./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f1b097c6afa8c7725240a0195cb226f841ae6ea .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f1b097c6afa8c7725240a0195cb226f841ae6ea ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:58:34,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:58:34,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:58:34,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:58:34,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:58:34,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:58:34,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:58:34,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:58:34,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:58:34,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:58:34,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:58:34,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:58:34,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:58:34,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:58:34,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:58:34,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:58:34,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:58:34,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:58:34,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:58:34,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:58:34,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:58:34,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:58:34,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:58:34,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:58:34,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:58:34,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:58:34,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:58:34,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:58:34,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:58:34,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:58:34,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:58:34,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:58:34,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:58:34,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:58:34,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:58:34,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:58:34,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:58:34,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:58:34,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:58:34,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:58:34,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:58:34,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:58:34,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:58:34,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:58:34,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:58:34,638 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:58:34,639 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:58:34,639 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:58:34,639 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:58:34,639 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:58:34,640 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:58:34,640 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:58:34,640 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:58:34,640 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:58:34,640 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:58:34,640 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:58:34,640 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:58:34,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:58:34,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:58:34,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:58:34,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:58:34,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:58:34,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:58:34,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:58:34,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:58:34,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:58:34,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:58:34,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f1b097c6afa8c7725240a0195cb226f841ae6ea [2020-12-09 09:58:34,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:58:34,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:58:34,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:58:34,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:58:34,844 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:58:34,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-09 09:58:34,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/9c18894d2/4c3c252caf6d4bd58154cfd001185eee/FLAGa51bbcc79 [2020-12-09 09:58:35,246 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:58:35,246 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-09 09:58:35,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/9c18894d2/4c3c252caf6d4bd58154cfd001185eee/FLAGa51bbcc79 [2020-12-09 09:58:35,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/9c18894d2/4c3c252caf6d4bd58154cfd001185eee [2020-12-09 09:58:35,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:58:35,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:58:35,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:58:35,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:58:35,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:58:35,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ca876c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35, skipping insertion in model container [2020-12-09 09:58:35,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:58:35,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:58:35,400 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533] [2020-12-09 09:58:35,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:58:35,422 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:58:35,434 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533] [2020-12-09 09:58:35,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:58:35,449 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:58:35,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35 WrapperNode [2020-12-09 09:58:35,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:58:35,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:58:35,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:58:35,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:58:35,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:58:35,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:58:35,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:58:35,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:58:35,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... [2020-12-09 09:58:35,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:58:35,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:58:35,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:58:35,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:58:35,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/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 [2020-12-09 09:58:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:58:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:58:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:58:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:58:35,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:58:35,754 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-09 09:58:35,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:58:35 BoogieIcfgContainer [2020-12-09 09:58:35,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:58:35,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:58:35,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:58:35,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:58:35,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:58:35" (1/3) ... [2020-12-09 09:58:35,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7928cbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:58:35, skipping insertion in model container [2020-12-09 09:58:35,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:58:35" (2/3) ... [2020-12-09 09:58:35,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7928cbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:58:35, skipping insertion in model container [2020-12-09 09:58:35,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:58:35" (3/3) ... [2020-12-09 09:58:35,764 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2020-12-09 09:58:35,777 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:58:35,779 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 09:58:35,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 09:58:35,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:58:35,806 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:58:35,806 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:58:35,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:58:35,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:58:35,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:58:35,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:58:35,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:58:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-09 09:58:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 09:58:35,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:58:35,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 09:58:35,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:58:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:58:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2020-12-09 09:58:35,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:58:35,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264874460] [2020-12-09 09:58:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:58:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:58:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:36,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264874460] [2020-12-09 09:58:36,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:58:36,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:58:36,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019024149] [2020-12-09 09:58:36,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:58:36,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:58:36,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:58:36,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:58:36,023 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-12-09 09:58:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:58:36,115 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2020-12-09 09:58:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:58:36,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 09:58:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:58:36,122 INFO L225 Difference]: With dead ends: 78 [2020-12-09 09:58:36,123 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 09:58:36,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:58:36,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 09:58:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-12-09 09:58:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 09:58:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-12-09 09:58:36,149 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2020-12-09 09:58:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:58:36,150 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-12-09 09:58:36,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:58:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-12-09 09:58:36,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 09:58:36,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:58:36,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 09:58:36,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:58:36,151 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:58:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:58:36,151 INFO L82 PathProgramCache]: Analyzing trace with hash -469863374, now seen corresponding path program 1 times [2020-12-09 09:58:36,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:58:36,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42904777] [2020-12-09 09:58:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:58:36,163 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:58:36,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32483427] [2020-12-09 09:58:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/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 [2020-12-09 09:58:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:58:36,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 09:58:36,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:58:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:36,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:58:36,314 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:58:36,314 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:58:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:36,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42904777] [2020-12-09 09:58:36,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:58:36,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32483427] [2020-12-09 09:58:36,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:58:36,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 09:58:36,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86786798] [2020-12-09 09:58:36,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 09:58:36,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:58:36,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 09:58:36,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 09:58:36,333 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 10 states. [2020-12-09 09:58:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:58:36,476 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-12-09 09:58:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 09:58:36,477 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 6 [2020-12-09 09:58:36,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:58:36,477 INFO L225 Difference]: With dead ends: 47 [2020-12-09 09:58:36,478 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 09:58:36,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-12-09 09:58:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 09:58:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-12-09 09:58:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 09:58:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-09 09:58:36,486 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 6 [2020-12-09 09:58:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:58:36,487 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-09 09:58:36,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 09:58:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-09 09:58:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:58:36,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:58:36,488 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:58:36,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 09:58:36,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:58:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:58:36,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1203127770, now seen corresponding path program 1 times [2020-12-09 09:58:36,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:58:36,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139298117] [2020-12-09 09:58:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:58:36,729 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:58:36,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626242153] [2020-12-09 09:58:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/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 [2020-12-09 09:58:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:58:36,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 09:58:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:58:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:36,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:58:36,968 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:58:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 09:58:36,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139298117] [2020-12-09 09:58:36,998 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:58:36,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626242153] [2020-12-09 09:58:36,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229831734] [2020-12-09 09:58:37,018 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 09:58:37,018 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:58:37,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:58:37,027 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:58:37,028 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:58:37,113 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 09:58:37,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 09:58:37,509 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:58:37,634 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-09 09:58:37,996 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2020-12-09 09:58:38,480 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:58:38,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 09:58:38,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-12-09 09:58:38,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893470300] [2020-12-09 09:58:38,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:58:38,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:58:38,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:58:38,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-09 09:58:38,482 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2020-12-09 09:58:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:58:38,620 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-09 09:58:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 09:58:38,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 09:58:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:58:38,621 INFO L225 Difference]: With dead ends: 46 [2020-12-09 09:58:38,621 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 09:58:38,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-12-09 09:58:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 09:58:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25. [2020-12-09 09:58:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 09:58:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-09 09:58:38,626 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 11 [2020-12-09 09:58:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:58:38,627 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-09 09:58:38,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:58:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-09 09:58:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 09:58:38,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:58:38,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 09:58:38,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:58:38,829 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:58:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:58:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1576664640, now seen corresponding path program 1 times [2020-12-09 09:58:38,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:58:38,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788598063] [2020-12-09 09:58:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:58:38,861 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:58:38,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468113327] [2020-12-09 09:58:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/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 [2020-12-09 09:58:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:58:38,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 09:58:38,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:58:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:38,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:58:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:47,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788598063] [2020-12-09 09:58:47,075 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:58:47,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468113327] [2020-12-09 09:58:47,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1629677280] [2020-12-09 09:58:47,077 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 09:58:47,077 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:58:47,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:58:47,081 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:58:47,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:58:47,105 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 09:58:47,112 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 09:58:47,484 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:58:47,633 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-12-09 09:58:48,027 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 87 [2020-12-09 09:58:48,461 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-09 09:58:48,614 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-12-09 09:58:48,679 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:58:48,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 09:58:48,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 09:58:48,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7400703] [2020-12-09 09:58:48,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 09:58:48,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:58:48,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 09:58:48,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=234, Unknown=4, NotChecked=0, Total=306 [2020-12-09 09:58:48,681 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 12 states. [2020-12-09 09:58:59,352 WARN L197 SmtUtils]: Spent 10.55 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 09:59:10,182 WARN L197 SmtUtils]: Spent 10.80 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 09:59:24,278 WARN L197 SmtUtils]: Spent 14.03 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 10:00:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:47,379 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-12-09 10:00:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 10:00:47,380 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-12-09 10:00:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:47,380 INFO L225 Difference]: With dead ends: 62 [2020-12-09 10:00:47,381 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 10:00:47,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 70.5s TimeCoverageRelationStatistics Valid=173, Invalid=516, Unknown=13, NotChecked=0, Total=702 [2020-12-09 10:00:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 10:00:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-09 10:00:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 10:00:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-12-09 10:00:47,386 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 15 [2020-12-09 10:00:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:47,386 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-12-09 10:00:47,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 10:00:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-12-09 10:00:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 10:00:47,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:47,387 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 10:00:47,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:00:47,589 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:47,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1309172917, now seen corresponding path program 2 times [2020-12-09 10:00:47,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:47,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90034333] [2020-12-09 10:00:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:47,602 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 10:00:47,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078443297] [2020-12-09 10:00:47,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/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 [2020-12-09 10:00:47,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 10:00:47,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 10:00:47,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 10:00:47,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:00:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 10:00:47,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:06,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90034333] [2020-12-09 10:01:06,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:06,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078443297] [2020-12-09 10:01:06,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 10:01:06,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595196875] [2020-12-09 10:01:06,636 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 10:01:06,636 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 10:01:06,636 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 10:01:06,636 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 10:01:06,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 10:01:06,679 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 10:01:06,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 10:01:06,979 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 10:01:07,144 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-12-09 10:01:07,540 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2020-12-09 10:01:14,646 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 103 [2020-12-09 10:01:15,070 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 99 [2020-12-09 10:01:15,235 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-12-09 10:01:15,407 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-09 10:01:20,329 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-09 10:01:20,460 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:01:20,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:20,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 10:01:20,461 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 10:01:20,461 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 10:01:20,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:20,677 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 10:01:20,677 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 10:01:20,705 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 10:01:20,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:01:20 BoogieIcfgContainer [2020-12-09 10:01:20,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:01:20,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:01:20,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:01:20,706 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:01:20,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:58:35" (3/4) ... [2020-12-09 10:01:20,710 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 10:01:20,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:01:20,712 INFO L168 Benchmark]: Toolchain (without parser) took 165448.02 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 64.2 MB in the beginning and 44.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:20,713 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 80.5 MB in the beginning and 80.5 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:01:20,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.75 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 77.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:20,714 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.70 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 75.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:20,714 INFO L168 Benchmark]: Boogie Preprocessor took 14.91 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 74.8 MB in the end (delta: 835.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:01:20,715 INFO L168 Benchmark]: RCFGBuilder took 266.25 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 55.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:20,716 INFO L168 Benchmark]: TraceAbstraction took 164947.52 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 55.5 MB in the beginning and 44.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:20,716 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 148.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:01:20,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 80.5 MB in the beginning and 80.5 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 185.75 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 77.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.70 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 75.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.91 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 74.8 MB in the end (delta: 835.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 266.25 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 55.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 164947.52 ms. Allocated memory was 100.7 MB in the beginning and 148.9 MB in the end (delta: 48.2 MB). Free memory was 55.5 MB in the beginning and 44.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 148.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int n; [L22] long long a, s, t; [L23] n = __VERIFIER_nondet_int() [L9] COND TRUE !cond [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 164.8s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 119.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 194 SDslu, 74 SDs, 0 SdLazy, 214 SolverSat, 177 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 57.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 71.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, 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, 4 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 6739 SizeOfPredicates, 15 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:01:22,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:01:22,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:01:22,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:01:22,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:01:22,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:01:22,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:01:22,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:01:22,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:01:22,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:01:22,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:01:22,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:01:22,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:01:22,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:01:22,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:01:22,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:01:22,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:01:22,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:01:22,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:01:22,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:01:22,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:01:22,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:01:22,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:01:22,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:01:22,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:01:22,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:01:22,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:01:22,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:01:22,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:01:22,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:01:22,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:01:22,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:01:22,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:01:22,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:01:22,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:01:22,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:01:22,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:01:22,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:01:22,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:01:22,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:01:22,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:01:22,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 10:01:22,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:01:22,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:01:22,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:01:22,347 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:01:22,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:01:22,347 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:01:22,347 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:01:22,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:01:22,348 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:01:22,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:01:22,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:01:22,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:01:22,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:01:22,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:01:22,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:01:22,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:01:22,350 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:01:22,350 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 10:01:22,350 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 10:01:22,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:01:22,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:01:22,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:01:22,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:01:22,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:01:22,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 10:01:22,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:01:22,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:01:22,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:01:22,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:01:22,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:01:22,352 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 10:01:22,352 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 10:01:22,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:01:22,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:01:22,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:01:22,353 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f1b097c6afa8c7725240a0195cb226f841ae6ea [2020-12-09 10:01:22,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:01:22,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:01:22,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:01:22,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:01:22,609 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:01:22,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-09 10:01:22,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/6c860b98f/65141cb880494c7184b193c3668e692e/FLAGbcab737a2 [2020-12-09 10:01:23,049 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:01:23,049 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-09 10:01:23,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/6c860b98f/65141cb880494c7184b193c3668e692e/FLAGbcab737a2 [2020-12-09 10:01:23,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/data/6c860b98f/65141cb880494c7184b193c3668e692e [2020-12-09 10:01:23,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:01:23,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:01:23,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:01:23,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:01:23,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:01:23,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c447f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23, skipping insertion in model container [2020-12-09 10:01:23,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:01:23,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:01:23,189 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533] [2020-12-09 10:01:23,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:01:23,210 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:01:23,229 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533] [2020-12-09 10:01:23,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:01:23,251 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:01:23,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23 WrapperNode [2020-12-09 10:01:23,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:01:23,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:01:23,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:01:23,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:01:23,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:01:23,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:01:23,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:01:23,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:01:23,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... [2020-12-09 10:01:23,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:01:23,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:01:23,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:01:23,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:01:23,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/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 [2020-12-09 10:01:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 10:01:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:01:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:01:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:01:23,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:01:23,864 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-09 10:01:23,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:23 BoogieIcfgContainer [2020-12-09 10:01:23,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:01:23,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:01:23,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:01:23,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:01:23,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:01:23" (1/3) ... [2020-12-09 10:01:23,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aae594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:01:23, skipping insertion in model container [2020-12-09 10:01:23,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:23" (2/3) ... [2020-12-09 10:01:23,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aae594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:01:23, skipping insertion in model container [2020-12-09 10:01:23,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:23" (3/3) ... [2020-12-09 10:01:23,874 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2020-12-09 10:01:23,886 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:01:23,888 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 10:01:23,896 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 10:01:23,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:01:23,912 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:01:23,912 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:01:23,912 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:01:23,912 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:01:23,912 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:01:23,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:01:23,913 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:01:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-09 10:01:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:01:23,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:23,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:23,925 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:23,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-09 10:01:23,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:23,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014440849] [2020-12-09 10:01:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 10:01:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:23,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 10:01:23,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:24,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:24,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014440849] [2020-12-09 10:01:24,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:24,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:01:24,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203420327] [2020-12-09 10:01:24,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 10:01:24,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:24,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 10:01:24,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:01:24,028 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-09 10:01:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:24,043 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-09 10:01:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 10:01:24,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 10:01:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:24,050 INFO L225 Difference]: With dead ends: 63 [2020-12-09 10:01:24,050 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 10:01:24,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:01:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 10:01:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 10:01:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 10:01:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-09 10:01:24,080 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-09 10:01:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:24,081 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-09 10:01:24,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 10:01:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-09 10:01:24,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:01:24,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:24,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:24,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 10:01:24,285 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:24,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-09 10:01:24,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:24,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628390690] [2020-12-09 10:01:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 10:01:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:24,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 10:01:24,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:24,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:24,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628390690] [2020-12-09 10:01:24,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:24,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:01:24,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061730655] [2020-12-09 10:01:24,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:24,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:24,372 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-12-09 10:01:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:24,848 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-12-09 10:01:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:01:24,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 10:01:24,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:24,855 INFO L225 Difference]: With dead ends: 54 [2020-12-09 10:01:24,855 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 10:01:24,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:01:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 10:01:24,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 10:01:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 10:01:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-09 10:01:24,861 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-12-09 10:01:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:24,861 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-09 10:01:24,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-09 10:01:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 10:01:24,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:24,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:25,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 10:01:25,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:25,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:25,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-09 10:01:25,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:25,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647593681] [2020-12-09 10:01:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 10:01:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:25,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 10:01:25,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:25,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:25,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647593681] [2020-12-09 10:01:25,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:25,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:01:25,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396859319] [2020-12-09 10:01:25,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:25,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:25,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:25,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:25,188 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-12-09 10:01:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:25,663 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-09 10:01:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:01:25,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 10:01:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:25,670 INFO L225 Difference]: With dead ends: 50 [2020-12-09 10:01:25,670 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 10:01:25,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:01:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 10:01:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 10:01:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 10:01:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-09 10:01:25,675 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-12-09 10:01:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:25,675 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-09 10:01:25,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-09 10:01:25,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 10:01:25,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:25,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:25,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 10:01:25,877 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:25,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-09 10:01:25,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:25,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399209409] [2020-12-09 10:01:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 10:01:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:25,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 10:01:25,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:26,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:26,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399209409] [2020-12-09 10:01:26,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:26,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:01:26,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964142810] [2020-12-09 10:01:26,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:26,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:26,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:26,014 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-12-09 10:01:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:26,566 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-12-09 10:01:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:01:26,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 10:01:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:26,567 INFO L225 Difference]: With dead ends: 47 [2020-12-09 10:01:26,567 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 10:01:26,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:01:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 10:01:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-09 10:01:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 10:01:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-09 10:01:26,573 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-12-09 10:01:26,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:26,573 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-09 10:01:26,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-09 10:01:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:01:26,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:26,573 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:26,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 10:01:26,775 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:26,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:26,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2020-12-09 10:01:26,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:26,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207215733] [2020-12-09 10:01:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 10:01:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:26,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 10:01:26,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:26,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 10:01:27,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207215733] [2020-12-09 10:01:27,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1813083327] [2020-12-09 10:01:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 10:01:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:27,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 10:01:27,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:27,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 10:01:27,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093903844] [2020-12-09 10:01:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 10:01:27,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:27,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 10:01:27,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 10:01:27,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 4] total 8 [2020-12-09 10:01:27,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157704449] [2020-12-09 10:01:27,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 10:01:27,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:27,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 10:01:27,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:01:27,509 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 8 states. [2020-12-09 10:01:28,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:28,206 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-09 10:01:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 10:01:28,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 10:01:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:28,212 INFO L225 Difference]: With dead ends: 57 [2020-12-09 10:01:28,212 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 10:01:28,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-09 10:01:28,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 10:01:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2020-12-09 10:01:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 10:01:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-12-09 10:01:28,218 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 14 [2020-12-09 10:01:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:28,218 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-12-09 10:01:28,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 10:01:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-12-09 10:01:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 10:01:28,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:28,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:28,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:28,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:01:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2020-12-09 10:01:28,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:28,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541512728] [2020-12-09 10:01:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 10:01:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:28,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 10:01:28,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:29,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:29,641 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 10:01:30,278 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 10:01:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:30,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541512728] [2020-12-09 10:01:30,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [531970037] [2020-12-09 10:01:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 10:01:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:30,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 10:01:30,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:30,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:30,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14637723] [2020-12-09 10:01:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:01:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:30,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 10:01:30,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:30,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:01:31,926 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 10:01:31,934 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 10:01:31,934 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:01:34,966 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 10:01:41,889 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 10:01:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:01:41,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 10:01:41,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 7] total 14 [2020-12-09 10:01:41,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628692803] [2020-12-09 10:01:41,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 10:01:41,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 10:01:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=127, Unknown=4, NotChecked=0, Total=182 [2020-12-09 10:01:41,919 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-12-09 10:01:52,711 WARN L197 SmtUtils]: Spent 9.22 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-09 10:02:05,608 WARN L197 SmtUtils]: Spent 9.34 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 10:02:16,349 WARN L197 SmtUtils]: Spent 9.64 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 10:02:31,200 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 10:02:41,038 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 10:02:48,340 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 10:03:16,651 WARN L197 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 10:03:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:03:29,475 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-12-09 10:03:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 10:03:29,482 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-12-09 10:03:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:03:29,483 INFO L225 Difference]: With dead ends: 73 [2020-12-09 10:03:29,483 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 10:03:29,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 53.9s TimeCoverageRelationStatistics Valid=182, Invalid=411, Unknown=7, NotChecked=0, Total=600 [2020-12-09 10:03:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 10:03:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2020-12-09 10:03:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-09 10:03:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-12-09 10:03:29,491 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 16 [2020-12-09 10:03:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:03:29,492 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-12-09 10:03:29,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 10:03:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-12-09 10:03:29,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 10:03:29,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:03:29,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 10:03:30,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:03:30,096 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:03:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:03:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 1 times [2020-12-09 10:03:30,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:03:30,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102911434] [2020-12-09 10:03:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 10:03:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:03:30,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 10:03:30,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:03:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:03:30,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:03:31,270 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 10:03:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-09 10:03:32,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102911434] [2020-12-09 10:03:32,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [306793381] [2020-12-09 10:03:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 10:03:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:03:32,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 10:03:32,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:03:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:03:32,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:03:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-09 10:03:34,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69135376] [2020-12-09 10:03:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:03:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:03:34,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 10:03:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:03:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:03:35,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:03:35,846 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 10:03:35,850 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 10:03:35,851 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:03:39,869 WARN L197 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 10:03:47,925 WARN L197 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 10:03:56,327 WARN L197 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 43 [2020-12-09 10:03:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:03:56,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 10:03:56,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 4, 9, 8] total 17 [2020-12-09 10:03:56,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707118540] [2020-12-09 10:03:56,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 10:03:56,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:03:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 10:03:56,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=195, Unknown=2, NotChecked=0, Total=272 [2020-12-09 10:03:56,355 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 17 states. [2020-12-09 10:04:18,155 WARN L197 SmtUtils]: Spent 14.95 s on a formula simplification that was a NOOP. DAG size: 76 [2020-12-09 10:04:35,247 WARN L197 SmtUtils]: Spent 14.13 s on a formula simplification that was a NOOP. DAG size: 72 [2020-12-09 10:04:52,208 WARN L197 SmtUtils]: Spent 14.68 s on a formula simplification that was a NOOP. DAG size: 75 [2020-12-09 10:05:16,643 WARN L197 SmtUtils]: Spent 8.25 s on a formula simplification that was a NOOP. DAG size: 51 [2020-12-09 10:05:32,388 WARN L197 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 47 [2020-12-09 10:05:51,307 WARN L197 SmtUtils]: Spent 8.14 s on a formula simplification that was a NOOP. DAG size: 50 [2020-12-09 10:06:00,232 WARN L197 SmtUtils]: Spent 2.98 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 10:06:32,754 WARN L197 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 10:06:44,650 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 10:07:04,379 WARN L197 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 10:07:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:07:41,525 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-09 10:07:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 10:07:41,525 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-12-09 10:07:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:07:41,526 INFO L225 Difference]: With dead ends: 76 [2020-12-09 10:07:41,526 INFO L226 Difference]: Without dead ends: 48 [2020-12-09 10:07:41,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 171.9s TimeCoverageRelationStatistics Valid=270, Invalid=631, Unknown=29, NotChecked=0, Total=930 [2020-12-09 10:07:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-09 10:07:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2020-12-09 10:07:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 10:07:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-12-09 10:07:41,534 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2020-12-09 10:07:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:07:41,534 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-12-09 10:07:41,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 10:07:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-12-09 10:07:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 10:07:41,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:07:41,535 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-09 10:07:42,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 10:07:42,139 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:07:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:07:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1602839570, now seen corresponding path program 2 times [2020-12-09 10:07:42,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:07:42,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362940414] [2020-12-09 10:07:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 10:07:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:07:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 10:07:42,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:07:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:07:42,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:07:44,147 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 10:07:45,255 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 10:07:46,583 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 10:07:48,192 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 10:07:49,902 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 10:07:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:07:49,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362940414] [2020-12-09 10:07:49,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1091541241] [2020-12-09 10:07:49,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2020-12-09 10:07:50,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 10:07:50,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 10:07:50,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 10:07:50,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:07:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:07:50,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:07:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:07:50,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852194493] [2020-12-09 10:07:50,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33c03179-f597-459f-a9fa-4fd9bd3adddb/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:07:52,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 10:07:52,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 10:07:52,168 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-09 10:07:52,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:07:53,557 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-12-09 10:07:54,397 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-09 10:07:55,227 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-09 10:07:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:07:55,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:07:58,265 WARN L197 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 10:07:58,269 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 10:07:58,269 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:08:08,434 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 10:08:22,326 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 10:08:38,228 WARN L197 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 10:08:38,232 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 10:08:38,232 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:08:40,320 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ sign_extend 32) (_ bv2 32))) (.cse4 ((_ sign_extend 32) (_ bv1 32)))) (let ((.cse0 (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (.cse1 (bvmul .cse4 .cse4)) (.cse2 (bvmul .cse4 c_ULTIMATE.start_main_~a~0)) (.cse3 (bvmul .cse4 .cse6)) (.cse5 (bvmul c_ULTIMATE.start_main_~a~0 .cse6))) (or (not (bvsle c_ULTIMATE.start_main_~s~0 ((_ sign_extend 32) c_ULTIMATE.start_main_~n~0))) (not (= c_ULTIMATE.start_main_~s~0 (bvadd .cse0 .cse1 (bvmul (_ bv2 64) .cse2)))) (= (bvadd .cse0 (bvmul (_ bv4 64) .cse1) (bvmul (_ bv4 64) .cse2)) (bvadd .cse3 .cse4 c_ULTIMATE.start_main_~s~0 .cse5)) (not (= (bvadd .cse6 c_ULTIMATE.start_main_~t~0) (bvadd .cse3 .cse4 .cse5)))))) is different from true [2020-12-09 10:08:42,422 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ sign_extend 32) (_ bv2 32))) (.cse4 ((_ sign_extend 32) (_ bv1 32)))) (let ((.cse0 (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (.cse1 (bvmul .cse4 .cse4)) (.cse2 (bvmul .cse4 c_ULTIMATE.start_main_~a~0)) (.cse3 (bvmul .cse4 .cse6)) (.cse5 (bvmul c_ULTIMATE.start_main_~a~0 .cse6))) (or (not (bvsle c_ULTIMATE.start_main_~s~0 ((_ sign_extend 32) c_ULTIMATE.start_main_~n~0))) (not (= c_ULTIMATE.start_main_~s~0 (bvadd .cse0 .cse1 (bvmul (_ bv2 64) .cse2)))) (= (bvadd .cse0 (bvmul (_ bv4 64) .cse1) (bvmul (_ bv4 64) .cse2)) (bvadd .cse3 .cse4 c_ULTIMATE.start_main_~s~0 .cse5)) (not (= (bvadd .cse6 c_ULTIMATE.start_main_~t~0) (bvadd .cse3 .cse4 .cse5))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))))) is different from true [2020-12-09 10:08:42,427 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 10:08:42,427 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:08:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 2 not checked. [2020-12-09 10:08:42,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 10:08:42,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 15, 10] total 31 [2020-12-09 10:08:42,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807148311] [2020-12-09 10:08:42,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-09 10:08:42,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:08:42,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-09 10:08:42,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=593, Unknown=19, NotChecked=110, Total=930 [2020-12-09 10:08:42,509 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 31 states. [2020-12-09 10:08:44,902 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2020-12-09 10:08:45,225 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 21 [2020-12-09 10:08:45,680 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2020-12-09 10:08:46,343 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-09 10:08:47,245 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-09 10:08:48,035 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-12-09 10:08:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:48,465 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-09 10:08:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 10:08:48,467 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2020-12-09 10:08:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:48,467 INFO L225 Difference]: With dead ends: 48 [2020-12-09 10:08:48,467 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:08:48,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 178 SyntacticMatches, 19 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 60.5s TimeCoverageRelationStatistics Valid=323, Invalid=926, Unknown=19, NotChecked=138, Total=1406 [2020-12-09 10:08:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:08:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:08:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:08:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:08:48,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-12-09 10:08:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:48,469 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:08:48,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-09 10:08:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:08:48,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:08:49,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:08:49,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:08:49,183 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 165 [2020-12-09 10:09:01,366 WARN L197 SmtUtils]: Spent 12.11 s on a formula simplification. DAG size of input: 161 DAG size of output: 70 [2020-12-09 10:09:25,069 WARN L197 SmtUtils]: Spent 23.70 s on a formula simplification. DAG size of input: 127 DAG size of output: 43 [2020-12-09 10:09:30,861 WARN L197 SmtUtils]: Spent 5.79 s on a formula simplification. DAG size of input: 158 DAG size of output: 81 [2020-12-09 10:09:54,133 WARN L197 SmtUtils]: Spent 23.27 s on a formula simplification. DAG size of input: 167 DAG size of output: 79 [2020-12-09 10:10:10,829 WARN L197 SmtUtils]: Spent 16.69 s on a formula simplification. DAG size of input: 126 DAG size of output: 41 [2020-12-09 10:10:38,070 WARN L197 SmtUtils]: Spent 27.24 s on a formula simplification. DAG size of input: 164 DAG size of output: 80 [2020-12-09 10:10:38,072 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:10:38,072 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:10:38,072 INFO L265 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-12-09 10:10:38,072 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 10:10:38,072 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:10:38,072 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:10:38,073 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 10:10:38,073 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:10:38,073 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:10:38,073 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse9 ((_ sign_extend 32) (_ bv1 32)))) (let ((.cse6 (bvmul .cse9 (_ bv2 64))) (.cse11 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse8 (bvadd .cse6 .cse11)) (.cse4 ((_ sign_extend 32) ULTIMATE.start_main_~n~0)) (.cse0 (= (bvadd .cse9 (bvmul ULTIMATE.start_main_~a~0 .cse11)) ULTIMATE.start_main_~t~0)) (.cse10 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (bvsle ULTIMATE.start_main_~n~0 (_ bv20 32))) (.cse7 ((_ sign_extend 32) (_ bv0 32)))) (or (let ((.cse3 (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~s~0))) (and .cse0 .cse1 .cse2 (bvsle .cse3 .cse4) .cse5 (= ULTIMATE.start_main_~a~0 (bvadd .cse6 .cse7)) (= .cse3 .cse8))) (and (= .cse7 (bvadd (bvmul .cse9 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~a~0)) .cse0 .cse10 .cse1 .cse2 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse11 (_ bv18446744073709551615 64))) .cse6) .cse5) (and .cse0 .cse10 (= (bvadd (bvmul .cse9 (_ bv4 64)) .cse7) ULTIMATE.start_main_~a~0) .cse1 .cse2 .cse5 (= ULTIMATE.start_main_~s~0 (bvadd (bvmul .cse9 (_ bv5 64)) (bvmul .cse11 (_ bv10 64))))) (and (bvsle .cse8 .cse4) .cse0 .cse1 .cse2 (= (bvadd (bvmul .cse9 (_ bv3 64)) .cse7) ULTIMATE.start_main_~a~0) .cse5 (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse9 .cse9) (bvmul (bvmul .cse9 ULTIMATE.start_main_~a~0) (_ bv2 64))))) (and .cse10 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 .cse9) .cse5 (= .cse7 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse9)))))) [2020-12-09 10:10:38,073 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:10:38,073 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-09 10:10:38,073 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse13 ((_ sign_extend 32) (_ bv1 32)))) (let ((.cse5 (bvmul .cse13 (_ bv2 64))) (.cse8 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse7 (bvmul .cse13 (_ bv18446744073709551615 64))) (.cse10 (= (bvadd .cse13 (bvmul ULTIMATE.start_main_~a~0 .cse8)) ULTIMATE.start_main_~t~0)) (.cse12 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse9 (bvadd .cse5 .cse8)) (.cse3 ((_ sign_extend 32) ULTIMATE.start_main_~n~0)) (.cse11 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (bvsle ULTIMATE.start_main_~n~0 (_ bv20 32))) (.cse6 ((_ sign_extend 32) (_ bv0 32)))) (or (let ((.cse2 (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~s~0))) (and .cse0 .cse1 (bvsle .cse2 .cse3) .cse4 (= ULTIMATE.start_main_~a~0 (bvadd .cse5 .cse6)) (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551614 64)) .cse7 ULTIMATE.start_main_~s~0 .cse8) (_ bv0 64)) (= .cse2 .cse9))) (and .cse10 .cse11 .cse12 .cse0 (= (bvadd (bvmul .cse13 (_ bv4 64)) .cse6) ULTIMATE.start_main_~a~0) .cse1 .cse4 (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse13 .cse13) (bvmul (bvmul .cse13 ULTIMATE.start_main_~a~0) (_ bv2 64))))) (and (= .cse6 (bvadd .cse7 ULTIMATE.start_main_~a~0)) .cse10 .cse11 .cse12 .cse0 .cse1 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse8 (_ bv18446744073709551615 64))) .cse5) .cse4) (and (bvsle .cse9 .cse3) .cse0 .cse1 (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv2 64)) .cse5) ULTIMATE.start_main_~s~0) (= (bvadd (bvmul .cse13 (_ bv3 64)) .cse6) ULTIMATE.start_main_~a~0) .cse4 (= (bvadd ULTIMATE.start_main_~t~0 (bvmul .cse8 (_ bv18446744073709551613 64))) .cse13)) (and .cse11 .cse0 .cse1 (= ULTIMATE.start_main_~s~0 .cse13) .cse4 (= .cse6 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse13)))))) [2020-12-09 10:10:38,074 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:10:38,074 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse12 ((_ sign_extend 32) (_ bv1 32)))) (let ((.cse6 ((_ sign_extend 32) (_ bv0 32))) (.cse5 (bvmul .cse12 (_ bv2 64))) (.cse8 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse9 (bvadd .cse5 .cse8)) (.cse3 ((_ sign_extend 32) ULTIMATE.start_main_~n~0)) (.cse7 (bvmul .cse12 (_ bv18446744073709551615 64))) (.cse10 (= (bvadd .cse12 (bvmul ULTIMATE.start_main_~a~0 .cse8)) ULTIMATE.start_main_~t~0)) (.cse11 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse13 (= .cse6 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse8) .cse12 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))) (.cse14 (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse12 .cse12) (bvmul (bvmul .cse12 ULTIMATE.start_main_~a~0) (_ bv2 64))))) (.cse15 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (bvsle ULTIMATE.start_main_~n~0 (_ bv20 32)))) (or (let ((.cse2 (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~s~0))) (and .cse0 .cse1 (bvsle .cse2 .cse3) .cse4 (= ULTIMATE.start_main_~a~0 (bvadd .cse5 .cse6)) (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551614 64)) .cse7 ULTIMATE.start_main_~s~0 .cse8) (_ bv0 64)) (= .cse2 .cse9))) (and (bvsle .cse9 .cse3) .cse10 .cse11 .cse0 .cse1 (= (bvadd (bvmul .cse12 (_ bv3 64)) .cse6) ULTIMATE.start_main_~a~0) .cse13 .cse4 .cse14) (and (= .cse6 (bvadd .cse7 ULTIMATE.start_main_~a~0)) .cse10 .cse15 .cse11 .cse0 .cse1 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse8 (_ bv18446744073709551615 64))) .cse5) .cse4) (and .cse10 .cse15 .cse11 .cse0 (= (bvadd (bvmul .cse12 (_ bv4 64)) .cse6) ULTIMATE.start_main_~a~0) .cse1 .cse13 .cse4 .cse14) (and .cse15 .cse0 .cse1 (= ULTIMATE.start_main_~s~0 .cse12) .cse4 (= .cse6 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse12)))))) [2020-12-09 10:10:38,074 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:10:38,074 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse2 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))) (or (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (= (_ bv0 32) ULTIMATE.start_assume_abort_if_not_~cond)))) (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse2 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)))) [2020-12-09 10:10:38,074 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:10:38,074 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:10:38,074 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (or (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (= (_ bv0 32) ULTIMATE.start_assume_abort_if_not_~cond)) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:10:38,075 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:10:38,076 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse4 ((_ sign_extend 32) (_ bv1 32)))) (let ((.cse11 (bvmul .cse4 (_ bv2 64))) (.cse8 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse12 (bvmul .cse4 (_ bv18446744073709551615 64))) (.cse0 (= (bvadd .cse4 (bvmul ULTIMATE.start_main_~a~0 .cse8)) ULTIMATE.start_main_~t~0)) (.cse2 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse13 (bvadd .cse11 .cse8)) (.cse10 ((_ sign_extend 32) ULTIMATE.start_main_~n~0)) (.cse3 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse6 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse7 (bvsle ULTIMATE.start_main_~n~0 (_ bv20 32))) (.cse5 ((_ sign_extend 32) (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (= (bvadd (bvmul .cse4 (_ bv4 64)) .cse5) ULTIMATE.start_main_~a~0) .cse6 .cse7 (= ULTIMATE.start_main_~s~0 (bvadd (bvmul .cse4 (_ bv5 64)) (bvmul .cse8 (_ bv10 64))))) (let ((.cse9 (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~s~0))) (and .cse3 .cse6 (bvsle .cse9 .cse10) .cse7 (= ULTIMATE.start_main_~a~0 (bvadd .cse11 .cse5)) (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551614 64)) .cse12 ULTIMATE.start_main_~s~0 .cse8) (_ bv0 64)) (= .cse9 .cse13))) (and (= .cse5 (bvadd .cse12 ULTIMATE.start_main_~a~0)) .cse0 .cse1 .cse2 .cse3 .cse6 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse8 (_ bv18446744073709551615 64))) .cse11) .cse7) (and (bvsle .cse13 .cse10) .cse3 .cse6 (= (bvadd (bvmul .cse4 (_ bv3 64)) .cse5) ULTIMATE.start_main_~a~0) .cse7 (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse4 .cse4) (bvmul (bvmul .cse4 ULTIMATE.start_main_~a~0) (_ bv2 64)))) (= (bvadd ULTIMATE.start_main_~t~0 (bvmul .cse8 (_ bv18446744073709551613 64))) .cse4)) (and .cse1 .cse6 (= ULTIMATE.start_main_~s~0 .cse4) .cse7 (= .cse5 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse4)))))) [2020-12-09 10:10:38,076 INFO L262 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-12-09 10:10:38,076 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:10:38,091 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 10:10:38,093 INFO L168 Benchmark]: Toolchain (without parser) took 555020.05 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.4 MB in the beginning and 57.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:10:38,094 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:10:38,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.76 ms. Allocated memory is still 60.8 MB. Free memory was 40.2 MB in the beginning and 44.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:10:38,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.61 ms. Allocated memory is still 60.8 MB. Free memory was 44.4 MB in the beginning and 42.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:10:38,095 INFO L168 Benchmark]: Boogie Preprocessor took 18.71 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:10:38,095 INFO L168 Benchmark]: RCFGBuilder took 568.27 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 41.5 MB in the beginning and 60.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:10:38,096 INFO L168 Benchmark]: TraceAbstraction took 554224.76 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 57.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:10:38,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 177.76 ms. Allocated memory is still 60.8 MB. Free memory was 40.2 MB in the beginning and 44.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.61 ms. Allocated memory is still 60.8 MB. Free memory was 44.4 MB in the beginning and 42.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.71 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 568.27 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 41.5 MB in the beginning and 60.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 554224.76 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 57.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((((~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvsle64(~bvadd16(~bvmul64(t, 18446744073709551615bv64), s), ~sign_extendFrom8To32(n))) && ~bvsle64(n, 20bv32)) && a == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64), ~sign_extendFrom8To32(0bv32))) && ~bvadd16(~bvmul64(t, 18446744073709551615bv64), s) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64), ~sign_extendFrom8To32(2bv32))) || ((((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t) && ~bvsge32(n, 0bv32)) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64)) && ~bvsle64(n, 20bv32))) || ((((((~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t && ~bvsge32(n, 0bv32)) && ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 4bv64), ~sign_extendFrom8To32(0bv32)) == a) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvsle64(n, 20bv32)) && s == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 5bv64), ~bvmul64(~sign_extendFrom8To32(2bv32), 10bv64)))) || ((((((~bvsle64(~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64), ~sign_extendFrom8To32(2bv32)), ~sign_extendFrom8To32(n)) && ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 3bv64), ~sign_extendFrom8To32(0bv32)) == a) && ~bvsle64(n, 20bv32)) && s == ~bvadd16(~bvmul64(a, a), ~bvmul64(~sign_extendFrom8To32(1bv32), ~sign_extendFrom8To32(1bv32)), ~bvmul64(~bvmul64(~sign_extendFrom8To32(1bv32), a), 2bv64)))) || ((((((~bvsge32(n, 0bv32) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && s == ~sign_extendFrom8To32(1bv32)) && ~bvsle64(n, 20bv32)) && ~sign_extendFrom8To32(0bv32) == a) && t == ~sign_extendFrom8To32(1bv32)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...