./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF --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 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:30:16,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:30:16,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:30:16,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:30:16,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:30:16,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:30:16,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:30:16,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:30:16,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:30:16,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:30:16,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:30:16,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:30:16,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:30:16,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:30:16,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:30:16,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:30:16,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:30:16,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:30:16,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:30:16,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:30:16,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:30:16,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:30:16,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:30:16,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:30:16,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:30:16,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:30:16,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:30:16,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:30:16,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:30:16,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:30:16,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:30:16,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:30:16,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:30:16,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:30:16,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:30:16,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:30:16,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:30:16,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:30:16,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:30:16,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:30:16,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:30:16,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:30:16,752 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:30:16,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:30:16,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:30:16,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:30:16,754 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:30:16,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:30:16,755 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:30:16,755 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:30:16,755 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:30:16,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:30:16,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:30:16,756 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:30:16,756 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:30:16,756 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:30:16,757 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:30:16,757 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:30:16,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:30:16,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:30:16,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:30:16,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:30:16,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:30:16,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:30:16,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:30:16,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:30:16,765 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:30:16,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:30:16,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:30:16,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:30:16,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:30:16,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:30:16,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:30:16,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:16,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:30:16,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:30:16,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:30:16,768 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:30:16,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:30:16,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:30:16,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:30:16,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:30:16,769 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_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 [2021-11-12 22:30:16,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:30:17,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:30:17,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:30:17,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:30:17,024 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:30:17,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-12 22:30:17,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/002792215/32c507e19d85448e95c06966d3eeca3a/FLAGa8be67be9 [2021-11-12 22:30:17,637 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:30:17,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-12 22:30:17,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/002792215/32c507e19d85448e95c06966d3eeca3a/FLAGa8be67be9 [2021-11-12 22:30:18,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/002792215/32c507e19d85448e95c06966d3eeca3a [2021-11-12 22:30:18,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:30:18,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:30:18,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:18,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:30:18,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:30:18,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb8909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18, skipping insertion in model container [2021-11-12 22:30:18,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:30:18,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:30:18,363 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_aee8da0d-04fd-464e-b4aa-8774d343dbd1/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-12 22:30:18,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:18,374 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:30:18,453 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_aee8da0d-04fd-464e-b4aa-8774d343dbd1/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-12 22:30:18,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:18,474 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:30:18,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18 WrapperNode [2021-11-12 22:30:18,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:18,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:18,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:30:18,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:30:18,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:18,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:30:18,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:30:18,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:30:18,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:30:18,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:30:18,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:30:18,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:30:18,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (1/1) ... [2021-11-12 22:30:18,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:18,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:30:18,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:30:18,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:30:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:30:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:30:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-12 22:30:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:30:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-12 22:30:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:30:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:30:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:30:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-12 22:30:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:30:19,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:30:19,162 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-12 22:30:19,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:19 BoogieIcfgContainer [2021-11-12 22:30:19,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:30:19,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:30:19,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:30:19,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:30:19,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:30:18" (1/3) ... [2021-11-12 22:30:19,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f10514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:19, skipping insertion in model container [2021-11-12 22:30:19,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:18" (2/3) ... [2021-11-12 22:30:19,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f10514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:19, skipping insertion in model container [2021-11-12 22:30:19,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:19" (3/3) ... [2021-11-12 22:30:19,177 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621b.c [2021-11-12 22:30:19,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:30:19,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:30:19,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:30:19,235 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 [2021-11-12 22:30:19,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:30:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) [2021-11-12 22:30:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:30:19,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:19,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:19,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 725631262, now seen corresponding path program 1 times [2021-11-12 22:30:19,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:19,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220162060] [2021-11-12 22:30:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:19,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:19,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:19,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220162060] [2021-11-12 22:30:19,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220162060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:19,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:19,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:30:19,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069232590] [2021-11-12 22:30:19,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:19,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:30:19,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:19,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:30:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:30:19,487 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-12 22:30:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:19,536 INFO L93 Difference]: Finished difference Result 47 states and 71 transitions. [2021-11-12 22:30:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:30:19,539 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-12 22:30:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:19,546 INFO L225 Difference]: With dead ends: 47 [2021-11-12 22:30:19,547 INFO L226 Difference]: Without dead ends: 22 [2021-11-12 22:30:19,564 INFO L932 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 [2021-11-12 22:30:19,568 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:19,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 18.02ms Time] [2021-11-12 22:30:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-12 22:30:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-12 22:30:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2021-11-12 22:30:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-12 22:30:19,601 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2021-11-12 22:30:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:19,601 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-12 22:30:19,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-12 22:30:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-12 22:30:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:30:19,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:19,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:19,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:30:19,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1997685412, now seen corresponding path program 1 times [2021-11-12 22:30:19,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:19,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679378079] [2021-11-12 22:30:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:19,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:30:19,683 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:30:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:30:19,833 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:30:19,833 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:30:19,841 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:30:19,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:30:19,848 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:30:19,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:30:19,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:30:19 BoogieIcfgContainer [2021-11-12 22:30:19,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:30:19,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:30:19,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:30:19,901 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:30:19,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:19" (3/4) ... [2021-11-12 22:30:19,904 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:30:19,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:30:19,905 INFO L158 Benchmark]: Toolchain (without parser) took 1789.89ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 73.0MB in the beginning and 74.2MB in the end (delta: -1.2MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-12 22:30:19,906 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 66.7MB in the beginning and 66.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:30:19,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.46ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 68.0MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:30:19,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.59ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 65.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:30:19,908 INFO L158 Benchmark]: Boogie Preprocessor took 31.89ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 63.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:30:19,909 INFO L158 Benchmark]: RCFGBuilder took 594.64ms. Allocated memory is still 96.5MB. Free memory was 63.8MB in the beginning and 46.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-12 22:30:19,909 INFO L158 Benchmark]: TraceAbstraction took 732.83ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 45.7MB in the beginning and 74.2MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:30:19,910 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:30:19,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 66.7MB in the beginning and 66.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.46ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 68.0MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.59ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 65.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.89ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 63.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 594.64ms. Allocated memory is still 96.5MB. Free memory was 63.8MB in the beginning and 46.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 732.83ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 45.7MB in the beginning and 74.2MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 147]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryDOUBLEComparisonOperation at line 146. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L143] double x = -1.0 / 0.0; [L144] CALL, EXPR atan_double(x) [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=14, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002] [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=14, ix=1141899264, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002] [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND FALSE !(ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0))) [L85] COND TRUE hx > 0 [L86] EXPR atanhi_atan[3] [L86] EXPR atanlo_atan[3] [L86] return atanhi_atan[3] + atanlo_atan[3]; [L144] RET, EXPR atan_double(x) [L144] double res = atan_double(x); [L146] COND TRUE res != -pi_o_2 VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002] [L147] reach_error() VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 18.02ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 15.32ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 22 mSDtfsCounter, 5 mSolverCounterSat, 0.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 22:30:19,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF --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 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:30:22,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:30:22,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:30:22,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:30:22,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:30:22,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:30:22,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:30:22,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:30:22,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:30:22,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:30:22,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:30:22,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:30:22,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:30:22,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:30:22,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:30:22,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:30:22,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:30:22,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:30:22,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:30:22,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:30:22,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:30:22,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:30:22,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:30:22,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:30:22,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:30:22,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:30:22,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:30:22,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:30:22,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:30:22,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:30:22,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:30:22,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:30:22,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:30:22,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:30:22,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:30:22,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:30:22,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:30:22,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:30:22,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:30:22,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:30:22,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:30:22,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:30:22,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:30:22,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:30:22,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:30:22,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:30:22,497 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:30:22,498 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:30:22,498 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:30:22,498 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:30:22,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:30:22,499 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:30:22,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:30:22,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:30:22,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:30:22,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:30:22,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:30:22,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:30:22,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:30:22,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:30:22,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:30:22,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:30:22,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:30:22,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:30:22,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:30:22,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:30:22,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:30:22,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:30:22,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:30:22,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:22,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:30:22,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:30:22,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:30:22,505 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:30:22,505 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:30:22,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:30:22,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:30:22,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:30:22,513 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 [2021-11-12 22:30:22,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:30:22,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:30:22,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:30:22,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:30:22,900 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:30:22,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-12 22:30:22,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/571e528bc/42cd67da4a8f4cd892d3ba1d620a7ba0/FLAG4361156c9 [2021-11-12 22:30:23,454 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:30:23,457 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-12 22:30:23,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/571e528bc/42cd67da4a8f4cd892d3ba1d620a7ba0/FLAG4361156c9 [2021-11-12 22:30:23,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/data/571e528bc/42cd67da4a8f4cd892d3ba1d620a7ba0 [2021-11-12 22:30:23,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:30:23,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:30:23,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:23,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:30:23,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:30:23,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:23" (1/1) ... [2021-11-12 22:30:23,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ba893c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:23, skipping insertion in model container [2021-11-12 22:30:23,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:23" (1/1) ... [2021-11-12 22:30:23,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:30:23,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:30:24,030 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_aee8da0d-04fd-464e-b4aa-8774d343dbd1/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-12 22:30:24,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:24,046 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:30:24,130 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_aee8da0d-04fd-464e-b4aa-8774d343dbd1/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-12 22:30:24,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:24,153 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:30:24,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24 WrapperNode [2021-11-12 22:30:24,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:24,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:24,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:30:24,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:30:24,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:24,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:30:24,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:30:24,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:30:24,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:30:24,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:30:24,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:30:24,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:30:24,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (1/1) ... [2021-11-12 22:30:24,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:24,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:30:24,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:30:24,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:30:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 22:30:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-12 22:30:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:30:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:30:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-12 22:30:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:30:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:30:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:30:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:30:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:30:40,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:30:40,083 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-12 22:30:40,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:40 BoogieIcfgContainer [2021-11-12 22:30:40,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:30:40,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:30:40,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:30:40,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:30:40,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:30:23" (1/3) ... [2021-11-12 22:30:40,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6178769e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:40, skipping insertion in model container [2021-11-12 22:30:40,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:24" (2/3) ... [2021-11-12 22:30:40,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6178769e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:40, skipping insertion in model container [2021-11-12 22:30:40,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:40" (3/3) ... [2021-11-12 22:30:40,095 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621b.c [2021-11-12 22:30:40,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:30:40,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:30:40,172 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:30:40,202 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 [2021-11-12 22:30:40,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:30:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-11-12 22:30:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 22:30:40,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:40,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:40,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1035664421, now seen corresponding path program 1 times [2021-11-12 22:30:40,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:40,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341826243] [2021-11-12 22:30:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:40,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:40,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:40,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:40,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:30:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:40,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:30:40,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:40,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:41,080 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:41,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341826243] [2021-11-12 22:30:41,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341826243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:41,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:41,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:30:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792889754] [2021-11-12 22:30:41,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:41,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:30:41,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:30:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:30:41,133 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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 5.0) internal successors, (10), 2 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) [2021-11-12 22:30:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:41,153 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-11-12 22:30:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:30:41,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2021-11-12 22:30:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:41,163 INFO L225 Difference]: With dead ends: 66 [2021-11-12 22:30:41,164 INFO L226 Difference]: Without dead ends: 31 [2021-11-12 22:30:41,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:30:41,171 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:41,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:30:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-12 22:30:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-12 22:30:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) [2021-11-12 22:30:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-12 22:30:41,207 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-12 22:30:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:41,207 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-12 22:30:41,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-11-12 22:30:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-12 22:30:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:30:41,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:41,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:41,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:41,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:41,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1843594333, now seen corresponding path program 1 times [2021-11-12 22:30:41,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:41,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791303173] [2021-11-12 22:30:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:41,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:41,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:41,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:41,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:30:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:41,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 22:30:41,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:42,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-12 22:30:44,695 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:30:44,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2021-11-12 22:30:45,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2021-11-12 22:30:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:46,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:49,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:30:49,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 70 [2021-11-12 22:30:49,414 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:30:49,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 72 [2021-11-12 22:30:49,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-12 22:30:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:51,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:51,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791303173] [2021-11-12 22:30:51,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791303173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:51,407 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:51,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 22:30:51,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684696810] [2021-11-12 22:30:51,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:51,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:30:51,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:30:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:30:51,412 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-11-12 22:30:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:51,441 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-11-12 22:30:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:30:51,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 [2021-11-12 22:30:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:51,443 INFO L225 Difference]: With dead ends: 35 [2021-11-12 22:30:51,444 INFO L226 Difference]: Without dead ends: 31 [2021-11-12 22:30:51,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:30:51,447 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 1.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:51,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 146 Invalid, 58 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 58 Unchecked, 1.93ms Time] [2021-11-12 22:30:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-12 22:30:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-12 22:30:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 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) [2021-11-12 22:30:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-11-12 22:30:51,462 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 12 [2021-11-12 22:30:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:51,462 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-11-12 22:30:51,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-11-12 22:30:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-11-12 22:30:51,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:30:51,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:51,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:51,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:30:51,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:51,683 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1339018296, now seen corresponding path program 1 times [2021-11-12 22:30:51,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:51,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992551844] [2021-11-12 22:30:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:51,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:51,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:51,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:51,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:30:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:52,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:30:52,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:52,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:54,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:54,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992551844] [2021-11-12 22:30:54,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992551844] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:54,007 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:54,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:30:54,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950569291] [2021-11-12 22:30:54,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:54,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:54,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:54,009 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-11-12 22:30:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:54,060 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-11-12 22:30:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:30:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) Word has length 12 [2021-11-12 22:30:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:54,063 INFO L225 Difference]: With dead ends: 35 [2021-11-12 22:30:54,063 INFO L226 Difference]: Without dead ends: 14 [2021-11-12 22:30:54,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:54,065 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 48.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:54,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 10 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 8 Unchecked, 48.11ms Time] [2021-11-12 22:30:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-12 22:30:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-12 22:30:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2021-11-12 22:30:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-12 22:30:54,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-11-12 22:30:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:54,069 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-12 22:30:54,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-11-12 22:30:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-12 22:30:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:30:54,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:54,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:54,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:54,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:54,289 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1317358715, now seen corresponding path program 1 times [2021-11-12 22:30:54,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:54,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166570261] [2021-11-12 22:30:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:54,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:54,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:54,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:30:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:54,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:30:54,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:55,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:56,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:56,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166570261] [2021-11-12 22:30:56,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166570261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:56,324 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:56,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:30:56,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296449233] [2021-11-12 22:30:56,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:56,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:30:56,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:56,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:30:56,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:30:56,326 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-12 22:30:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:56,328 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-11-12 22:30:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 [2021-11-12 22:30:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:56,329 INFO L225 Difference]: With dead ends: 18 [2021-11-12 22:30:56,329 INFO L226 Difference]: Without dead ends: 14 [2021-11-12 22:30:56,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:30:56,330 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:56,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 5 Unchecked, 0.06ms Time] [2021-11-12 22:30:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-12 22:30:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-12 22:30:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 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) [2021-11-12 22:30:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-11-12 22:30:56,334 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2021-11-12 22:30:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:56,334 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-11-12 22:30:56,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-12 22:30:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-11-12 22:30:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:30:56,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:56,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:56,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:56,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:56,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1317299133, now seen corresponding path program 1 times [2021-11-12 22:30:56,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:56,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347918795] [2021-11-12 22:30:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:56,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:56,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:56,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:56,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee8da0d-04fd-464e-b4aa-8774d343dbd1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:30:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:57,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 22:30:57,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:59,734 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-11-12 22:30:59,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 193 [2021-11-12 22:31:40,542 INFO L354 Elim1Store]: treesize reduction 293, result has 16.3 percent of original size [2021-11-12 22:31:40,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 234 treesize of output 273 [2021-11-12 22:31:40,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:40,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:31:40,996 INFO L354 Elim1Store]: treesize reduction 93, result has 8.8 percent of original size [2021-11-12 22:31:40,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 275 [2021-11-12 22:32:57,744 INFO L354 Elim1Store]: treesize reduction 166, result has 40.9 percent of original size [2021-11-12 22:32:57,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 306 treesize of output 402 [2021-11-12 22:32:57,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:57,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:57,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:57,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:57,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:57,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:57,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:57,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:58,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:58,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:32:58,862 INFO L354 Elim1Store]: treesize reduction 146, result has 18.0 percent of original size [2021-11-12 22:32:58,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 392 treesize of output 421 [2021-11-12 22:36:16,040 WARN L227 SmtUtils]: Spent 15.79s on a formula simplification. DAG size of input: 152 DAG size of output: 108 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:36:27,983 WARN L227 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 114 DAG size of output: 86 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:36:27,984 INFO L354 Elim1Store]: treesize reduction 96, result has 68.5 percent of original size [2021-11-12 22:36:27,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 284 treesize of output 390