:30,939 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 12:50:30,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:50:30,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 63 [2019-12-07 12:50:30,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701333801] [2019-12-07 12:50:30,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2019-12-07 12:50:30,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:50:30,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2019-12-07 12:50:30,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2019-12-07 12:50:30,942 INFO L87 Difference]: Start difference. First operand 5848 states and 5940 transitions. Second operand 64 states. [2019-12-07 12:50:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:50:31,097 INFO L93 Difference]: Finished difference Result 8441 states and 8908 transitions. [2019-12-07 12:50:31,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-12-07 12:50:31,098 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 278 [2019-12-07 12:50:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:50:31,113 INFO L225 Difference]: With dead ends: 8441 [2019-12-07 12:50:31,113 INFO L226 Difference]: Without dead ends: 6980 [2019-12-07 12:50:31,117 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 485 SyntacticMatches, 54 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3384 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2019-12-07 12:50:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6980 states. [2019-12-07 12:50:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6980 to 6980. [2019-12-07 12:50:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6980 states. [2019-12-07 12:50:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 7072 transitions. [2019-12-07 12:50:31,190 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 7072 transitions. Word has length 278 [2019-12-07 12:50:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:50:31,190 INFO L462 AbstractCegarLoop]: Abstraction has 6980 states and 7072 transitions. [2019-12-07 12:50:31,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 64 states. [2019-12-07 12:50:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 7072 transitions. [2019-12-07 12:50:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2019-12-07 12:50:31,200 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:50:31,201 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 12:50:31,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:50:31,401 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 12:50:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:50:31,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1697805385, now seen corresponding path program 5 times [2019-12-07 12:50:31,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:50:31,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920354171] [2019-12-07 12:50:31,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:50:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:50:32,030 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 12:50:32,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920354171] [2019-12-07 12:50:32,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754894776] [2019-12-07 12:50:32,030 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:50:32,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2019-12-07 12:50:32,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:50:32,549 INFO L264 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 66 conjunts are in the unsatisfiable core [2019-12-07 12:50:32,552 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:50:32,677 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 12:50:32,677 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:50:36,230 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:50:36,344 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:50:36,454 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:50:36,559 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:50:36,667 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:50:36,775 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:50:36,895 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:50:37,020 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:50:37,164 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:50:37,303 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:50:37,428 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:50:37,568 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:50:37,709 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:50:37,836 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:50:37,972 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:50:38,125 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:50:38,292 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:50:38,459 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:50:38,631 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:50:38,817 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:50:39,035 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:50:39,198 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:50:39,362 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:50:39,509 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:50:39,663 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:50:39,814 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:50:39,976 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 12:50:40,131 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 12:50:40,297 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 12:50:40,464 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 12:50:40,633 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 12:50:40,803 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 12:50:40,981 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 12:50:41,157 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 12:50:41,334 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 12:50:41,509 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 12:50:41,695 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 12:50:41,877 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 12:50:42,064 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-12-07 12:50:42,254 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2019-12-07 12:50:42,432 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2019-12-07 12:50:42,611 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2019-12-07 12:50:42,785 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-12-07 12:50:42,952 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-12-07 12:50:43,118 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-12-07 12:50:43,296 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-12-07 12:50:43,491 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-12-07 12:50:43,695 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 12:50:43,829 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2019-12-07 12:50:43,967 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 12:50:44,104 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-12-07 12:50:44,226 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 12:50:44,342 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-12-07 12:50:44,455 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-12-07 12:50:44,567 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-12-07 12:50:44,683 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 12:50:44,794 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 12:50:44,905 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-12-07 12:50:45,014 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-12-07 12:50:45,116 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:50:49,839 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:50:50,242 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:50:50,345 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:50:50,457 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:50:50,567 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:50:50,679 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:50:50,793 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:50:50,924 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:50:51,037 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:50:51,159 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:50:51,277 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:50:51,400 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:50:51,523 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:50:51,647 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:50:51,774 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:50:51,914 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:50:52,044 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:50:52,179 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:50:52,310 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:50:52,450 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:50:52,599 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:50:52,758 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:50:52,917 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:50:53,084 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:50:53,244 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:50:53,412 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:50:53,591 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:50:53,796 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 12:50:54,008 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 12:50:54,233 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 12:50:54,474 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 12:50:54,784 WARN L192 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 12:50:54,988 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 12:50:55,160 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 12:50:55,329 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 12:50:55,508 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-12-07 12:50:55,671 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2019-12-07 12:50:55,827 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-12-07 12:50:55,979 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-12-07 12:50:56,131 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-12-07 12:50:56,276 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-12-07 12:50:56,426 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-12-07 12:50:56,563 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 12:50:56,696 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2019-12-07 12:50:56,826 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-12-07 12:50:56,959 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-12-07 12:50:57,082 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 12:50:57,199 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 12:50:57,315 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 12:50:57,421 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 12:50:57,526 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-12-07 12:50:57,627 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-12-07 12:51:02,814 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:02,922 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:03,029 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:03,237 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:03,342 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:03,462 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:03,590 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:03,731 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:03,868 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:04,010 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:04,131 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:04,263 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:04,393 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:04,535 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:04,671 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:04,817 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:04,949 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:05,086 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:05,220 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:05,364 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:51:05,503 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:51:05,659 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:51:05,815 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:51:05,981 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:51:06,146 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:51:06,320 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:51:06,471 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:51:06,629 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 12:51:06,785 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 12:51:06,952 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 12:51:07,120 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 12:51:07,289 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2019-12-07 12:51:07,445 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-12-07 12:51:07,596 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-12-07 12:51:07,740 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-12-07 12:51:07,879 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-12-07 12:51:08,019 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2019-12-07 12:51:08,157 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-12-07 12:51:08,299 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 12:51:08,436 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-12-07 12:51:08,557 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 12:51:08,684 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-12-07 12:51:08,795 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 12:51:08,911 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 12:51:09,028 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 12:51:09,140 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 12:51:09,244 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-12-07 12:51:09,647 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:09,755 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-12-07 12:51:09,860 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:14,662 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:51:14,773 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:51:14,893 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:15,025 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:15,140 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:15,242 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:15,348 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:15,451 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:15,568 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:15,697 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:15,843 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:15,959 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:16,076 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:16,190 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:16,314 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:16,432 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:16,558 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:16,682 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:16,812 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:16,938 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:17,073 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:17,209 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:17,369 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:51:17,511 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:51:17,655 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:51:17,794 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:51:17,952 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:51:18,102 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:51:18,263 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:51:18,422 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:51:18,594 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-12-07 12:51:18,742 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-12-07 12:51:18,892 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-12-07 12:51:19,041 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2019-12-07 12:51:19,173 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2019-12-07 12:51:19,302 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2019-12-07 12:51:19,427 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-12-07 12:51:19,553 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-12-07 12:51:19,681 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-12-07 12:51:19,807 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 12:51:19,930 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-12-07 12:51:20,043 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 12:51:20,145 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 12:51:20,246 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-12-07 12:51:25,331 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:25,630 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:25,739 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:25,846 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:25,961 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:26,067 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:26,184 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:26,298 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:26,417 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:26,534 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:26,661 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:26,784 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:26,912 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:27,038 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:27,175 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:27,306 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:27,441 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:27,572 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:27,717 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:51:27,861 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:51:28,010 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:51:28,152 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-12-07 12:51:28,313 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-12-07 12:51:28,478 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-12-07 12:51:28,653 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-12-07 12:51:28,791 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-12-07 12:51:28,923 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-12-07 12:51:29,046 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-12-07 12:51:29,161 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-12-07 12:51:29,273 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 12:51:29,379 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-12-07 12:51:29,484 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-12-07 12:51:29,594 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-12-07 12:51:29,705 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-12-07 12:51:29,808 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-12-07 12:51:29,909 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-12-07 12:51:30,017 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 12:51:30,120 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-12-07 12:51:30,603 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:30,725 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-12-07 12:51:30,842 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-12-07 12:51:30,964 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-07 12:51:34,237 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-12-07 12:51:34,340 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-12-07 12:51:34,461 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 12:51:34,572 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-12-07 12:51:34,690 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 12:51:34,804 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 12:51:34,928 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 12:51:35,048 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 12:51:35,174 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 12:51:35,299 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 12:51:35,429 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:51:35,559 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:51:35,688 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:35,901 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:36,009 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:36,118 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:36,225 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:36,336 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:36,445 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:36,563 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:36,691 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:36,846 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:37,007 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:37,170 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:37,296 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:37,423 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:37,548 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:37,684 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:37,813 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-12-07 12:51:37,950 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:38,086 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 12:51:38,220 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-12-07 12:51:38,343 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2019-12-07 12:51:38,462 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-12-07 12:51:38,579 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-12-07 12:51:38,693 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-12-07 12:51:38,805 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-12-07 12:51:38,928 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-12-07 12:51:39,042 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 12:51:39,152 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-12-07 12:51:42,924 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 12:51:43,140 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-12-07 12:51:43,267 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-12-07 12:51:43,381 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-12-07 12:51:43,507 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-12-07 12:51:43,623 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-12-07 12:51:43,742 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-12-07 12:51:46,138 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:46,247 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:46,355 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:46,478 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:46,596 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:46,720 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:46,834 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:46,950 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:47,065 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:47,192 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:47,323 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-12-07 12:51:47,452 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:47,579 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 12:51:47,707 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-12-07 12:51:47,825 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-12-07 12:51:47,940 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-12-07 12:51:48,050 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-12-07 12:51:48,156 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-12-07 12:51:48,259 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-12-07 12:51:53,559 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 12:51:53,663 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:51:53,765 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:51:53,873 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:53,978 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:51:54,088 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:54,199 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:51:54,311 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:54,418 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:51:54,530 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:54,639 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:51:54,755 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:54,870 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 12:51:54,996 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:55,112 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 12:51:55,234 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-12-07 12:51:55,343 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-12-07 12:51:55,449 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-12-07 12:51:55,551 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-12-07 12:52:00,523 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 12:52:00,649 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-12-07 12:52:00,781 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:52:00,909 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 12:52:01,064 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:52:01,210 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-12-07 12:52:01,347 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:52:01,483 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:52:01,628 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:52:01,766 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 12:52:01,916 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:52:02,063 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 12:52:02,218 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-12-07 12:52:02,324 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-12-07 12:52:02,426 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-12-07 12:52:02,628 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-12-07 12:52:02,729 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-12-07 12:52:02,836 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2019-12-07 12:52:02,937 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-12-07 12:52:08,081 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:52:08,184 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 12:52:12,947 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 12:52:13,153 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 12:52:19,110 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-07 12:52:19,220 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 12:52:19,328 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-12-07 12:52:19,463 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-12-07 12:52:19,596 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-12-07 12:52:23,179 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-12-07 12:52:23,288 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-12-07 12:52:23,400 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-12-07 12:52:23,520 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 12:52:23,632 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-12-07 12:52:23,752 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-12-07 12:52:23,875 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-12-07 12:52:24,002 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-12-07 12:52:26,970 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-12-07 12:52:27,087 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-12-07 12:52:27,197 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-12-07 12:52:27,318 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-12-07 12:52:46,662 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 12:52:46,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1101850593] [2019-12-07 12:52:46,664 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 12:52:46,664 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:52:46,664 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 12:52:46,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:52:46,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 67] total 68 [2019-12-07 12:52:46,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145859055] [2019-12-07 12:52:46,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-12-07 12:52:46,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:52:46,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-12-07 12:52:46,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1125, Invalid=3431, Unknown=0, NotChecked=0, Total=4556 [2019-12-07 12:52:46,666 INFO L87 Difference]: Start difference. First operand 6980 states and 7072 transitions. Second operand 68 states. [2019-12-07 12:52:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:52:47,195 INFO L93 Difference]: Finished difference Result 7210 states and 7303 transitions. [2019-12-07 12:52:47,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-12-07 12:52:47,196 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 374 [2019-12-07 12:52:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:52:47,196 INFO L225 Difference]: With dead ends: 7210 [2019-12-07 12:52:47,196 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 12:52:47,203 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 682 SyntacticMatches, 65 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2790 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3269, Invalid=6631, Unknown=0, NotChecked=0, Total=9900 [2019-12-07 12:52:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 12:52:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 12:52:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 12:52:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:52:47,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 374 [2019-12-07 12:52:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:52:47,204 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:52:47,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-12-07 12:52:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:52:47,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 12:52:47,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:52:47,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 12:52:47,828 WARN L192 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 14 [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 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 12:52:47,830 INFO L246 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,830 INFO L246 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L246 CegarLoopResult]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L249 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2019-12-07 12:52:47,831 INFO L246 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L246 CegarLoopResult]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L246 CegarLoopResult]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 12:52:47,831 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 12:52:47,831 INFO L246 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L246 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2019-12-07 12:52:47,831 INFO L249 CegarLoopResult]: At program point L24(lines 24 35) the Hoare annotation is: true [2019-12-07 12:52:47,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:52:47 BoogieIcfgContainer [2019-12-07 12:52:47,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:52:47,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:52:47,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:52:47,837 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:52:47,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:33" (3/4) ... [2019-12-07 12:52:47,840 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 12:52:47,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2019-12-07 12:52:47,846 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 12:52:47,846 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 12:52:47,872 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d160fe25-f012-4231-9c7e-3e8bbdf94c61/bin/utaipan/witness.graphml [2019-12-07 12:52:47,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:52:47,873 INFO L168 Benchmark]: Toolchain (without parser) took 195178.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 943.5 MB in the beginning and 923.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 190.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:52:47,873 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:52:47,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:52:47,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:52:47,873 INFO L168 Benchmark]: Boogie Preprocessor took 10.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:52:47,873 INFO L168 Benchmark]: RCFGBuilder took 159.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:52:47,873 INFO L168 Benchmark]: TraceAbstraction took 194780.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 37.7 MB). Free memory was 1.1 GB in the beginning and 932.1 MB in the end (delta: 178.4 MB). Peak memory consumption was 216.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:52:47,874 INFO L168 Benchmark]: Witness Printer took 34.87 ms. Allocated memory is still 1.2 GB. Free memory was 932.1 MB in the beginning and 923.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:52:47,874 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 159.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 194780.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 37.7 MB). Free memory was 1.1 GB in the beginning and 932.1 MB in the end (delta: 178.4 MB). Peak memory consumption was 216.1 MB. Max. memory is 11.5 GB. * Witness Printer took 34.87 ms. Allocated memory is still 1.2 GB. Free memory was 932.1 MB in the beginning and 923.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 194.3s, OverallIterations: 14, TraceHistogramMax: 47, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 456 SDtfs, 6766 SDslu, 3031 SDs, 0 SdLazy, 2784 SolverSat, 1480 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3216 GetRequests, 2297 SyntacticMatches, 151 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29119 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6980occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 159 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 98 PreInvPairs, 99 NumberOfFragments, 29 HoareAnnotationTreeSize, 98 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 2546 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 184.6s InterpolantComputationTime, 2729 NumberOfCodeBlocks, 2724 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 4044 ConstructedInterpolants, 0 QuantifiedInterpolants, 3108710 SizeOfPredicates, 127 NumberOfNonLiveVariables, 2382 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 36 InterpolantComputations, 4 PerfectInterpolantSequences, 19651/48848 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...