./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9 --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 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 --- 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-6b4ec56 [2022-11-20 21:06:53,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:06:53,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:06:53,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:06:53,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:06:53,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:06:53,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:06:53,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:06:53,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:06:53,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:06:53,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:06:53,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:06:53,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:06:53,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:06:53,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:06:53,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:06:53,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:06:53,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:06:53,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:06:53,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:06:53,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:06:53,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:06:53,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:06:53,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:06:53,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:06:53,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:06:53,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:06:53,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:06:53,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:06:53,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:06:53,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:06:53,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:06:53,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:06:53,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:06:53,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:06:53,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:06:53,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:06:53,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:06:53,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:06:53,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:06:53,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:06:53,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:06:53,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:06:53,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:06:53,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:06:53,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:06:53,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:06:53,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:06:53,981 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:06:53,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:06:53,981 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:06:53,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:06:53,982 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:06:53,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:06:53,983 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:06:53,983 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:06:53,983 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:06:53,983 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:06:53,983 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:06:53,984 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:06:53,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:06:53,985 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:06:53,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:06:53,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:06:53,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:06:53,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:06:53,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:06:53,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:06:53,986 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:06:53,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:06:53,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:06:53,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:06:53,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:06:53,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:06:53,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:06:53,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:06:53,988 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:06:53,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:06:53,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:06:53,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:06:53,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:06:53,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:06:53,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:06:53,989 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_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2022-11-20 21:06:54,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:06:54,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:06:54,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:06:54,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:06:54,283 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:06:54,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-20 21:06:57,472 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:06:57,659 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:06:57,660 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-20 21:06:57,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data/2a494e5c8/adcebbdc40e5407da1aaa7868c1ce6da/FLAG29efbc01c [2022-11-20 21:06:57,689 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data/2a494e5c8/adcebbdc40e5407da1aaa7868c1ce6da [2022-11-20 21:06:57,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:06:57,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:06:57,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:06:57,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:06:57,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:06:57,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1504dcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57, skipping insertion in model container [2022-11-20 21:06:57,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:06:57,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:06:57,888 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_28fc6e1e-5505-4594-9019-cdb4806741d6/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-20 21:06:57,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:06:57,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:06:57,920 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_28fc6e1e-5505-4594-9019-cdb4806741d6/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-20 21:06:57,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:06:57,934 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:06:57,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57 WrapperNode [2022-11-20 21:06:57,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:06:57,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:06:57,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:06:57,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:06:57,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,972 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-11-20 21:06:57,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:06:57,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:06:57,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:06:57,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:06:57,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:57,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:58,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:06:58,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:06:58,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:06:58,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:06:58,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (1/1) ... [2022-11-20 21:06:58,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:06:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:06:58,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:06:58,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:06:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:06:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:06:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:06:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-20 21:06:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-20 21:06:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-20 21:06:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:06:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:06:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:06:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:06:58,180 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:06:58,182 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:06:58,386 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:06:58,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:06:58,581 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 21:06:58,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:06:58 BoogieIcfgContainer [2022-11-20 21:06:58,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:06:58,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:06:58,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:06:58,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:06:58,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:06:57" (1/3) ... [2022-11-20 21:06:58,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57114494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:06:58, skipping insertion in model container [2022-11-20 21:06:58,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:06:57" (2/3) ... [2022-11-20 21:06:58,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57114494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:06:58, skipping insertion in model container [2022-11-20 21:06:58,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:06:58" (3/3) ... [2022-11-20 21:06:58,594 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2022-11-20 21:06:58,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:06:58,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:06:58,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:06:58,676 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;@dceb415, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:06:58,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:06:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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) [2022-11-20 21:06:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:06:58,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:58,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:58,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:58,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1082913263, now seen corresponding path program 1 times [2022-11-20 21:06:58,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:58,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888503503] [2022-11-20 21:06:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:06:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:06:58,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:06:58,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888503503] [2022-11-20 21:06:58,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888503503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:06:58,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:06:58,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:06:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9693657] [2022-11-20 21:06:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:06:58,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:06:58,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:06:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:06:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:06:59,029 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:06:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:06:59,105 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-11-20 21:06:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:06:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-20 21:06:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:06:59,116 INFO L225 Difference]: With dead ends: 40 [2022-11-20 21:06:59,119 INFO L226 Difference]: Without dead ends: 19 [2022-11-20 21:06:59,123 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 [2022-11-20 21:06:59,128 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:06:59,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:06:59,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-20 21:06:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-20 21:06:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-20 21:06:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-20 21:06:59,168 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-11-20 21:06:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:06:59,169 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-20 21:06:59,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:06:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-20 21:06:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:06:59,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:06:59,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:06:59,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:06:59,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:06:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:06:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2022826722, now seen corresponding path program 1 times [2022-11-20 21:06:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:06:59,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717401235] [2022-11-20 21:06:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:06:59,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:06:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:06:59,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 21:06:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:06:59,278 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 21:06:59,278 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 21:06:59,280 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:06:59,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:06:59,287 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 21:06:59,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:06:59,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:06:59 BoogieIcfgContainer [2022-11-20 21:06:59,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:06:59,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:06:59,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:06:59,320 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:06:59,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:06:58" (3/4) ... [2022-11-20 21:06:59,324 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 21:06:59,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:06:59,325 INFO L158 Benchmark]: Toolchain (without parser) took 1632.26ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 94.1MB in the beginning and 130.5MB in the end (delta: -36.4MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-11-20 21:06:59,326 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 132.1MB. Free memory was 72.9MB in the beginning and 72.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:06:59,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.34ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 83.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:06:59,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.60ms. Allocated memory is still 132.1MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:06:59,328 INFO L158 Benchmark]: Boogie Preprocessor took 27.82ms. Allocated memory is still 132.1MB. Free memory was 81.4MB in the beginning and 80.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:06:59,328 INFO L158 Benchmark]: RCFGBuilder took 582.18ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 62.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 21:06:59,329 INFO L158 Benchmark]: TraceAbstraction took 732.35ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 61.9MB in the beginning and 130.5MB in the end (delta: -68.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:06:59,329 INFO L158 Benchmark]: Witness Printer took 5.14ms. Allocated memory is still 178.3MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:06:59,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 132.1MB. Free memory was 72.9MB in the beginning and 72.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.34ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 83.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.60ms. Allocated memory is still 132.1MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.82ms. Allocated memory is still 132.1MB. Free memory was 81.4MB in the beginning and 80.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 582.18ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 62.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 732.35ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 61.9MB in the beginning and 130.5MB in the end (delta: -68.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.14ms. Allocated memory is still 178.3MB. Free memory is still 130.5MB. 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: 72]: 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 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L15] __uint32_t w; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578696, __fpclassify_float(x)=0, x=0, y=4286578696] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=0, \old(y)=4286578696, \result=4286578696, x=0, y=4286578696] [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578696, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578696] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() VAL [res=4286578696, x=0, y=4286578696] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 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=21occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2022-11-20 21:06:59,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9 --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 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 --- 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-6b4ec56 [2022-11-20 21:07:01,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:07:01,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:07:01,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:07:01,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:07:01,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:07:01,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:07:01,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:07:01,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:07:01,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:07:01,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:07:01,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:07:01,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:07:01,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:07:01,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:07:01,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:07:01,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:07:01,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:07:01,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:07:01,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:07:01,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:07:01,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:07:01,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:07:01,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:07:01,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:07:01,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:07:01,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:07:01,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:07:01,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:07:01,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:07:01,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:07:01,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:07:01,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:07:01,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:07:01,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:07:01,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:07:01,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:07:01,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:07:01,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:07:01,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:07:01,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:07:01,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 21:07:01,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:07:01,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:07:01,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:07:01,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:07:01,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:07:01,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:07:01,985 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:07:01,986 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:07:01,986 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:07:01,986 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:07:01,986 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:07:01,986 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:07:01,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:07:01,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:07:01,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:07:01,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:07:01,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:07:01,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:07:01,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:07:01,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:07:01,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:07:01,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:07:01,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:07:01,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:07:01,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:07:01,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:07:01,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:07:01,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:07:01,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:07:01,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:07:01,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:07:01,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:07:01,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:07:01,992 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:07:01,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:07:01,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:07:01,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:07:01,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:07:01,993 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_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2022-11-20 21:07:02,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:07:02,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:07:02,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:07:02,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:07:02,367 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:07:02,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-20 21:07:05,593 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:07:05,838 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:07:05,839 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-20 21:07:05,846 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data/0552977ed/b6cf90908b4b47c199d964353fc06d0b/FLAG6f8c97083 [2022-11-20 21:07:05,860 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/data/0552977ed/b6cf90908b4b47c199d964353fc06d0b [2022-11-20 21:07:05,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:07:05,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:07:05,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:07:05,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:07:05,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:07:05,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:05" (1/1) ... [2022-11-20 21:07:05,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a699606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:05, skipping insertion in model container [2022-11-20 21:07:05,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:05" (1/1) ... [2022-11-20 21:07:05,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:07:05,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:07:06,069 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_28fc6e1e-5505-4594-9019-cdb4806741d6/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-20 21:07:06,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:06,097 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:07:06,143 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_28fc6e1e-5505-4594-9019-cdb4806741d6/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-20 21:07:06,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:06,164 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:07:06,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06 WrapperNode [2022-11-20 21:07:06,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:07:06,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:07:06,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:07:06,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:07:06,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,245 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-20 21:07:06,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:07:06,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:07:06,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:07:06,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:07:06,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:07:06,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:07:06,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:07:06,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:07:06,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (1/1) ... [2022-11-20 21:07:06,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:07:06,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:07:06,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:07:06,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:07:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:07:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 21:07:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:07:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-20 21:07:06,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-20 21:07:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 21:07:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:07:06,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:07:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-20 21:07:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:07:06,544 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:07:06,547 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:07:06,870 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:07:06,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:07:06,876 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 21:07:06,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:07:06 BoogieIcfgContainer [2022-11-20 21:07:06,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:07:06,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:07:06,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:07:06,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:07:06,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:07:05" (1/3) ... [2022-11-20 21:07:06,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b06ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:07:06, skipping insertion in model container [2022-11-20 21:07:06,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:06" (2/3) ... [2022-11-20 21:07:06,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b06ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:07:06, skipping insertion in model container [2022-11-20 21:07:06,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:07:06" (3/3) ... [2022-11-20 21:07:06,899 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2022-11-20 21:07:06,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:07:06,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:07:07,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:07:07,019 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;@63321a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:07:07,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:07:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2022-11-20 21:07:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:07:07,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:07,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:07,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:07,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1229941712, now seen corresponding path program 1 times [2022-11-20 21:07:07,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:07,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817617879] [2022-11-20 21:07:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:07,057 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 [2022-11-20 21:07:07,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:07,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:07,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:07,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 21:07:07,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:07:07,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:07,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:07,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817617879] [2022-11-20 21:07:07,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817617879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:07,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:07,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:07:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953430840] [2022-11-20 21:07:07,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:07:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:07:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:07:07,236 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:07,279 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2022-11-20 21:07:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:07:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-20 21:07:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:07,291 INFO L225 Difference]: With dead ends: 51 [2022-11-20 21:07:07,292 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 21:07:07,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:07:07,304 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2022-11-20 21:07:07,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:07:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 21:07:07,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 21:07:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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) [2022-11-20 21:07:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-20 21:07:07,356 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2022-11-20 21:07:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:07,358 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-20 21:07:07,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-20 21:07:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:07:07,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:07,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:07,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:07,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2003061117, now seen corresponding path program 1 times [2022-11-20 21:07:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:07,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816438702] [2022-11-20 21:07:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:07,578 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 [2022-11-20 21:07:07,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:07,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:07,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:07,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:07:07,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:07:07,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:07,734 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:07,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816438702] [2022-11-20 21:07:07,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816438702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:07,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:07,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:07:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362777779] [2022-11-20 21:07:07,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:07,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:07:07,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:07:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:07:07,739 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:07,782 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-20 21:07:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:07:07,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-20 21:07:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:07,786 INFO L225 Difference]: With dead ends: 36 [2022-11-20 21:07:07,786 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 21:07:07,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:07:07,788 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 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 [2022-11-20 21:07:07,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:07:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 21:07:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 21:07:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 21:07:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-20 21:07:07,797 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-11-20 21:07:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:07,798 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-20 21:07:07,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-20 21:07:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 21:07:07,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:07,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:07,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:08,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:08,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 579011981, now seen corresponding path program 1 times [2022-11-20 21:07:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812423604] [2022-11-20 21:07:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:08,023 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 [2022-11-20 21:07:08,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:08,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:08,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (4)] Waiting until timeout for monitored process [2022-11-20 21:07:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:08,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 21:07:08,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:07:08,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:08,336 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:08,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812423604] [2022-11-20 21:07:08,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812423604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:08,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:08,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:07:08,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83849974] [2022-11-20 21:07:08,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:08,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:07:08,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:08,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:07:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:07:08,339 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:08,469 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2022-11-20 21:07:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:07:08,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-20 21:07:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:08,471 INFO L225 Difference]: With dead ends: 62 [2022-11-20 21:07:08,471 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 21:07:08,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:07:08,473 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:08,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 93 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-11-20 21:07:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 21:07:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-11-20 21:07:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 21:07:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-20 21:07:08,481 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-11-20 21:07:08,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:08,482 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-20 21:07:08,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-20 21:07:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 21:07:08,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:08,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:08,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:08,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:08,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1695173439, now seen corresponding path program 1 times [2022-11-20 21:07:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:08,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28493571] [2022-11-20 21:07:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:08,698 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 [2022-11-20 21:07:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:08,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:08,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (5)] Waiting until timeout for monitored process [2022-11-20 21:07:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 21:07:08,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:07:08,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:08,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:08,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28493571] [2022-11-20 21:07:08,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28493571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:08,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:08,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:07:08,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133172248] [2022-11-20 21:07:08,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:08,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:07:08,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:07:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:07:08,900 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:09,038 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2022-11-20 21:07:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:07:09,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 21:07:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:09,045 INFO L225 Difference]: With dead ends: 53 [2022-11-20 21:07:09,045 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 21:07:09,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:07:09,047 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:09,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 78 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-20 21:07:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 21:07:09,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-20 21:07:09,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:07:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-20 21:07:09,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 16 [2022-11-20 21:07:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:09,054 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-20 21:07:09,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:07:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-20 21:07:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 21:07:09,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:09,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:09,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:09,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:09,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash 800680882, now seen corresponding path program 1 times [2022-11-20 21:07:09,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:09,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795728326] [2022-11-20 21:07:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:09,258 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 [2022-11-20 21:07:09,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:09,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:09,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (6)] Waiting until timeout for monitored process [2022-11-20 21:07:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:09,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:07:09,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 21:07:09,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:09,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:09,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795728326] [2022-11-20 21:07:09,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795728326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:09,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:09,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:07:09,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877062682] [2022-11-20 21:07:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:09,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:07:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:07:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:07:09,397 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:09,441 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-11-20 21:07:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:07:09,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-20 21:07:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:09,443 INFO L225 Difference]: With dead ends: 36 [2022-11-20 21:07:09,446 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 21:07:09,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:07:09,448 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 49 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 [2022-11-20 21:07:09,453 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] [2022-11-20 21:07:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 21:07:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 21:07:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:07:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-20 21:07:09,482 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2022-11-20 21:07:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:09,483 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-20 21:07:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-20 21:07:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 21:07:09,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:09,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:09,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (6)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:09,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:09,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:09,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:09,693 INFO L85 PathProgramCache]: Analyzing trace with hash 802527924, now seen corresponding path program 1 times [2022-11-20 21:07:09,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:09,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008272927] [2022-11-20 21:07:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:09,693 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 [2022-11-20 21:07:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:09,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:09,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (7)] Waiting until timeout for monitored process [2022-11-20 21:07:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 21:07:09,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:07:09,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:09,884 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:09,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008272927] [2022-11-20 21:07:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008272927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:09,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:09,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:07:09,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277036988] [2022-11-20 21:07:09,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:07:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:07:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:07:09,894 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:10,005 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-20 21:07:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:07:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-20 21:07:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:10,007 INFO L225 Difference]: With dead ends: 39 [2022-11-20 21:07:10,007 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 21:07:10,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:07:10,008 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:10,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:07:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 21:07:10,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-11-20 21:07:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:07:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-20 21:07:10,013 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 22 [2022-11-20 21:07:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:10,014 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-20 21:07:10,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-20 21:07:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 21:07:10,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:10,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:10,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (7)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:10,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:10,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash -288314810, now seen corresponding path program 1 times [2022-11-20 21:07:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:10,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875963018] [2022-11-20 21:07:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:10,233 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 [2022-11-20 21:07:10,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:10,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:10,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (8)] Waiting until timeout for monitored process [2022-11-20 21:07:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:10,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 21:07:10,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:07:10,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:10,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:10,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875963018] [2022-11-20 21:07:10,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875963018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:10,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:10,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:07:10,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547408873] [2022-11-20 21:07:10,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:10,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:07:10,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:10,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:07:10,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:07:10,428 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:10,552 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-11-20 21:07:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:07:10,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-20 21:07:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:10,554 INFO L225 Difference]: With dead ends: 43 [2022-11-20 21:07:10,554 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 21:07:10,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:07:10,556 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:10,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2022-11-20 21:07:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 21:07:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 21:07:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 21:07:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-20 21:07:10,561 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2022-11-20 21:07:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:10,561 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-20 21:07:10,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-20 21:07:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 21:07:10,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:10,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:10,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (8)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:10,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:10,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:10,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1306136146, now seen corresponding path program 1 times [2022-11-20 21:07:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720491900] [2022-11-20 21:07:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:10,784 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 [2022-11-20 21:07:10,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:10,785 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:10,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (9)] Waiting until timeout for monitored process [2022-11-20 21:07:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:10,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 21:07:10,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:07:10,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:10,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720491900] [2022-11-20 21:07:10,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720491900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:10,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:10,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:07:10,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123022839] [2022-11-20 21:07:10,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:10,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:07:10,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:07:10,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:07:10,978 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:11,102 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-20 21:07:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:07:11,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-20 21:07:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:11,104 INFO L225 Difference]: With dead ends: 38 [2022-11-20 21:07:11,105 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 21:07:11,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:07:11,106 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:11,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-11-20 21:07:11,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 21:07:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-20 21:07:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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) [2022-11-20 21:07:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-20 21:07:11,110 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 24 [2022-11-20 21:07:11,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:11,110 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-20 21:07:11,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-20 21:07:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 21:07:11,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:11,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:11,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (9)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:11,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:11,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:11,312 INFO L85 PathProgramCache]: Analyzing trace with hash 543069769, now seen corresponding path program 1 times [2022-11-20 21:07:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:11,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939826584] [2022-11-20 21:07:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:11,313 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 [2022-11-20 21:07:11,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:11,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 21:07:11,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (10)] Waiting until timeout for monitored process [2022-11-20 21:07:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:11,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 21:07:11,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:07:11,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:11,628 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:11,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939826584] [2022-11-20 21:07:11,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939826584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:11,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:11,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 21:07:11,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841227586] [2022-11-20 21:07:11,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:11,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:07:11,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:07:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:07:11,632 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:11,809 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-20 21:07:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 21:07:11,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-20 21:07:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:11,810 INFO L225 Difference]: With dead ends: 21 [2022-11-20 21:07:11,811 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:07:11,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-20 21:07:11,812 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:11,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:07:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:07:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:07:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:07:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:07:11,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-11-20 21:07:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:11,813 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:07:11,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:07:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:07:11,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:07:11,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:07:11,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 (10)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:12,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 21:07:12,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 21:07:12,198 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 21:07:12,198 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmin_float_~y#1|)) [2022-11-20 21:07:12,198 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 40 41) no Hoare annotation was computed. [2022-11-20 21:07:12,198 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-11-20 21:07:12,199 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmin_float_~y#1|)) [2022-11-20 21:07:12,199 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2022-11-20 21:07:12,199 INFO L899 garLoopResultBuilder]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2022-11-20 21:07:12,199 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 21:07:12,199 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 21:07:12,199 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 21:07:12,199 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2022-11-20 21:07:12,200 INFO L895 garLoopResultBuilder]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_#res#1| .cse0) (= .cse0 (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|))) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv1 32)) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2022-11-20 21:07:12,200 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2022-11-20 21:07:12,200 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_#res#1| .cse0) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2022-11-20 21:07:12,200 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2022-11-20 21:07:12,200 INFO L902 garLoopResultBuilder]: At program point L76(lines 58 77) the Hoare annotation is: true [2022-11-20 21:07:12,200 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_#res#1| .cse0) (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|))) [2022-11-20 21:07:12,201 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-11-20 21:07:12,201 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2022-11-20 21:07:12,201 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 14 35) no Hoare annotation was computed. [2022-11-20 21:07:12,201 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2022-11-20 21:07:12,201 INFO L899 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2022-11-20 21:07:12,201 INFO L895 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-11-20 21:07:12,201 INFO L899 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2022-11-20 21:07:12,201 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2022-11-20 21:07:12,201 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 14 35) the Hoare annotation is: true [2022-11-20 21:07:12,202 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 14 35) no Hoare annotation was computed. [2022-11-20 21:07:12,205 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:12,207 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:07:12,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:07:12 BoogieIcfgContainer [2022-11-20 21:07:12,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:07:12,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:07:12,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:07:12,230 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:07:12,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:07:06" (3/4) ... [2022-11-20 21:07:12,233 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:07:12,240 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-20 21:07:12,246 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 21:07:12,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 21:07:12,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:07:12,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 21:07:12,308 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-20 21:07:12,309 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y [2022-11-20 21:07:12,309 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2022-11-20 21:07:12,310 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2022-11-20 21:07:12,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:07:12,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:07:12,345 INFO L158 Benchmark]: Toolchain (without parser) took 6480.72ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 42.0MB in the beginning and 102.3MB in the end (delta: -60.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:07:12,345 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:07:12,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.79ms. Allocated memory is still 71.3MB. Free memory was 41.8MB in the beginning and 30.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:07:12,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.22ms. Allocated memory is still 71.3MB. Free memory was 30.4MB in the beginning and 50.8MB in the end (delta: -20.4MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-11-20 21:07:12,346 INFO L158 Benchmark]: Boogie Preprocessor took 66.43ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 49.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:07:12,347 INFO L158 Benchmark]: RCFGBuilder took 564.22ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 36.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 21:07:12,347 INFO L158 Benchmark]: TraceAbstraction took 5348.83ms. Allocated memory was 71.3MB in the beginning and 102.8MB in the end (delta: 31.5MB). Free memory was 35.3MB in the beginning and 78.3MB in the end (delta: -42.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-20 21:07:12,348 INFO L158 Benchmark]: Witness Printer took 114.90ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 78.3MB in the beginning and 102.3MB in the end (delta: -24.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 21:07:12,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.79ms. Allocated memory is still 71.3MB. Free memory was 41.8MB in the beginning and 30.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.22ms. Allocated memory is still 71.3MB. Free memory was 30.4MB in the beginning and 50.8MB in the end (delta: -20.4MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.43ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 49.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 564.22ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 36.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5348.83ms. Allocated memory was 71.3MB in the beginning and 102.8MB in the end (delta: 31.5MB). Free memory was 35.3MB in the beginning and 78.3MB in the end (delta: -42.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Witness Printer took 114.90ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 78.3MB in the beginning and 102.3MB in the end (delta: -24.0MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 677 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53 IncrementalHoareTripleChecker+Unchecked, 456 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 221 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 23 NumberOfFragments, 88 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 46 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 166 ConstructedInterpolants, 14 QuantifiedInterpolants, 556 SizeOfPredicates, 46 NumberOfNonLiveVariables, 625 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) RESULT: Ultimate proved your program to be correct! [2022-11-20 21:07:12,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fc6e1e-5505-4594-9019-cdb4806741d6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE