./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh --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 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:09:05,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:09:05,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:09:05,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:09:05,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:09:05,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:09:05,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:09:05,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:09:05,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:09:05,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:09:05,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:09:05,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:09:05,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:09:05,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:09:05,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:09:05,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:09:05,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:09:05,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:09:05,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:09:05,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:09:05,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:09:05,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:09:05,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:09:05,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:09:05,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:09:05,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:09:05,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:09:05,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:09:05,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:09:05,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:09:05,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:09:05,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:09:05,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:09:05,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:09:05,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:09:05,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:09:05,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:09:05,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:09:05,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:09:05,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:09:05,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:09:05,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:09:05,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:09:05,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:09:05,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:09:05,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:09:05,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:09:05,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:09:05,771 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:09:05,771 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:09:05,771 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:09:05,771 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:09:05,772 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:09:05,772 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:09:05,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:09:05,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:09:05,772 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:09:05,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:09:05,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:09:05,772 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:09:05,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:09:05,773 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:09:05,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:09:05,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:09:05,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:09:05,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:09:05,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:09:05,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:09:05,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:09:05,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 [2022-12-14 09:09:05,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:09:05,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:09:05,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:09:05,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:09:05,987 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:09:05,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-12-14 09:09:08,580 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:09:08,730 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:09:08,730 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-12-14 09:09:08,738 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data/43d28cc6c/6874c1a86a8142fd9d81606190df9f85/FLAG8eba92336 [2022-12-14 09:09:08,752 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data/43d28cc6c/6874c1a86a8142fd9d81606190df9f85 [2022-12-14 09:09:08,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:09:08,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:09:08,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:09:08,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:09:08,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:09:08,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:09:08" (1/1) ... [2022-12-14 09:09:08,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37860e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:08, skipping insertion in model container [2022-12-14 09:09:08,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:09:08" (1/1) ... [2022-12-14 09:09:08,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:09:08,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:09:08,949 WARN L237 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_84c5476e-e966-43e8-830a-3ca497f826e1/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-12-14 09:09:08,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:09:08,959 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:09:08,992 WARN L237 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_84c5476e-e966-43e8-830a-3ca497f826e1/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-12-14 09:09:08,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:09:09,003 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:09:09,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09 WrapperNode [2022-12-14 09:09:09,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:09:09,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:09:09,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:09:09,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:09:09,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,037 INFO L138 Inliner]: procedures = 19, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 262 [2022-12-14 09:09:09,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:09:09,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:09:09,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:09:09,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:09:09,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:09:09,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:09:09,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:09:09,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:09:09,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (1/1) ... [2022-12-14 09:09:09,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:09:09,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:09,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:09:09,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:09:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:09:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:09:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:09:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-12-14 09:09:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:09:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-12-14 09:09:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:09:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:09:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:09:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:09:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-12-14 09:09:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-12-14 09:09:09,190 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:09:09,191 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:09:09,500 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:09:09,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:09:09,580 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-12-14 09:09:09,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:09:09 BoogieIcfgContainer [2022-12-14 09:09:09,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:09:09,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:09:09,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:09:09,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:09:09,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:09:08" (1/3) ... [2022-12-14 09:09:09,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ebdb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:09:09, skipping insertion in model container [2022-12-14 09:09:09,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:09" (2/3) ... [2022-12-14 09:09:09,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ebdb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:09:09, skipping insertion in model container [2022-12-14 09:09:09,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:09:09" (3/3) ... [2022-12-14 09:09:09,591 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2022-12-14 09:09:09,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:09:09,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:09:09,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:09:09,642 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@680c4a29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:09:09,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:09:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 69 states have (on average 1.710144927536232) internal successors, (118), 70 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:09:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:09:09,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:09,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:09,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash 659008403, now seen corresponding path program 1 times [2022-12-14 09:09:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:09,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611482255] [2022-12-14 09:09:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:09,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:09,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:09:09,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611482255] [2022-12-14 09:09:09,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611482255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:09,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:09,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:09:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296532053] [2022-12-14 09:09:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:09,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:09:09,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:09:09,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:09:09,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:09:09,832 INFO L87 Difference]: Start difference. First operand has 74 states, 69 states have (on average 1.710144927536232) internal successors, (118), 70 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:09,877 INFO L93 Difference]: Finished difference Result 147 states and 245 transitions. [2022-12-14 09:09:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:09:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 09:09:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:09,885 INFO L225 Difference]: With dead ends: 147 [2022-12-14 09:09:09,885 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 09:09:09,887 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:09:09,890 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:09,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:09:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 09:09:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-14 09:09:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:09:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-12-14 09:09:09,919 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 14 [2022-12-14 09:09:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:09,920 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-12-14 09:09:09,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:09:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-12-14 09:09:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 09:09:09,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:09,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:09:09,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash -568320866, now seen corresponding path program 1 times [2022-12-14 09:09:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:09:09,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861678334] [2022-12-14 09:09:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:09:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:09:09,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:09:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:09:10,045 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:09:10,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:09:10,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:09:10,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:09:10,051 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 09:09:10,054 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:09:10,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:09:10 BoogieIcfgContainer [2022-12-14 09:09:10,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:09:10,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:09:10,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:09:10,071 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:09:10,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:09:09" (3/4) ... [2022-12-14 09:09:10,074 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 09:09:10,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:09:10,074 INFO L158 Benchmark]: Toolchain (without parser) took 1318.01ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 81.7MB in the end (delta: 36.2MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2022-12-14 09:09:10,074 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:09:10,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.81ms. Allocated memory is still 157.3MB. Free memory was 117.8MB in the beginning and 103.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 09:09:10,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.14ms. Allocated memory is still 157.3MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:09:10,075 INFO L158 Benchmark]: Boogie Preprocessor took 28.72ms. Allocated memory is still 157.3MB. Free memory was 101.6MB in the beginning and 99.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:09:10,076 INFO L158 Benchmark]: RCFGBuilder took 516.48ms. Allocated memory is still 157.3MB. Free memory was 99.0MB in the beginning and 120.1MB in the end (delta: -21.0MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-12-14 09:09:10,076 INFO L158 Benchmark]: TraceAbstraction took 484.97ms. Allocated memory is still 157.3MB. Free memory was 119.5MB in the beginning and 81.7MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 09:09:10,076 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 157.3MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:09:10,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.81ms. Allocated memory is still 157.3MB. Free memory was 117.8MB in the beginning and 103.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.14ms. Allocated memory is still 157.3MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.72ms. Allocated memory is still 157.3MB. Free memory was 101.6MB in the beginning and 99.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.48ms. Allocated memory is still 157.3MB. Free memory was 99.0MB in the beginning and 120.1MB in the end (delta: -21.0MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * TraceAbstraction took 484.97ms. Allocated memory is still 157.3MB. Free memory was 119.5MB in the beginning and 81.7MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 157.3MB. Free memory is still 81.7MB. 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: 241]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 213, overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L234] float x = __VERIFIER_nondet_float(); [L235] float y = 0.0f / 0.0f; [L237] CALL isfinite_float(x) [L217] __int32_t ix; VAL [\old(x)=4294967329, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329] [L219] ieee_float_shape_type gf_u; [L220] gf_u.value = (x) [L221] EXPR gf_u.word [L221] (ix) = gf_u.word [L223] ix &= 0x7fffffff [L224] return (((ix) < 0x7f800000L)); [L237] RET isfinite_float(x) [L237] COND TRUE isfinite_float(x) [L238] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967329, b=4294967329, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967329, b=4294967329, ha=-251658231, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND TRUE hb > ha [L100] a = y [L101] b = x [L102] j = ha [L103] ha = hb [L104] hb = j VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967329, b=4294967329, ha=10, hb=-251658231, j=-251658231, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967328, b=4294967327, ha=10, hb=-251658231, j=-251658231, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L238] RET, EXPR __ieee754_hypotf(x, y) [L238] float res = __ieee754_hypotf(x, y); [L240] CALL, EXPR isnan_float(res) [L213] return x != x; [L240] RET, EXPR isnan_float(res) [L240] COND TRUE !isnan_float(res) [L241] reach_error() VAL [one_sqrt=1, res=4294967326, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 78 mSDtfsCounter, 11 mSolverCounterSat, 0.0s 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=74occurred 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, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 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 [2022-12-14 09:09:10,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh --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 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:09:11,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:09:11,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:09:11,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:09:11,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:09:11,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:09:11,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:09:11,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:09:11,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:09:11,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:09:11,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:09:11,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:09:11,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:09:11,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:09:11,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:09:11,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:09:11,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:09:11,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:09:11,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:09:11,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:09:11,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:09:11,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:09:11,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:09:11,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:09:11,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:09:11,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:09:11,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:09:11,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:09:11,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:09:11,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:09:11,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:09:11,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:09:11,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:09:11,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:09:11,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:09:11,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:09:11,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:09:11,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:09:11,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:09:11,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:09:11,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:09:11,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 09:09:11,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:09:11,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:09:11,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:09:11,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:09:11,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:09:11,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:09:11,910 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:09:11,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:09:11,911 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:09:11,911 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:09:11,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:09:11,911 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:09:11,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:09:11,912 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:09:11,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:09:11,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:09:11,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:09:11,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:09:11,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:09:11,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 09:09:11,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 09:09:11,913 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 09:09:11,913 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:09:11,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:09:11,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:09:11,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:09:11,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:09:11,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 09:09:11,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:09:11,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:09:11,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:09:11,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:09:11,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:09:11,915 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 09:09:11,915 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 09:09:11,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:09:11,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:09:11,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 09:09:11,916 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_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 [2022-12-14 09:09:12,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:09:12,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:09:12,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:09:12,189 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:09:12,189 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:09:12,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-12-14 09:09:14,823 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:09:14,987 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:09:14,988 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-12-14 09:09:14,993 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data/b7b9aa274/59f0ce8d1ee843e992e755406c0f10a7/FLAG5543f97c8 [2022-12-14 09:09:15,004 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/data/b7b9aa274/59f0ce8d1ee843e992e755406c0f10a7 [2022-12-14 09:09:15,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:09:15,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:09:15,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:09:15,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:09:15,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:09:15,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42eab692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15, skipping insertion in model container [2022-12-14 09:09:15,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:09:15,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:09:15,168 WARN L237 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_84c5476e-e966-43e8-830a-3ca497f826e1/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-12-14 09:09:15,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:09:15,181 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:09:15,212 WARN L237 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_84c5476e-e966-43e8-830a-3ca497f826e1/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-12-14 09:09:15,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:09:15,224 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:09:15,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15 WrapperNode [2022-12-14 09:09:15,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:09:15,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:09:15,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:09:15,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:09:15,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,257 INFO L138 Inliner]: procedures = 22, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 261 [2022-12-14 09:09:15,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:09:15,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:09:15,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:09:15,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:09:15,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:09:15,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:09:15,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:09:15,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:09:15,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (1/1) ... [2022-12-14 09:09:15,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:09:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:09:15,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:09:15,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:09:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:09:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:09:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:09:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-12-14 09:09:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-12-14 09:09:15,434 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:09:15,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:09:17,470 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:09:17,474 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:09:17,475 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-12-14 09:09:17,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:09:17 BoogieIcfgContainer [2022-12-14 09:09:17,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:09:17,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:09:17,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:09:17,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:09:17,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:09:15" (1/3) ... [2022-12-14 09:09:17,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17916c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:09:17, skipping insertion in model container [2022-12-14 09:09:17,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:09:15" (2/3) ... [2022-12-14 09:09:17,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17916c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:09:17, skipping insertion in model container [2022-12-14 09:09:17,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:09:17" (3/3) ... [2022-12-14 09:09:17,482 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2022-12-14 09:09:17,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:09:17,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:09:17,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:09:17,532 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11dc7e27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:09:17,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:09:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:09:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 09:09:17,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:17,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:17,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1119796192, now seen corresponding path program 1 times [2022-12-14 09:09:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:09:17,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292064853] [2022-12-14 09:09:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:09:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:09:17,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:09:17,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 09:09:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:09:17,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 09:09:17,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:09:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:09:17,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:09:17,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:09:17,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292064853] [2022-12-14 09:09:17,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292064853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:09:17,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:09:17,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:09:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294585645] [2022-12-14 09:09:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:09:17,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:09:17,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:09:17,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:09:17,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:09:17,759 INFO L87 Difference]: Start difference. First operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 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) [2022-12-14 09:09:17,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:09:17,785 INFO L93 Difference]: Finished difference Result 182 states and 300 transitions. [2022-12-14 09:09:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:09:17,786 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 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 18 [2022-12-14 09:09:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:09:17,792 INFO L225 Difference]: With dead ends: 182 [2022-12-14 09:09:17,792 INFO L226 Difference]: Without dead ends: 88 [2022-12-14 09:09:17,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:09:17,797 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:09:17,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:09:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-14 09:09:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-12-14 09:09:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 84 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:09:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2022-12-14 09:09:17,827 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 18 [2022-12-14 09:09:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:09:17,828 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2022-12-14 09:09:17,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 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) [2022-12-14 09:09:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2022-12-14 09:09:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 09:09:17,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:09:17,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:09:17,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:09:18,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:09:18,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:09:18,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:09:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 46998031, now seen corresponding path program 1 times [2022-12-14 09:09:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:09:18,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092286574] [2022-12-14 09:09:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:09:18,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:09:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:09:18,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:09:18,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 09:09:18,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 139 [2022-12-14 09:09:18,204 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-12-14 09:09:18,206 INFO L158 Benchmark]: Toolchain (without parser) took 3199.18ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 78.6MB in the beginning and 79.8MB in the end (delta: -1.2MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2022-12-14 09:09:18,206 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 28.9MB in the beginning and 28.9MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:09:18,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.20ms. Allocated memory is still 100.7MB. Free memory was 78.3MB in the beginning and 63.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 09:09:18,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.66ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 61.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:09:18,207 INFO L158 Benchmark]: Boogie Preprocessor took 31.17ms. Allocated memory is still 100.7MB. Free memory was 61.3MB in the beginning and 58.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:09:18,208 INFO L158 Benchmark]: RCFGBuilder took 2186.45ms. Allocated memory is still 100.7MB. Free memory was 58.5MB in the beginning and 58.2MB in the end (delta: 310.5kB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-12-14 09:09:18,208 INFO L158 Benchmark]: TraceAbstraction took 727.78ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 57.4MB in the beginning and 79.8MB in the end (delta: -22.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:09:18,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 28.9MB in the beginning and 28.9MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.20ms. Allocated memory is still 100.7MB. Free memory was 78.3MB in the beginning and 63.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.66ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 61.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.17ms. Allocated memory is still 100.7MB. Free memory was 61.3MB in the beginning and 58.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2186.45ms. Allocated memory is still 100.7MB. Free memory was 58.5MB in the beginning and 58.2MB in the end (delta: 310.5kB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * TraceAbstraction took 727.78ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 57.4MB in the beginning and 79.8MB in the end (delta: -22.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 09:09:18,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c5476e-e966-43e8-830a-3ca497f826e1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output.