./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0564e568992a96ba006237c1af458e049de52506 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:18:18,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:18:18,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:18:18,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:18:18,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:18:18,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:18:18,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:18:18,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:18:18,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:18:18,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:18:18,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:18:18,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:18:18,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:18:18,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:18:18,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:18:18,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:18:18,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:18:18,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:18:18,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:18:18,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:18:18,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:18:18,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:18:18,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:18:18,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:18:18,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:18:18,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:18:18,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:18:18,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:18:18,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:18:18,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:18:18,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:18:18,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:18:18,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:18:18,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:18:18,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:18:18,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:18:18,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:18:18,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:18:18,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:18:18,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:18:18,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:18:18,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-16 00:18:18,444 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:18:18,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:18:18,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:18:18,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:18:18,446 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:18:18,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:18:18,447 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:18:18,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:18:18,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:18:18,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:18:18,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:18:18,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:18:18,449 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-16 00:18:18,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:18:18,449 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:18:18,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:18:18,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:18:18,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:18:18,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:18:18,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:18:18,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:18:18,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:18:18,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:18:18,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:18:18,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:18:18,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:18:18,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:18:18,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer 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 -> Automizer 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 -> 0564e568992a96ba006237c1af458e049de52506 [2019-11-16 00:18:18,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:18:18,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:18:18,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:18:18,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:18:18,493 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:18:18,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-16 00:18:18,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/data/e897ae3e0/6b1f466e04ab48e18280fd1acce7c36d/FLAG617aa0495 [2019-11-16 00:18:18,982 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:18:18,983 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-16 00:18:18,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/data/e897ae3e0/6b1f466e04ab48e18280fd1acce7c36d/FLAG617aa0495 [2019-11-16 00:18:19,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/data/e897ae3e0/6b1f466e04ab48e18280fd1acce7c36d [2019-11-16 00:18:19,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:18:19,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:18:19,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:18:19,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:18:19,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:18:19,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff8676e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19, skipping insertion in model container [2019-11-16 00:18:19,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,027 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:18:19,047 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:18:19,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:18:19,183 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:18:19,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:18:19,274 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:18:19,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19 WrapperNode [2019-11-16 00:18:19,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:18:19,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:18:19,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:18:19,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:18:19,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:18:19,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:18:19,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:18:19,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:18:19,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... [2019-11-16 00:18:19,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:18:19,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:18:19,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:18:19,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:18:19,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/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 [2019-11-16 00:18:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:18:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:18:19,595 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:18:19,595 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-16 00:18:19,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:19 BoogieIcfgContainer [2019-11-16 00:18:19,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:18:19,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:18:19,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:18:19,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:18:19,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:18:19" (1/3) ... [2019-11-16 00:18:19,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e36a8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:19, skipping insertion in model container [2019-11-16 00:18:19,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:19" (2/3) ... [2019-11-16 00:18:19,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e36a8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:19, skipping insertion in model container [2019-11-16 00:18:19,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:19" (3/3) ... [2019-11-16 00:18:19,605 INFO L109 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-16 00:18:19,614 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:18:19,619 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-16 00:18:19,628 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-16 00:18:19,650 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:18:19,650 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:18:19,650 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:18:19,650 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:18:19,651 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:18:19,651 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:18:19,651 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:18:19,651 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:18:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-16 00:18:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-16 00:18:19,671 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:19,672 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-16 00:18:19,674 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:19,679 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-16 00:18:19,687 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:19,688 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603697004] [2019-11-16 00:18:19,688 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:19,688 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:19,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:19,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603697004] [2019-11-16 00:18:19,830 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:18:19,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-16 00:18:19,831 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407266299] [2019-11-16 00:18:19,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:18:19,837 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:19,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:18:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:18:19,853 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-16 00:18:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:19,917 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-16 00:18:19,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:18:19,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-16 00:18:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:19,929 INFO L225 Difference]: With dead ends: 26 [2019-11-16 00:18:19,929 INFO L226 Difference]: Without dead ends: 13 [2019-11-16 00:18:19,934 INFO L600 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 [2019-11-16 00:18:19,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-16 00:18:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-16 00:18:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-16 00:18:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-16 00:18:19,963 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-16 00:18:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:19,964 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-16 00:18:19,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:18:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-16 00:18:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-16 00:18:19,965 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:19,965 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-16 00:18:19,965 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-16 00:18:19,966 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:19,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026369619] [2019-11-16 00:18:19,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:19,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:19,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:20,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026369619] [2019-11-16 00:18:20,010 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:18:20,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:18:20,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676424852] [2019-11-16 00:18:20,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:18:20,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:20,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:18:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:18:20,012 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-16 00:18:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:20,082 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-16 00:18:20,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:18:20,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-16 00:18:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:20,083 INFO L225 Difference]: With dead ends: 17 [2019-11-16 00:18:20,083 INFO L226 Difference]: Without dead ends: 15 [2019-11-16 00:18:20,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:18:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-16 00:18:20,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-16 00:18:20,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-16 00:18:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-16 00:18:20,088 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2019-11-16 00:18:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:20,088 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-16 00:18:20,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:18:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-16 00:18:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-16 00:18:20,089 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:20,089 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-16 00:18:20,089 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-16 00:18:20,090 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:20,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129691233] [2019-11-16 00:18:20,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:20,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:20,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:20,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129691233] [2019-11-16 00:18:20,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:18:20,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-16 00:18:20,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511161148] [2019-11-16 00:18:20,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:18:20,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:18:20,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:18:20,113 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2019-11-16 00:18:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:20,134 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-16 00:18:20,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:18:20,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-16 00:18:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:20,135 INFO L225 Difference]: With dead ends: 14 [2019-11-16 00:18:20,135 INFO L226 Difference]: Without dead ends: 13 [2019-11-16 00:18:20,136 INFO L600 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 [2019-11-16 00:18:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-16 00:18:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-16 00:18:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-16 00:18:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-16 00:18:20,139 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2019-11-16 00:18:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:20,139 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-16 00:18:20,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:18:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-16 00:18:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-16 00:18:20,140 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:20,140 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:18:20,141 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-16 00:18:20,141 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:20,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805756006] [2019-11-16 00:18:20,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:20,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:20,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:20,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805756006] [2019-11-16 00:18:20,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620339040] [2019-11-16 00:18:20,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/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 [2019-11-16 00:18:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:20,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:18:20,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:18:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:20,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:18:20,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-11-16 00:18:20,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605914443] [2019-11-16 00:18:20,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:18:20,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:20,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:18:20,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:18:20,367 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-11-16 00:18:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:20,451 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-16 00:18:20,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:18:20,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-16 00:18:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:20,452 INFO L225 Difference]: With dead ends: 14 [2019-11-16 00:18:20,452 INFO L226 Difference]: Without dead ends: 13 [2019-11-16 00:18:20,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:18:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-16 00:18:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-16 00:18:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-16 00:18:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-16 00:18:20,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2019-11-16 00:18:20,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:20,461 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-16 00:18:20,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:18:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-16 00:18:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-16 00:18:20,462 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:20,462 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:18:20,665 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:18:20,668 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2019-11-16 00:18:20,670 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:20,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040374593] [2019-11-16 00:18:20,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:20,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:20,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:20,731 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040374593] [2019-11-16 00:18:20,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598704675] [2019-11-16 00:18:20,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/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 [2019-11-16 00:18:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:20,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:18:20,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:18:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:20,799 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:18:20,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2019-11-16 00:18:20,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642967085] [2019-11-16 00:18:20,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:18:20,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:20,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:18:20,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:18:20,801 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-11-16 00:18:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:20,863 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-16 00:18:20,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:18:20,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-16 00:18:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:20,864 INFO L225 Difference]: With dead ends: 12 [2019-11-16 00:18:20,864 INFO L226 Difference]: Without dead ends: 11 [2019-11-16 00:18:20,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:18:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-16 00:18:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-16 00:18:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-16 00:18:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-16 00:18:20,868 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-11-16 00:18:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:20,868 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-16 00:18:20,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:18:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-16 00:18:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:18:20,869 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:20,869 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-16 00:18:21,076 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:18:21,077 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:21,077 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-16 00:18:21,077 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:21,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764541179] [2019-11-16 00:18:21,078 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:21,078 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:21,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:21,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764541179] [2019-11-16 00:18:21,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540697987] [2019-11-16 00:18:21,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/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 [2019-11-16 00:18:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:21,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-16 00:18:21,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:18:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:21,160 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:18:21,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-16 00:18:21,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485180228] [2019-11-16 00:18:21,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:18:21,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:18:21,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:18:21,162 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-11-16 00:18:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:21,187 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-16 00:18:21,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:18:21,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-16 00:18:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:21,187 INFO L225 Difference]: With dead ends: 18 [2019-11-16 00:18:21,188 INFO L226 Difference]: Without dead ends: 17 [2019-11-16 00:18:21,188 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:18:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-16 00:18:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-16 00:18:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-16 00:18:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-16 00:18:21,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2019-11-16 00:18:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:21,191 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-16 00:18:21,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:18:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-16 00:18:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-16 00:18:21,191 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:21,192 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-16 00:18:21,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:18:21,396 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-16 00:18:21,397 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:21,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988020223] [2019-11-16 00:18:21,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:21,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:21,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:21,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988020223] [2019-11-16 00:18:21,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567487835] [2019-11-16 00:18:21,459 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/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 [2019-11-16 00:18:21,500 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:18:21,500 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:18:21,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:18:21,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:18:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:21,515 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:18:21,515 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-16 00:18:21,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352559016] [2019-11-16 00:18:21,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:18:21,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:21,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:18:21,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:18:21,518 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2019-11-16 00:18:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:21,554 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-16 00:18:21,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:18:21,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-16 00:18:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:21,555 INFO L225 Difference]: With dead ends: 23 [2019-11-16 00:18:21,556 INFO L226 Difference]: Without dead ends: 22 [2019-11-16 00:18:21,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:18:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-16 00:18:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-11-16 00:18:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-16 00:18:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-11-16 00:18:21,560 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2019-11-16 00:18:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:21,560 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-11-16 00:18:21,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:18:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-11-16 00:18:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:18:21,561 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:18:21,561 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-16 00:18:21,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:18:21,768 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-16 00:18:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:18:21,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-16 00:18:21,769 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:18:21,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076403081] [2019-11-16 00:18:21,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:21,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:18:21,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:18:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:18:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:21,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076403081] [2019-11-16 00:18:21,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463729596] [2019-11-16 00:18:21,852 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/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 [2019-11-16 00:18:21,879 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-16 00:18:21,879 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:18:21,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:18:21,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:18:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:18:22,069 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:18:22,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 11 [2019-11-16 00:18:22,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099109245] [2019-11-16 00:18:22,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-16 00:18:22,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:18:22,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-16 00:18:22,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:18:22,071 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2019-11-16 00:18:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:18:22,553 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-11-16 00:18:22,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:18:22,553 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-11-16 00:18:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:18:22,554 INFO L225 Difference]: With dead ends: 28 [2019-11-16 00:18:22,554 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:18:22,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2019-11-16 00:18:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:18:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:18:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:18:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:18:22,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-16 00:18:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:18:22,556 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:18:22,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-16 00:18:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:18:22,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:18:22,764 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:18:22,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-16 00:18:22,901 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-16 00:18:22,901 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-16 00:18:22,902 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-16 00:18:22,902 INFO L446 ceAbstractionStarter]: At program point L21(lines 13 22) the Hoare annotation is: true [2019-11-16 00:18:22,902 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-16 00:18:22,902 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-16 00:18:22,903 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 24 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~x~0 2147483624) .cse0 (<= ULTIMATE.start_main_~y~0 24)) (and .cse0 (<= ULTIMATE.start_main_~y~0 (+ (div (+ (- ULTIMATE.start_main_~x~0) 2147483625) 2) 1)) (<= ULTIMATE.start_main_~y~0 2147483647)) (and (<= 23 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 23) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483624))) (and (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) 2147483625) (<= ULTIMATE.start_main_~y~0 25) .cse0))) [2019-11-16 00:18:22,903 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2019-11-16 00:18:22,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-16 00:18:22,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-16 00:18:22,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-16 00:18:22,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-16 00:18:22,903 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-16 00:18:22,903 INFO L443 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-16 00:18:22,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:18:22 BoogieIcfgContainer [2019-11-16 00:18:22,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:18:22,921 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:18:22,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:18:22,922 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:18:22,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:19" (3/4) ... [2019-11-16 00:18:22,929 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:18:22,940 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-16 00:18:22,941 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-16 00:18:22,977 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_db0b680b-cb9b-4362-821d-8f8ea42fa590/bin/uautomizer/witness.graphml [2019-11-16 00:18:22,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:18:22,980 INFO L168 Benchmark]: Toolchain (without parser) took 3967.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 948.8 MB in the beginning and 920.1 MB in the end (delta: 28.7 MB). Peak memory consumption was 170.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:18:22,980 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:18:22,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:18:22,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.34 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. [2019-11-16 00:18:22,982 INFO L168 Benchmark]: Boogie Preprocessor took 14.70 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. [2019-11-16 00:18:22,982 INFO L168 Benchmark]: RCFGBuilder took 280.92 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:18:22,983 INFO L168 Benchmark]: TraceAbstraction took 3323.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 920.1 MB in the end (delta: 198.3 MB). Peak memory consumption was 198.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:18:22,983 INFO L168 Benchmark]: Witness Printer took 56.46 ms. Allocated memory is still 1.2 GB. Free memory is still 920.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:18:22,985 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.34 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 14.70 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 280.92 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3323.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 920.1 MB in the end (delta: 198.3 MB). Peak memory consumption was 198.3 MB. Max. memory is 11.5 GB. * Witness Printer took 56.46 ms. Allocated memory is still 1.2 GB. Free memory is still 920.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((x <= 2147483624 && 24 <= y) && y <= 24) || ((24 <= y && y <= (-x + 2147483625) / 2 + 1) && y <= 2147483647)) || ((23 <= y && y <= 23) && x <= y + 2147483624)) || ((x + y <= 2147483625 && y <= 25) && 24 <= y) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 26 SDtfs, 69 SDslu, 10 SDs, 0 SdLazy, 217 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=7, 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, 8 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 53 HoareAnnotationTreeSize, 2 FomulaSimplifications, 64 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 124 ConstructedInterpolants, 3 QuantifiedInterpolants, 6367 SizeOfPredicates, 2 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 5/98 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...