./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/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 94b61e96441ca10668b436b4ef10dfd9464f0863 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:36:52,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:36:52,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:36:52,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:36:52,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:36:52,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:36:52,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:36:52,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:36:52,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:36:52,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:36:52,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:36:52,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:36:52,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:36:52,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:36:52,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:36:52,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:36:52,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:36:52,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:36:52,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:36:52,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:36:52,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:36:52,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:36:52,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:36:52,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:36:52,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:36:52,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:36:52,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:36:52,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:36:52,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:36:52,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:36:52,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:36:52,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:36:52,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:36:52,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:36:52,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:36:52,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:36:52,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:36:52,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:36:52,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:36:52,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:36:52,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:36:52,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:36:52,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:36:52,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:36:52,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:36:52,515 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:36:52,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:36:52,516 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:36:52,516 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:36:52,516 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:36:52,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:36:52,517 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:36:52,517 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:36:52,517 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:36:52,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:36:52,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:36:52,518 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:36:52,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:36:52,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:36:52,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:36:52,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:36:52,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:36:52,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:36:52,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:36:52,521 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:36:52,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:36:52,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:36:52,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:36:52,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:36:52,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:36:52,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:36:52,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:36:52,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:36:52,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:36:52,524 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:36:52,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:36:52,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:36:52,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:36:52,525 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_6c342f51-7b4d-411d-97e7-d30d804f21e9/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 -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2019-11-26 02:36:52,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:36:52,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:36:52,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:36:52,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:36:52,682 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:36:52,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-26 02:36:52,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/data/dc92ae812/86790f525cd041ed94fdc56835eab484/FLAGfb8c0d1d4 [2019-11-26 02:36:53,151 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:36:53,151 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-26 02:36:53,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/data/dc92ae812/86790f525cd041ed94fdc56835eab484/FLAGfb8c0d1d4 [2019-11-26 02:36:53,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/data/dc92ae812/86790f525cd041ed94fdc56835eab484 [2019-11-26 02:36:53,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:36:53,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:36:53,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:53,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:36:53,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:36:53,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227c93b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53, skipping insertion in model container [2019-11-26 02:36:53,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:36:53,212 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:36:53,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:53,355 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:36:53,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:53,449 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:36:53,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53 WrapperNode [2019-11-26 02:36:53,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:53,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:53,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:36:53,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:36:53,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:53,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:36:53,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:36:53,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:36:53,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... [2019-11-26 02:36:53,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:36:53,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:36:53,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:36:53,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:36:53,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:36:53,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:36:53,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:36:53,833 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:36:53,833 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:36:53,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:53 BoogieIcfgContainer [2019-11-26 02:36:53,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:36:53,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:36:53,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:36:53,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:36:53,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:36:53" (1/3) ... [2019-11-26 02:36:53,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f35d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:53, skipping insertion in model container [2019-11-26 02:36:53,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:53" (2/3) ... [2019-11-26 02:36:53,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f35d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:53, skipping insertion in model container [2019-11-26 02:36:53,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:53" (3/3) ... [2019-11-26 02:36:53,841 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-11-26 02:36:53,863 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:36:53,869 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:36:53,877 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:36:53,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:36:53,895 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:36:53,895 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:36:53,895 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:36:53,895 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:36:53,895 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:36:53,895 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:36:53,896 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:36:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:36:53,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:36:53,913 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:53,914 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:36:53,914 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:53,920 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-26 02:36:53,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:53,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453149072] [2019-11-26 02:36:53,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:54,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453149072] [2019-11-26 02:36:54,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:54,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:36:54,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873602238] [2019-11-26 02:36:54,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:36:54,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:54,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:36:54,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,055 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-26 02:36:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:54,102 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-26 02:36:54,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:36:54,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:36:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:54,109 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:36:54,109 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:36:54,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:36:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-26 02:36:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:36:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:36:54,136 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-26 02:36:54,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:54,137 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:36:54,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:36:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:36:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:36:54,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:54,137 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:36:54,138 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:54,138 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-26 02:36:54,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:54,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161357339] [2019-11-26 02:36:54,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:54,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161357339] [2019-11-26 02:36:54,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:54,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:36:54,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600108889] [2019-11-26 02:36:54,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:36:54,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:54,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:36:54,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,159 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-26 02:36:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:54,175 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-26 02:36:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:36:54,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:36:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:54,179 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:36:54,179 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:36:54,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:36:54,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:36:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:36:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-26 02:36:54,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-26 02:36:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:54,182 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-26 02:36:54,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:36:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-26 02:36:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:36:54,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:54,183 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:36:54,183 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-26 02:36:54,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:54,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57621332] [2019-11-26 02:36:54,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:54,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57621332] [2019-11-26 02:36:54,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:54,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:36:54,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248026776] [2019-11-26 02:36:54,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:36:54,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:54,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:36:54,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,215 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-11-26 02:36:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:54,230 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-26 02:36:54,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:36:54,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:36:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:54,231 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:36:54,231 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:36:54,232 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:36:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-26 02:36:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:36:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-26 02:36:54,235 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-11-26 02:36:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:54,236 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-26 02:36:54,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:36:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-26 02:36:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:36:54,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:54,236 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:36:54,237 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-26 02:36:54,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:54,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335203396] [2019-11-26 02:36:54,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:54,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335203396] [2019-11-26 02:36:54,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:54,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:36:54,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599860794] [2019-11-26 02:36:54,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:36:54,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:54,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:36:54,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,258 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-26 02:36:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:54,271 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-26 02:36:54,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:36:54,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:36:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:54,272 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:36:54,272 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:36:54,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:36:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:36:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:36:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:36:54,276 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-26 02:36:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:54,276 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:36:54,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:36:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:36:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:36:54,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:54,277 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:54,277 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:54,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:54,277 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-26 02:36:54,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:54,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087358101] [2019-11-26 02:36:54,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:54,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087358101] [2019-11-26 02:36:54,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355247152] [2019-11-26 02:36:54,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:54,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:36:54,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:54,373 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:54,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151948253] [2019-11-26 02:36:54,418 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:36:54,418 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:36:54,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:36:54,429 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:36:54,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:36:54,626 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:36:54,983 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:36:54,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:36:54,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2019-11-26 02:36:54,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280113915] [2019-11-26 02:36:54,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:36:54,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:54,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:36:54,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:36:54,985 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2019-11-26 02:36:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:55,044 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-11-26 02:36:55,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:36:55,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-26 02:36:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:55,046 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:36:55,046 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:36:55,047 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:36:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:36:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-26 02:36:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:36:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-11-26 02:36:55,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 8 [2019-11-26 02:36:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:55,051 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-11-26 02:36:55,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:36:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-11-26 02:36:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:36:55,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:55,052 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-26 02:36:55,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:55,258 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-26 02:36:55,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:55,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165313548] [2019-11-26 02:36:55,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:55,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165313548] [2019-11-26 02:36:55,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342959952] [2019-11-26 02:36:55,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:55,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:36:55,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:55,331 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:55,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1805285964] [2019-11-26 02:36:55,359 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:36:55,359 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:36:55,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:36:55,360 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:36:55,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:36:55,429 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:36:55,641 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:36:55,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:36:55,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2019-11-26 02:36:55,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019551752] [2019-11-26 02:36:55,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:36:55,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:55,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:36:55,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:36:55,643 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2019-11-26 02:36:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:55,673 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-11-26 02:36:55,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:36:55,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-26 02:36:55,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:55,674 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:36:55,674 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:36:55,675 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:36:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:36:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-26 02:36:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:36:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-26 02:36:55,679 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 10 [2019-11-26 02:36:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:55,679 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-26 02:36:55,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:36:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-26 02:36:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:36:55,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:55,680 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-11-26 02:36:55,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:55,881 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:55,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 2 times [2019-11-26 02:36:55,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:55,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197747890] [2019-11-26 02:36:55,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:55,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197747890] [2019-11-26 02:36:55,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347562548] [2019-11-26 02:36:55,940 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:55,970 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:36:55,970 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:36:55,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:36:55,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:56,013 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:56,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860227626] [2019-11-26 02:36:56,093 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:36:56,093 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:36:56,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:36:56,094 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:36:56,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:36:56,174 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:36:56,395 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:36:56,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:36:56,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2019-11-26 02:36:56,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315689364] [2019-11-26 02:36:56,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:36:56,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:56,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:36:56,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:36:56,397 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 12 states. [2019-11-26 02:36:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:56,489 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2019-11-26 02:36:56,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:36:56,490 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2019-11-26 02:36:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:56,491 INFO L225 Difference]: With dead ends: 61 [2019-11-26 02:36:56,491 INFO L226 Difference]: Without dead ends: 60 [2019-11-26 02:36:56,492 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:36:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-26 02:36:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2019-11-26 02:36:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-26 02:36:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2019-11-26 02:36:56,499 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 23 [2019-11-26 02:36:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:56,501 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2019-11-26 02:36:56,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:36:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2019-11-26 02:36:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:36:56,503 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:56,503 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-26 02:36:56,705 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:56,706 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:56,706 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2019-11-26 02:36:56,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:56,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46720025] [2019-11-26 02:36:56,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:56,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46720025] [2019-11-26 02:36:56,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538198045] [2019-11-26 02:36:56,767 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:56,797 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:36:56,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:36:56,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:36:56,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:56,831 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:56,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1547257388] [2019-11-26 02:36:56,905 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:36:56,906 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:36:56,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:36:56,906 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:36:56,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:36:56,968 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:36:57,117 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:36:57,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:36:57,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2019-11-26 02:36:57,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491328445] [2019-11-26 02:36:57,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:36:57,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:57,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:36:57,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:36:57,119 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 12 states. [2019-11-26 02:36:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:57,170 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-11-26 02:36:57,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:36:57,171 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2019-11-26 02:36:57,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:57,172 INFO L225 Difference]: With dead ends: 58 [2019-11-26 02:36:57,172 INFO L226 Difference]: Without dead ends: 57 [2019-11-26 02:36:57,172 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:36:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-26 02:36:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-11-26 02:36:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-26 02:36:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-26 02:36:57,180 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 25 [2019-11-26 02:36:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:57,180 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-26 02:36:57,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:36:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-26 02:36:57,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-26 02:36:57,182 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:57,182 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-11-26 02:36:57,382 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:57,383 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:57,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:57,383 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 3 times [2019-11-26 02:36:57,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:57,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932867312] [2019-11-26 02:36:57,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:57,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932867312] [2019-11-26 02:36:57,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904317442] [2019-11-26 02:36:57,542 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:57,579 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-26 02:36:57,579 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:36:57,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:36:57,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:57,704 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:57,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861332703] [2019-11-26 02:36:57,973 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:36:57,973 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:36:57,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:36:57,974 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:36:57,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:36:58,027 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:36:58,221 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:36:58,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:36:58,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2019-11-26 02:36:58,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825877703] [2019-11-26 02:36:58,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-26 02:36:58,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:58,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-26 02:36:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2019-11-26 02:36:58,224 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 24 states. [2019-11-26 02:36:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:58,346 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2019-11-26 02:36:58,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-26 02:36:58,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2019-11-26 02:36:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:58,348 INFO L225 Difference]: With dead ends: 127 [2019-11-26 02:36:58,348 INFO L226 Difference]: Without dead ends: 126 [2019-11-26 02:36:58,349 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 131 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2019-11-26 02:36:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-26 02:36:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 115. [2019-11-26 02:36:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-26 02:36:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2019-11-26 02:36:58,360 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 53 [2019-11-26 02:36:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:58,360 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2019-11-26 02:36:58,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-26 02:36:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2019-11-26 02:36:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-26 02:36:58,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:58,362 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-26 02:36:58,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:58,565 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:58,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:58,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2019-11-26 02:36:58,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:58,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485752239] [2019-11-26 02:36:58,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:58,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485752239] [2019-11-26 02:36:58,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494679009] [2019-11-26 02:36:58,754 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:58,785 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-26 02:36:58,785 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:36:58,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:36:58,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:58,883 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:59,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432392581] [2019-11-26 02:36:59,099 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:36:59,099 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:36:59,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:36:59,100 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:36:59,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:36:59,154 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:36:59,315 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:36:59,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:36:59,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2019-11-26 02:36:59,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798191339] [2019-11-26 02:36:59,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-26 02:36:59,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-26 02:36:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2019-11-26 02:36:59,317 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 24 states. [2019-11-26 02:36:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:59,409 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2019-11-26 02:36:59,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-26 02:36:59,409 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2019-11-26 02:36:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:59,410 INFO L225 Difference]: With dead ends: 116 [2019-11-26 02:36:59,410 INFO L226 Difference]: Without dead ends: 115 [2019-11-26 02:36:59,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 138 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2019-11-26 02:36:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-11-26 02:36:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-11-26 02:36:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-26 02:36:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2019-11-26 02:36:59,419 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 55 [2019-11-26 02:36:59,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:59,423 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2019-11-26 02:36:59,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-26 02:36:59,423 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2019-11-26 02:36:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-26 02:36:59,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:59,431 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-26 02:36:59,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:59,634 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:59,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 4 times [2019-11-26 02:36:59,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:59,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314997157] [2019-11-26 02:36:59,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:36:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:36:59,742 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:36:59,746 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:36:59,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:36:59 BoogieIcfgContainer [2019-11-26 02:36:59,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:36:59,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:36:59,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:36:59,796 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:36:59,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:53" (3/4) ... [2019-11-26 02:36:59,799 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:36:59,866 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6c342f51-7b4d-411d-97e7-d30d804f21e9/bin/utaipan/witness.graphml [2019-11-26 02:36:59,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:36:59,873 INFO L168 Benchmark]: Toolchain (without parser) took 6693.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 946.1 MB in the beginning and 952.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 202.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:59,873 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:36:59,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:59,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.07 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. [2019-11-26 02:36:59,878 INFO L168 Benchmark]: Boogie Preprocessor took 16.67 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. [2019-11-26 02:36:59,879 INFO L168 Benchmark]: RCFGBuilder took 340.44 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:59,879 INFO L168 Benchmark]: TraceAbstraction took 5960.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 955.5 MB in the end (delta: 153.8 MB). Peak memory consumption was 226.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:59,880 INFO L168 Benchmark]: Witness Printer took 74.85 ms. Allocated memory is still 1.2 GB. Free memory was 955.5 MB in the beginning and 952.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:59,882 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.07 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 16.67 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 340.44 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5960.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 955.5 MB in the end (delta: 153.8 MB). Peak memory consumption was 226.7 MB. Max. memory is 11.5 GB. * Witness Printer took 74.85 ms. Allocated memory is still 1.2 GB. Free memory was 955.5 MB in the beginning and 952.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Result: UNSAFE, OverallTime: 5.8s, OverallIterations: 11, TraceHistogramMax: 20, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 156 SDslu, 234 SDs, 0 SdLazy, 233 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 417 SyntacticMatches, 30 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 75072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 0/1800 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 incorrect! Received shutdown request...