./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032b.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_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/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_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/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_f9dc350c-ec98-4a90-9c36-fd27a621b249/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 5bd2dc63bd4c1053d566560c0f66613385a5c020fbf5a5055f1c4bb27faaeed8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:30,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:30,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:30,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:30,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:30,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:30,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:30,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:30,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:30,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:30,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:30,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:30,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:30,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:30,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:30,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:30,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:30,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:30,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:30,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:30,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:30,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:30,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:30,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:30,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:30,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:30,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:30,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:30,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:30,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:30,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:30,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:30,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:30,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:30,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:30,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:30,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:30,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:30,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:30,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:30,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:30,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:53:30,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:30,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:30,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:30,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:30,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:30,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:30,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:30,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:53:30,843 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:30,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:30,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:53:30,845 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:53:30,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:30,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:53:30,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:53:30,846 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:53:30,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:30,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:53:30,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:53:30,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:53:30,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:30,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:30,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:30,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:30,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:30,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:53:30,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:30,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:30,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:30,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:30,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:30,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:30,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:30,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:30,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:30,855 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:53:30,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:53:30,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:30,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:30,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:30,856 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_f9dc350c-ec98-4a90-9c36-fd27a621b249/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bd2dc63bd4c1053d566560c0f66613385a5c020fbf5a5055f1c4bb27faaeed8 [2021-11-12 22:53:31,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:31,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:31,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:31,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:31,234 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:31,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/double_req_bl_1032b.c [2021-11-12 22:53:31,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/f38530731/b3f2d6be27f248a79af3dc211fb40002/FLAGbb446b802 [2021-11-12 22:53:31,823 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:31,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/sv-benchmarks/c/float-newlib/double_req_bl_1032b.c [2021-11-12 22:53:31,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/f38530731/b3f2d6be27f248a79af3dc211fb40002/FLAGbb446b802 [2021-11-12 22:53:32,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/f38530731/b3f2d6be27f248a79af3dc211fb40002 [2021-11-12 22:53:32,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:32,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:32,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:32,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:32,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:32,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad58dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32, skipping insertion in model container [2021-11-12 22:53:32,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:32,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:32,484 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_f9dc350c-ec98-4a90-9c36-fd27a621b249/sv-benchmarks/c/float-newlib/double_req_bl_1032b.c[2284,2297] [2021-11-12 22:53:32,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:32,496 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:53:32,524 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_f9dc350c-ec98-4a90-9c36-fd27a621b249/sv-benchmarks/c/float-newlib/double_req_bl_1032b.c[2284,2297] [2021-11-12 22:53:32,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:32,541 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:53:32,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32 WrapperNode [2021-11-12 22:53:32,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:32,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:32,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:53:32,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:53:32,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:32,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:53:32,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:53:32,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:53:32,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:53:32,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:53:32,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:53:32,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:53:32,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (1/1) ... [2021-11-12 22:53:32,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:32,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:32,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:53:32,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:53:32,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:53:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:53:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-12 22:53:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:53:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-12 22:53:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:53:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:53:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:53:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:53:33,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:33,163 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-12 22:53:33,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:33 BoogieIcfgContainer [2021-11-12 22:53:33,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:33,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:33,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:33,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:33,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:53:32" (1/3) ... [2021-11-12 22:53:33,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61188dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:33, skipping insertion in model container [2021-11-12 22:53:33,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:32" (2/3) ... [2021-11-12 22:53:33,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61188dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:33, skipping insertion in model container [2021-11-12 22:53:33,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:33" (3/3) ... [2021-11-12 22:53:33,177 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2021-11-12 22:53:33,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:33,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:33,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:33,246 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 22:53:33,246 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:53:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 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 22:53:33,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:53:33,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:33,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:33,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:33,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:33,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1810710899, now seen corresponding path program 1 times [2021-11-12 22:53:33,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:33,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149654143] [2021-11-12 22:53:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:33,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:33,463 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 22:53:33,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:33,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149654143] [2021-11-12 22:53:33,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149654143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:33,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:33,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:53:33,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907810845] [2021-11-12 22:53:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:33,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:53:33,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:53:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:53:33,530 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 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 22:53:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:33,604 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2021-11-12 22:53:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:53:33,607 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 22:53:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:33,616 INFO L225 Difference]: With dead ends: 43 [2021-11-12 22:53:33,616 INFO L226 Difference]: Without dead ends: 20 [2021-11-12 22:53:33,619 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 22:53:33,624 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:33,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.78ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 52.73ms Time] [2021-11-12 22:53:33,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-12 22:53:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-12 22:53:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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 22:53:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-11-12 22:53:33,664 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 9 [2021-11-12 22:53:33,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:33,664 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-12 22:53:33,665 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 22:53:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-11-12 22:53:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 22:53:33,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:33,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:33,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:53:33,668 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:33,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1732446686, now seen corresponding path program 1 times [2021-11-12 22:53:33,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:33,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88928189] [2021-11-12 22:53:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:33,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:53:33,725 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:53:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:53:33,788 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:53:33,789 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:53:33,791 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:53:33,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:53:33,806 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:53:33,820 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:53:33,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:53:33 BoogieIcfgContainer [2021-11-12 22:53:33,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:53:33,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:53:33,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:53:33,863 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:53:33,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:33" (3/4) ... [2021-11-12 22:53:33,872 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:53:33,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:53:33,874 INFO L158 Benchmark]: Toolchain (without parser) took 1663.39ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 47.4MB in the beginning and 75.2MB in the end (delta: -27.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:33,875 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 12.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:33,881 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.56ms. Allocated memory is still 88.1MB. Free memory was 47.1MB in the beginning and 63.5MB in the end (delta: -16.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:53:33,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.05ms. Allocated memory is still 88.1MB. Free memory was 63.5MB in the beginning and 61.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:33,885 INFO L158 Benchmark]: Boogie Preprocessor took 35.13ms. Allocated memory is still 88.1MB. Free memory was 61.7MB in the beginning and 60.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:33,886 INFO L158 Benchmark]: RCFGBuilder took 541.40ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 46.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 22:53:33,887 INFO L158 Benchmark]: TraceAbstraction took 688.12ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 45.8MB in the beginning and 75.4MB in the end (delta: -29.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:33,888 INFO L158 Benchmark]: Witness Printer took 10.73ms. Allocated memory is still 109.1MB. Free memory was 75.4MB in the beginning and 75.2MB in the end (delta: 164.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:33,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 12.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.56ms. Allocated memory is still 88.1MB. Free memory was 47.1MB in the beginning and 63.5MB in the end (delta: -16.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.05ms. Allocated memory is still 88.1MB. Free memory was 63.5MB in the beginning and 61.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.13ms. Allocated memory is still 88.1MB. Free memory was 61.7MB in the beginning and 60.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 541.40ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 46.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 688.12ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 45.8MB in the beginning and 75.4MB in the end (delta: -29.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 10.73ms. Allocated memory is still 109.1MB. Free memory was 75.4MB in the beginning and 75.2MB in the end (delta: 164.1kB). 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: 93]: 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 88, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 92. Possible FailurePath: [L88] double x = -0.0; [L89] CALL, EXPR round_double(x) [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; VAL [\old(x)=1127219201, x=1127219201] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=1127219201, exponent_less_1023=52, lsw=1127219202, msw=0, x=1127219201] [L29] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=1127219201, exponent_less_1023=52, lsw=1127219202, msw=0, x=1127219201] [L43] COND TRUE exponent_less_1023 > 51 [L44] COND FALSE !(exponent_less_1023 == 1024) [L47] return x; VAL [\old(x)=1127219201, \result=1127219201, exponent_less_1023=52, lsw=1127219202, msw=0, x=1127219201] [L89] RET, EXPR round_double(x) [L89] double res = round_double(x); [L92] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=1127219201, res == -0.0 && __signbit_double(res) == 1=0, x=1127219201] [L92] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L93] reach_error() VAL [res=1127219201, x=1127219201] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 52.73ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 26.31ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 21 mSDtfsCounter, 6 mSolverCounterSat, 0.78ms 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=22occurred 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, 19 NumberOfCodeBlocks, 19 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 22:53:33,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/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_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/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_f9dc350c-ec98-4a90-9c36-fd27a621b249/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 5bd2dc63bd4c1053d566560c0f66613385a5c020fbf5a5055f1c4bb27faaeed8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:36,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:36,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:36,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:36,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:36,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:36,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:36,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:36,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:36,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:36,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:36,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:36,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:36,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:36,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:36,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:36,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:36,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:36,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:36,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:36,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:36,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:36,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:36,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:36,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:36,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:36,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:36,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:36,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:36,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:36,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:36,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:36,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:36,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:36,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:36,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:36,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:36,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:36,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:36,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:36,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:36,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:53:36,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:36,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:36,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:36,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:36,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:36,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:36,869 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:36,869 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:36,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:36,870 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:36,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:36,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:53:36,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:53:36,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:36,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:36,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:36,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:36,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:36,873 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:53:36,873 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:53:36,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:53:36,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:36,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:36,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:36,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:36,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:53:36,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:36,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:36,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:36,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:36,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:36,877 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:53:36,877 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:53:36,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:36,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:36,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:36,878 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_f9dc350c-ec98-4a90-9c36-fd27a621b249/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bd2dc63bd4c1053d566560c0f66613385a5c020fbf5a5055f1c4bb27faaeed8 [2021-11-12 22:53:37,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:37,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:37,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:37,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:37,390 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:37,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/double_req_bl_1032b.c [2021-11-12 22:53:37,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/a62387813/893a05a21f45477c9c861f8ea6c1dbe4/FLAG6e0c7c9ef [2021-11-12 22:53:38,113 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:38,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/sv-benchmarks/c/float-newlib/double_req_bl_1032b.c [2021-11-12 22:53:38,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/a62387813/893a05a21f45477c9c861f8ea6c1dbe4/FLAG6e0c7c9ef [2021-11-12 22:53:38,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/data/a62387813/893a05a21f45477c9c861f8ea6c1dbe4 [2021-11-12 22:53:38,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:38,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:38,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:38,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:38,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:38,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b29cabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38, skipping insertion in model container [2021-11-12 22:53:38,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:38,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:38,709 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_f9dc350c-ec98-4a90-9c36-fd27a621b249/sv-benchmarks/c/float-newlib/double_req_bl_1032b.c[2284,2297] [2021-11-12 22:53:38,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:38,751 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:53:38,826 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_f9dc350c-ec98-4a90-9c36-fd27a621b249/sv-benchmarks/c/float-newlib/double_req_bl_1032b.c[2284,2297] [2021-11-12 22:53:38,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:38,858 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:53:38,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38 WrapperNode [2021-11-12 22:53:38,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:38,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:38,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:53:38,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:53:38,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:38,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:53:38,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:53:38,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:53:38,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:38,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:39,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:39,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:39,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:53:39,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:53:39,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:53:39,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:53:39,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (1/1) ... [2021-11-12 22:53:39,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:39,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:53:39,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:53:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 22:53:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-12 22:53:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:53:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:53:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:53:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:53:39,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:53:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:53:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:53:39,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:39,696 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-12 22:53:39,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:39 BoogieIcfgContainer [2021-11-12 22:53:39,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:39,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:39,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:39,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:39,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:53:38" (1/3) ... [2021-11-12 22:53:39,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318a7589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:39, skipping insertion in model container [2021-11-12 22:53:39,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:38" (2/3) ... [2021-11-12 22:53:39,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318a7589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:39, skipping insertion in model container [2021-11-12 22:53:39,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:39" (3/3) ... [2021-11-12 22:53:39,709 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2021-11-12 22:53:39,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:39,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:39,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:39,799 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 22:53:39,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:53:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 29 states have internal predecessors, (45), 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 22:53:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:53:39,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:39,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:39,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2068179301, now seen corresponding path program 1 times [2021-11-12 22:53:39,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:39,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797065084] [2021-11-12 22:53:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:39,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:39,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:39,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:53:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:39,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:53:39,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:40,056 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 22:53:40,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:40,131 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 22:53:40,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:40,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797065084] [2021-11-12 22:53:40,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797065084] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:40,135 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:40,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:53:40,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161424813] [2021-11-12 22:53:40,139 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:40,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:53:40,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:53:40,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:53:40,213 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 29 states have internal predecessors, (45), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 22:53:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:40,250 INFO L93 Difference]: Finished difference Result 58 states and 88 transitions. [2021-11-12 22:53:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:53:40,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-12 22:53:40,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:40,264 INFO L225 Difference]: With dead ends: 58 [2021-11-12 22:53:40,264 INFO L226 Difference]: Without dead ends: 27 [2021-11-12 22:53:40,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 22:53:40,273 INFO L933 BasicCegarLoop]: 38 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, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:40,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:53:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-12 22:53:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-12 22:53:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 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 22:53:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-12 22:53:40,354 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 11 [2021-11-12 22:53:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:40,370 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-12 22:53:40,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 22:53:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-12 22:53:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:53:40,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:40,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:40,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:40,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:40,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1606867070, now seen corresponding path program 1 times [2021-11-12 22:53:40,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:40,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311375610] [2021-11-12 22:53:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:40,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:40,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:40,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:40,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:53:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:40,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:53:40,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:41,046 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 22:53:41,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:41,244 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 22:53:41,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:41,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311375610] [2021-11-12 22:53:41,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311375610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:41,257 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:41,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:53:41,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660644309] [2021-11-12 22:53:41,258 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:41,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:53:41,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:41,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:53:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:53:41,262 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:41,516 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-11-12 22:53:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:41,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 22:53:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:41,519 INFO L225 Difference]: With dead ends: 52 [2021-11-12 22:53:41,520 INFO L226 Difference]: Without dead ends: 39 [2021-11-12 22:53:41,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:53:41,523 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 17 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 212.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:41,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 128 Invalid, 24 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 10 Unchecked, 212.84ms Time] [2021-11-12 22:53:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-12 22:53:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-11-12 22:53:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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 22:53:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-12 22:53:41,531 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2021-11-12 22:53:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:41,532 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-12 22:53:41,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-12 22:53:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:53:41,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:41,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:41,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:53:41,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:41,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:41,766 INFO L85 PathProgramCache]: Analyzing trace with hash -504714538, now seen corresponding path program 1 times [2021-11-12 22:53:41,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:41,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045194320] [2021-11-12 22:53:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:41,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:41,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:41,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:53:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:41,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:53:41,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:42,059 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 22:53:42,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:42,224 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 22:53:42,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:42,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045194320] [2021-11-12 22:53:42,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045194320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:42,226 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:42,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:53:42,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142256420] [2021-11-12 22:53:42,227 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:42,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:53:42,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:53:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:53:42,229 INFO L87 Difference]: Start difference. First operand 26 states and 32 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 22:53:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:42,337 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2021-11-12 22:53:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:53:42,339 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 22:53:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:42,342 INFO L225 Difference]: With dead ends: 51 [2021-11-12 22:53:42,342 INFO L226 Difference]: Without dead ends: 34 [2021-11-12 22:53:42,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:53:42,347 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 30 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 48.74ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:42,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 131 Invalid, 35 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 17 Unchecked, 48.74ms Time] [2021-11-12 22:53:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-12 22:53:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2021-11-12 22:53:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 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 22:53:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-12 22:53:42,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2021-11-12 22:53:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:42,363 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-12 22:53:42,364 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 22:53:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-12 22:53:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 22:53:42,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:42,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:42,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:42,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:42,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:42,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1962860917, now seen corresponding path program 1 times [2021-11-12 22:53:42,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:42,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680061661] [2021-11-12 22:53:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:42,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:42,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:42,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:42,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:53:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:42,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:53:42,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:42,931 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 22:53:42,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:43,085 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 22:53:43,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:43,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680061661] [2021-11-12 22:53:43,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680061661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:43,090 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:43,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:53:43,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274550404] [2021-11-12 22:53:43,091 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:43,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:53:43,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:53:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:53:43,092 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:43,131 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-11-12 22:53:43,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:43,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 22:53:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:43,138 INFO L225 Difference]: With dead ends: 34 [2021-11-12 22:53:43,138 INFO L226 Difference]: Without dead ends: 21 [2021-11-12 22:53:43,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:53:43,140 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 16.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:43,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 13 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 8 Unchecked, 16.16ms Time] [2021-11-12 22:53:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-12 22:53:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-12 22:53:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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 22:53:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-12 22:53:43,150 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2021-11-12 22:53:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:43,151 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-12 22:53:43,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-12 22:53:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 22:53:43,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:43,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:43,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:43,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:43,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1282802547, now seen corresponding path program 1 times [2021-11-12 22:53:43,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:43,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097874651] [2021-11-12 22:53:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:43,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:43,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:43,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:43,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:53:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:43,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:53:43,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:43,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2021-11-12 22:53:43,656 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 22:53:43,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:43,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 22:53:43,821 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 22:53:43,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:43,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097874651] [2021-11-12 22:53:43,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097874651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:43,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:43,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-12 22:53:43,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26103882] [2021-11-12 22:53:43,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:43,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:53:43,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:53:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:53:43,825 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:44,064 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-11-12 22:53:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:53:44,065 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 22:53:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:44,066 INFO L225 Difference]: With dead ends: 24 [2021-11-12 22:53:44,066 INFO L226 Difference]: Without dead ends: 21 [2021-11-12 22:53:44,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:53:44,068 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 32.08ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:44,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 44 Invalid, 20 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 8 Unchecked, 32.08ms Time] [2021-11-12 22:53:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-12 22:53:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-12 22:53:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.0) internal successors, (20), 20 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 22:53:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-11-12 22:53:44,076 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2021-11-12 22:53:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:44,076 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-11-12 22:53:44,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-11-12 22:53:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:53:44,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:44,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:44,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:44,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:44,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash 218634850, now seen corresponding path program 1 times [2021-11-12 22:53:44,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:44,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899322970] [2021-11-12 22:53:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:44,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:44,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:44,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:44,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:53:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:44,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 22:53:44,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:44,426 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 34 treesize of output 34 [2021-11-12 22:53:44,954 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-12 22:53:44,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 84 treesize of output 90 [2021-11-12 22:53:45,430 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:45,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 68 treesize of output 40 [2021-11-12 22:53:45,850 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 22:53:45,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:48,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:48,794 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 118 treesize of output 97 [2021-11-12 22:53:48,838 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:48,839 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 97 treesize of output 95 [2021-11-12 22:53:48,867 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 22:53:49,128 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 22:53:49,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:49,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899322970] [2021-11-12 22:53:49,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899322970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:49,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:49,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 18 [2021-11-12 22:53:49,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561091412] [2021-11-12 22:53:49,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:49,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 22:53:49,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 22:53:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=264, Unknown=1, NotChecked=0, Total=306 [2021-11-12 22:53:49,132 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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 22:53:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:49,302 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-11-12 22:53:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:53:49,303 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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) Word has length 20 [2021-11-12 22:53:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:49,304 INFO L225 Difference]: With dead ends: 21 [2021-11-12 22:53:49,304 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:53:49,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=53, Invalid=326, Unknown=1, NotChecked=0, Total=380 [2021-11-12 22:53:49,306 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 18.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:49,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 82 Invalid, 42 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 35 Unchecked, 18.21ms Time] [2021-11-12 22:53:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:53:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:53:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:49,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:53:49,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-11-12 22:53:49,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:49,308 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:53:49,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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 22:53:49,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:53:49,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:53:49,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:53:49,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:49,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:49,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:53:49,613 INFO L861 garLoopResultBuilder]: At program point L97(lines 80 98) the Hoare annotation is: true [2021-11-12 22:53:49,613 INFO L858 garLoopResultBuilder]: For program point L93(line 93) no Hoare annotation was computed. [2021-11-12 22:53:49,613 INFO L854 garLoopResultBuilder]: At program point L77(lines 68 78) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and |ULTIMATE.start_main_#t~short13#1| (bvslt |ULTIMATE.start_round_double_~exponent_less_1023~0#1| (_ bv20 32)) (fp.eq |ULTIMATE.start_round_double_~x#1| .cse0) (= (_ bv1 32) |ULTIMATE.start___signbit_double_#res#1|) (fp.eq |ULTIMATE.start_round_double_#res#1| .cse0))) [2021-11-12 22:53:49,613 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 47) no Hoare annotation was computed. [2021-11-12 22:53:49,614 INFO L854 garLoopResultBuilder]: At program point L65(lines 19 66) the Hoare annotation is: (let ((.cse3 (fp.neg (_ +zero 11 53)))) (and (exists ((|v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64))) (let ((.cse2 (select |#memory_int| |v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11|))) (let ((.cse0 (select .cse2 (_ bv4 32)))) (and (= .cse0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|)) (fp.neg (_ +zero 11 53))) (= (let ((.cse1 (concat .cse0 (select .cse2 (_ bv0 32))))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))) |ULTIMATE.start_round_double_#res#1|))))) (bvslt |ULTIMATE.start_round_double_~exponent_less_1023~0#1| (_ bv20 32)) (fp.eq |ULTIMATE.start_round_double_~x#1| .cse3) (fp.eq |ULTIMATE.start_round_double_#res#1| .cse3))) [2021-11-12 22:53:49,614 INFO L858 garLoopResultBuilder]: For program point L32(lines 32 33) no Hoare annotation was computed. [2021-11-12 22:53:49,614 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 22:53:49,614 INFO L858 garLoopResultBuilder]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2021-11-12 22:53:49,614 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:53:49,614 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 22:53:49,614 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2021-11-12 22:53:49,615 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-11-12 22:53:49,615 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:53:49,615 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 58) no Hoare annotation was computed. [2021-11-12 22:53:49,615 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-11-12 22:53:49,615 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2021-11-12 22:53:49,618 INFO L858 garLoopResultBuilder]: For program point L71-1(lines 71 75) no Hoare annotation was computed. [2021-11-12 22:53:49,618 INFO L854 garLoopResultBuilder]: At program point L71-2(lines 71 75) the Hoare annotation is: (let ((.cse3 (fp.neg (_ +zero 11 53)))) (and (exists ((|v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64))) (let ((.cse2 (select |#memory_int| |v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11|))) (let ((.cse0 (select .cse2 (_ bv4 32)))) (and (= .cse0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|)) (= (let ((.cse1 (concat .cse0 (select .cse2 (_ bv0 32))))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))) |ULTIMATE.start___signbit_double_~x#1|) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|)) (fp.neg (_ +zero 11 53))))))) |ULTIMATE.start_main_#t~short13#1| (bvslt |ULTIMATE.start_round_double_~exponent_less_1023~0#1| (_ bv20 32)) (fp.eq |ULTIMATE.start_round_double_~x#1| .cse3) (fp.eq |ULTIMATE.start_round_double_#res#1| .cse3))) [2021-11-12 22:53:49,619 INFO L858 garLoopResultBuilder]: For program point L71-3(lines 71 75) no Hoare annotation was computed. [2021-11-12 22:53:49,619 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 42) no Hoare annotation was computed. [2021-11-12 22:53:49,619 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-11-12 22:53:49,620 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 64) no Hoare annotation was computed. [2021-11-12 22:53:49,620 INFO L858 garLoopResultBuilder]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2021-11-12 22:53:49,620 INFO L858 garLoopResultBuilder]: For program point L92-2(lines 92 95) no Hoare annotation was computed. [2021-11-12 22:53:49,620 INFO L858 garLoopResultBuilder]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2021-11-12 22:53:49,624 INFO L858 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-11-12 22:53:49,625 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (= |ULTIMATE.start_round_double_~x#1| (fp.neg (_ +zero 11 53))) [2021-11-12 22:53:49,625 INFO L858 garLoopResultBuilder]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2021-11-12 22:53:49,625 INFO L858 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-11-12 22:53:49,625 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 58) no Hoare annotation was computed. [2021-11-12 22:53:49,628 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-12 22:53:49,630 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:53:49,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,639 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,639 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,639 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,640 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,640 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,640 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,640 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,641 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,641 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,650 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,651 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,651 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,651 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,651 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,652 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,652 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,652 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,652 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,653 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,653 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,663 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,663 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,663 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,663 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,664 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,666 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,666 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,667 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,670 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,679 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,679 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,680 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,680 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,680 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,680 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,680 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,681 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,681 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,681 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,681 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:53:49 BoogieIcfgContainer [2021-11-12 22:53:49,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:53:49,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:53:49,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:53:49,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:53:49,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:39" (3/4) ... [2021-11-12 22:53:49,687 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:53:49,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-12 22:53:49,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-12 22:53:49,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:53:49,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:53:49,738 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11 : bv32, v_skolemized_q#valueAsBitvector_8 : bv64 :: (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE((unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[63:63], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[62:52], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[51:0]) == \result) && ~bvslt32(exponent_less_1023, 20bv32)) && ~fp.eq~DOUBLE(x, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()))) && ~fp.eq~DOUBLE(\result, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) [2021-11-12 22:53:49,740 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\exists v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11 : bv32, v_skolemized_q#valueAsBitvector_8 : bv64 :: (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp~LONGDOUBLE((unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[63:63], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[62:52], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[51:0]) == x) && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~bvslt32(exponent_less_1023, 20bv32)) && ~fp.eq~DOUBLE(x, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()))) && ~fp.eq~DOUBLE(\result, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) [2021-11-12 22:53:49,740 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-res == -0.0 && __signbit_double(res) == 1-aux && ~bvslt32(exponent_less_1023, 20bv32)) && ~fp.eq~DOUBLE(x, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()))) && 1bv32 == \result) && ~fp.eq~DOUBLE(\result, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) [2021-11-12 22:53:49,767 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:53:49,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:53:49,768 INFO L158 Benchmark]: Toolchain (without parser) took 11338.15ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 65.3MB in the beginning and 61.3MB in the end (delta: 4.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2021-11-12 22:53:49,768 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:49,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.64ms. Allocated memory is still 81.8MB. Free memory was 65.1MB in the beginning and 62.4MB in the end (delta: 2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:53:49,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.42ms. Allocated memory is still 81.8MB. Free memory was 62.2MB in the beginning and 60.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:49,770 INFO L158 Benchmark]: Boogie Preprocessor took 83.42ms. Allocated memory is still 81.8MB. Free memory was 60.6MB in the beginning and 59.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:53:49,770 INFO L158 Benchmark]: RCFGBuilder took 671.04ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 45.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:53:49,771 INFO L158 Benchmark]: TraceAbstraction took 9981.58ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 45.1MB in the beginning and 65.5MB in the end (delta: -20.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-11-12 22:53:49,771 INFO L158 Benchmark]: Witness Printer took 83.60ms. Allocated memory is still 109.1MB. Free memory was 65.5MB in the beginning and 61.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:53:49,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.64ms. Allocated memory is still 81.8MB. Free memory was 65.1MB in the beginning and 62.4MB in the end (delta: 2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.42ms. Allocated memory is still 81.8MB. Free memory was 62.2MB in the beginning and 60.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.42ms. Allocated memory is still 81.8MB. Free memory was 60.6MB in the beginning and 59.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 671.04ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 45.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9981.58ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 45.1MB in the beginning and 65.5MB in the end (delta: -20.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 83.60ms. Allocated memory is still 109.1MB. Free memory was 65.5MB in the beginning and 61.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 328.03ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 492 SdHoareTripleChecker+Invalid, 302.53ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 78 IncrementalHoareTripleChecker+Unchecked, 350 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 142 mSDtfsCounter, 51 mSolverCounterSat, 9.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 164 HoareAnnotationTreeSize, 5 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 162 ConstructedInterpolants, 48 QuantifiedInterpolants, 1827 SizeOfPredicates, 42 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 71]: Loop Invariant [2021-11-12 22:53:49,808 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,808 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,808 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,808 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,811 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,812 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,813 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,813 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] Derived loop invariant: ((((\exists v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11 : bv32, v_skolemized_q#valueAsBitvector_8 : bv64 :: (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp~LONGDOUBLE((unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[63:63], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[62:52], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[51:0]) == x) && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~bvslt32(exponent_less_1023, 20bv32)) && ~fp.eq~DOUBLE(x, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()))) && ~fp.eq~DOUBLE(\result, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (((aux-res == -0.0 && __signbit_double(res) == 1-aux && ~bvslt32(exponent_less_1023, 20bv32)) && ~fp.eq~DOUBLE(x, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()))) && 1bv32 == \result) && ~fp.eq~DOUBLE(\result, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant [2021-11-12 22:53:49,821 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,821 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,822 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,822 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,822 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,822 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,822 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-11-12 22:53:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,826 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,826 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,826 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] [2021-11-12 22:53:49,826 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11,QUANTIFIED] Derived loop invariant: (((\exists v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11 : bv32, v_skolemized_q#valueAsBitvector_8 : bv64 :: (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE((unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[63:63], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[62:52], (unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][4bv32] ++ unknown-#memory_int-unknown[v_ULTIMATE.start_round_double_~#iw_u~0#1.base_11][0bv32])[51:0]) == \result) && ~bvslt32(exponent_less_1023, 20bv32)) && ~fp.eq~DOUBLE(x, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()))) && ~fp.eq~DOUBLE(\result, ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) RESULT: Ultimate proved your program to be correct! [2021-11-12 22:53:49,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9dc350c-ec98-4a90-9c36-fd27a621b249/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 Writing output log to file Ultimate.log Result: TRUE