./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG --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 f2c97cfaf178ecbb63eaaf825cd5ea4b5be1bf37ecd5b20cf7e400328e1cd168 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:52:21,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:52:21,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:52:21,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:52:21,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:52:21,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:52:21,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:52:21,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:52:21,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:52:21,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:52:21,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:52:21,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:52:21,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:52:21,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:52:21,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:52:21,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:52:21,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:52:21,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:52:21,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:52:21,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:52:21,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:52:21,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:52:21,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:52:21,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:52:21,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:52:21,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:52:21,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:52:21,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:52:21,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:52:21,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:52:21,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:52:21,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:52:21,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:52:21,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:52:21,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:52:21,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:52:21,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:52:21,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:52:21,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:52:21,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:52:21,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:52:21,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:52:21,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:52:21,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:52:21,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:52:21,690 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:52:21,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:52:21,690 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:52:21,690 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:52:21,691 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:52:21,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:52:21,691 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:52:21,691 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:52:21,691 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:52:21,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:52:21,692 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:52:21,692 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:52:21,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:52:21,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:52:21,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:52:21,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:52:21,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:52:21,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:52:21,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:52:21,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:52:21,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:52:21,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:52:21,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:52:21,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:52:21,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:52:21,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:52:21,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:52:21,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:52:21,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:52:21,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:52:21,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:52:21,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:52:21,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:52:21,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:52:21,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:52:21,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:52:21,698 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_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2c97cfaf178ecbb63eaaf825cd5ea4b5be1bf37ecd5b20cf7e400328e1cd168 [2021-10-29 05:52:22,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:52:22,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:52:22,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:52:22,110 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:52:22,123 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:52:22,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2021-10-29 05:52:22,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/data/e0eb239fa/6b99aeccf80447d0a6295ac9251bddc6/FLAG16fb88a4b [2021-10-29 05:52:22,701 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:52:22,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2021-10-29 05:52:22,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/data/e0eb239fa/6b99aeccf80447d0a6295ac9251bddc6/FLAG16fb88a4b [2021-10-29 05:52:23,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/data/e0eb239fa/6b99aeccf80447d0a6295ac9251bddc6 [2021-10-29 05:52:23,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:52:23,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:52:23,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:52:23,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:52:23,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:52:23,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ed1f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23, skipping insertion in model container [2021-10-29 05:52:23,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:52:23,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:52:23,352 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i[951,964] [2021-10-29 05:52:23,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:52:23,385 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:52:23,410 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i[951,964] [2021-10-29 05:52:23,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:52:23,450 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:52:23,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23 WrapperNode [2021-10-29 05:52:23,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:52:23,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:52:23,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:52:23,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:52:23,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:52:23,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:52:23,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:52:23,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:52:23,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:52:23,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:52:23,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:52:23,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:52:23,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (1/1) ... [2021-10-29 05:52:23,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:52:23,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:52:23,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:52:23,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:52:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:52:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:52:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:52:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:52:26,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:52:26,035 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:52:26,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:52:26 BoogieIcfgContainer [2021-10-29 05:52:26,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:52:26,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:52:26,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:52:26,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:52:26,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:52:23" (1/3) ... [2021-10-29 05:52:26,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb1e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:52:26, skipping insertion in model container [2021-10-29 05:52:26,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:52:23" (2/3) ... [2021-10-29 05:52:26,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb1e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:52:26, skipping insertion in model container [2021-10-29 05:52:26,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:52:26" (3/3) ... [2021-10-29 05:52:26,053 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound2.i [2021-10-29 05:52:26,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:52:26,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:52:26,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:52:26,107 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:52:26,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:52:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:52:26,127 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:52:26,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:52:26,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:52:26,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:52:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1384273294, now seen corresponding path program 1 times [2021-10-29 05:52:26,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:52:26,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81679394] [2021-10-29 05:52:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:26,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:52:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:52:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:52:26,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:52:26,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81679394] [2021-10-29 05:52:26,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81679394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:26,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:52:26,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:52:26,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181638452] [2021-10-29 05:52:26,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:52:26,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:52:26,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:52:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:52:26,323 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:52:26,339 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-29 05:52:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:52:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:52:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:52:26,349 INFO L225 Difference]: With dead ends: 28 [2021-10-29 05:52:26,349 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 05:52:26,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:52:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 05:52:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 05:52:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-29 05:52:26,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2021-10-29 05:52:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:52:26,386 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-29 05:52:26,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-29 05:52:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:52:26,388 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:52:26,388 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:52:26,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:52:26,389 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:52:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:52:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash -346058289, now seen corresponding path program 1 times [2021-10-29 05:52:26,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:52:26,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034902949] [2021-10-29 05:52:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:26,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:52:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:52:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:52:26,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:52:26,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034902949] [2021-10-29 05:52:26,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034902949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:26,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:52:26,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:52:26,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146839155] [2021-10-29 05:52:26,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:52:26,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:52:26,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:52:26,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:52:26,468 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:52:26,496 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-10-29 05:52:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:52:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:52:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:52:26,498 INFO L225 Difference]: With dead ends: 26 [2021-10-29 05:52:26,498 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 05:52:26,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:52:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 05:52:26,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 05:52:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-29 05:52:26,504 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2021-10-29 05:52:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:52:26,505 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-29 05:52:26,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-29 05:52:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:52:26,506 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:52:26,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:52:26,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:52:26,507 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:52:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:52:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2089077620, now seen corresponding path program 1 times [2021-10-29 05:52:26,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:52:26,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261864115] [2021-10-29 05:52:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:26,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:52:26,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:52:26,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459304144] [2021-10-29 05:52:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:26,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:52:26,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:52:26,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:52:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:52:26,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:52:26,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:52:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:52:26,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:52:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:52:27,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:52:27,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261864115] [2021-10-29 05:52:27,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:52:27,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459304144] [2021-10-29 05:52:27,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459304144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:27,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:52:27,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:52:27,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036159837] [2021-10-29 05:52:27,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:52:27,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:52:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:52:27,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:52:27,166 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:52:29,719 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-10-29 05:52:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:52:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:52:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:52:29,722 INFO L225 Difference]: With dead ends: 38 [2021-10-29 05:52:29,722 INFO L226 Difference]: Without dead ends: 28 [2021-10-29 05:52:29,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:52:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-29 05:52:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-10-29 05:52:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2021-10-29 05:52:29,730 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 8 [2021-10-29 05:52:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:52:29,730 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-10-29 05:52:29,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2021-10-29 05:52:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:52:29,732 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:52:29,732 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:52:29,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:52:29,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:29,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:52:29,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:52:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1026504725, now seen corresponding path program 1 times [2021-10-29 05:52:29,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:52:29,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989846292] [2021-10-29 05:52:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:29,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:52:29,964 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:52:29,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029061963] [2021-10-29 05:52:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:29,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:29,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:52:29,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:52:29,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:52:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:52:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:52:30,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:52:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:52:30,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:52:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:52:30,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:52:30,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989846292] [2021-10-29 05:52:30,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:52:30,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029061963] [2021-10-29 05:52:30,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029061963] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:52:30,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [242881557] [2021-10-29 05:52:30,262 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 05:52:30,262 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:52:30,267 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:52:30,272 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:52:30,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:52:30,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,309 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:52:30,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:52:30,313 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:52:30,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:52:30,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-10-29 05:52:30,354 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-29 05:52:30,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:52:30,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:52:30,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:52:30,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:52:30,396 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:52:30,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:52:30,460 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:52:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:52:30,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:52:30,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:52:30,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:52:30,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:52:30,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:52:30,495 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:52:30,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:52:30,531 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-29 05:52:30,537 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:52:30,537 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:101, output treesize:86 [2021-10-29 05:52:30,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-29 05:52:30,562 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.8 percent of original size [2021-10-29 05:52:30,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-29 05:52:30,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-29 05:52:30,600 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.1 percent of original size [2021-10-29 05:52:30,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-10-29 05:52:30,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:52:30,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:52:30,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:52:30,659 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:52:31,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [242881557] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:31,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:52:31,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 11 [2021-10-29 05:52:31,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56044207] [2021-10-29 05:52:31,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:52:31,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:52:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:52:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:52:31,901 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:52:36,321 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-10-29 05:52:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:52:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:52:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:52:36,323 INFO L225 Difference]: With dead ends: 38 [2021-10-29 05:52:36,324 INFO L226 Difference]: Without dead ends: 24 [2021-10-29 05:52:36,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:52:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-29 05:52:36,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-29 05:52:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-10-29 05:52:36,329 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 12 [2021-10-29 05:52:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:52:36,330 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-10-29 05:52:36,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-10-29 05:52:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:52:36,331 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:52:36,331 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 05:52:36,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:52:36,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:36,547 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:52:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:52:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash -10010993, now seen corresponding path program 1 times [2021-10-29 05:52:36,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:52:36,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592585961] [2021-10-29 05:52:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:36,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:52:36,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:52:36,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919316385] [2021-10-29 05:52:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:36,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:52:36,577 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:52:36,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:52:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:52:36,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:52:36,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:52:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 05:52:36,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:52:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 05:52:36,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:52:36,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592585961] [2021-10-29 05:52:36,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:52:36,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919316385] [2021-10-29 05:52:36,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919316385] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:36,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:52:36,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 05:52:36,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300468633] [2021-10-29 05:52:36,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:52:36,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:52:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:52:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:52:36,761 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:52:36,819 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-10-29 05:52:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:52:36,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:52:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:52:36,820 INFO L225 Difference]: With dead ends: 44 [2021-10-29 05:52:36,821 INFO L226 Difference]: Without dead ends: 30 [2021-10-29 05:52:36,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:52:36,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-29 05:52:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-10-29 05:52:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-29 05:52:36,827 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2021-10-29 05:52:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:52:36,827 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-29 05:52:36,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-29 05:52:36,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:52:36,829 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:52:36,829 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:52:36,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:52:37,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-29 05:52:37,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:52:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:52:37,036 INFO L85 PathProgramCache]: Analyzing trace with hash -310378451, now seen corresponding path program 1 times [2021-10-29 05:52:37,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:52:37,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379835820] [2021-10-29 05:52:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:37,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:52:37,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:52:37,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141580943] [2021-10-29 05:52:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:37,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:37,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:52:37,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:52:37,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:52:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:52:37,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:52:37,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:52:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 05:52:37,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:52:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 05:52:37,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:52:37,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379835820] [2021-10-29 05:52:37,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:52:37,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141580943] [2021-10-29 05:52:37,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141580943] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:37,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:52:37,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:52:37,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152750554] [2021-10-29 05:52:37,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:52:37,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:52:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:52:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:52:37,558 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:52:37,626 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-10-29 05:52:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:52:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:52:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:52:37,627 INFO L225 Difference]: With dead ends: 40 [2021-10-29 05:52:37,628 INFO L226 Difference]: Without dead ends: 31 [2021-10-29 05:52:37,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:52:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-29 05:52:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-10-29 05:52:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-29 05:52:37,632 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2021-10-29 05:52:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:52:37,632 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-29 05:52:37,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-29 05:52:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:52:37,634 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:52:37,634 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:52:37,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:52:37,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:37,843 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:52:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:52:37,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2052410893, now seen corresponding path program 1 times [2021-10-29 05:52:37,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:52:37,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497268876] [2021-10-29 05:52:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:37,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:52:37,852 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:52:37,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555622802] [2021-10-29 05:52:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:52:37,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:37,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:52:37,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:52:37,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:52:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:52:37,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:52:37,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:52:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:52:38,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:52:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:52:38,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:52:38,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497268876] [2021-10-29 05:52:38,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:52:38,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555622802] [2021-10-29 05:52:38,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555622802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:52:38,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:52:38,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:52:38,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919441889] [2021-10-29 05:52:38,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:52:38,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:52:38,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:52:38,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:52:38,087 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:52:38,110 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-10-29 05:52:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:52:38,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:52:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:52:38,110 INFO L225 Difference]: With dead ends: 22 [2021-10-29 05:52:38,110 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:52:38,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:52:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:52:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:52:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:52:38,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-29 05:52:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:52:38,112 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:52:38,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:52:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:52:38,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:52:38,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:52:38,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:52:38,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:52:38,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:52:38,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:52:38,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:52:38,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:52:38,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:52:38,668 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-29 05:52:38,668 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-29 05:52:38,668 INFO L853 garLoopResultBuilder]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (< (mod ULTIMATE.start_main_~r~0 4294967296) (mod ULTIMATE.start_main_~b~0 4294967296)) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= 2 (select |#length| |#t~string0.base|)) (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~q~0 0) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= (select |#length| |#t~string1.base|) 10) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= ~counter~0 2) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-10-29 05:52:38,668 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-29 05:52:38,669 INFO L860 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-29 05:52:38,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:52:38,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-29 05:52:38,669 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-29 05:52:38,669 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-29 05:52:38,670 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:52:38,670 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 47) no Hoare annotation was computed. [2021-10-29 05:52:38,670 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2021-10-29 05:52:38,670 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2021-10-29 05:52:38,670 INFO L853 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~q~0 0))) (or (and (<= 1 ~counter~0) .cse0 .cse1) (let ((.cse2 (select |#memory_int| |#t~string0.base|))) (and (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (= (select .cse2 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) .cse0 (= ~counter~0 0) (= ULTIMATE.start_main_~b~0 1) .cse1 (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= (select |#length| |#t~string1.base|) 10) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) (= 48 (select .cse2 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) [2021-10-29 05:52:38,671 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2021-10-29 05:52:38,671 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-29 05:52:38,673 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:52:38,675 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:52:38,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:52:38 BoogieIcfgContainer [2021-10-29 05:52:38,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:52:38,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:52:38,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:52:38,697 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:52:38,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:52:26" (3/4) ... [2021-10-29 05:52:38,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:52:38,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:52:38,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:52:38,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:52:38,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:52:38,730 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((\old(cond) == cond && \valid["divbin2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "divbin2.c") && r % 4294967296 < b % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && B == 1) && A == r) && q == 0) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["divbin2.c"] == 10) && B == b) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "divbin2.c" == 0) && counter == 2) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 [2021-10-29 05:52:38,740 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:52:38,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:52:38,741 INFO L168 Benchmark]: Toolchain (without parser) took 15690.95 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 57.1 MB in the beginning and 45.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:52:38,741 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:52:38,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.46 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 57.0 MB in the beginning and 103.5 MB in the end (delta: -46.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:52:38,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:52:38,743 INFO L168 Benchmark]: Boogie Preprocessor took 53.62 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 100.9 MB in the end (delta: 937.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:52:38,744 INFO L168 Benchmark]: RCFGBuilder took 2477.86 ms. Allocated memory is still 127.9 MB. Free memory was 100.9 MB in the beginning and 89.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:52:38,744 INFO L168 Benchmark]: TraceAbstraction took 12650.00 ms. Allocated memory is still 127.9 MB. Free memory was 88.8 MB in the beginning and 48.6 MB in the end (delta: 40.2 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:52:38,745 INFO L168 Benchmark]: Witness Printer took 43.98 ms. Allocated memory is still 127.9 MB. Free memory was 48.6 MB in the beginning and 45.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:52:38,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 384.46 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 57.0 MB in the beginning and 103.5 MB in the end (delta: -46.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.62 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 100.9 MB in the end (delta: 937.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2477.86 ms. Allocated memory is still 127.9 MB. Free memory was 100.9 MB in the beginning and 89.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12650.00 ms. Allocated memory is still 127.9 MB. Free memory was 88.8 MB in the beginning and 48.6 MB in the end (delta: 40.2 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. * Witness Printer took 43.98 ms. Allocated memory is still 127.9 MB. Free memory was 48.6 MB in the beginning and 45.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 12.5s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 51 SDslu, 176 SDs, 0 SdLazy, 165 SolverSat, 20 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=5, InterpolantAutomatonStates: 37, 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, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 181 HoareAnnotationTreeSize, 3 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 125 ConstructedInterpolants, 11 QuantifiedInterpolants, 543 SizeOfPredicates, 16 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 44/46 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: OVERALL_TIME[ms]: 398, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME[ms]: 331, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 11, TOOLS_QUANTIFIERELIM_TIME[ms]: 322, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 237, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 25, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 23, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 18, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 18, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 89, DAG_COMPRESSION_RETAINED_NODES: 31, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((((((((((\old(cond) == cond && \valid["divbin2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "divbin2.c") && r % 4294967296 < b % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && B == 1) && A == r) && q == 0) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["divbin2.c"] == 10) && B == b) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "divbin2.c" == 0) && counter == 2) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((1 <= counter && A == r) && q == 0) || ((((((((((((((((((\valid["divbin2.c"] == 1 && unknown-#StackHeapBarrier-unknown < "divbin2.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && A == r) && counter == 0) && b == 1) && q == 0) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["divbin2.c"] == 10) && B == b) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "divbin2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:52:38,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02dc90d2-3270-4957-a9e2-dd99c2499d11/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...