./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/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_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P --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 --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:37:05,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:37:05,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:37:05,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:37:05,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:37:05,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:37:05,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:37:05,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:37:05,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:37:05,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:37:05,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:37:05,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:37:05,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:37:05,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:37:05,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:37:05,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:37:05,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:37:05,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:37:05,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:37:06,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:37:06,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:37:06,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:37:06,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:37:06,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:37:06,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:37:06,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:37:06,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:37:06,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:37:06,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:37:06,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:37:06,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:37:06,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:37:06,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:37:06,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:37:06,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:37:06,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:37:06,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:37:06,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:37:06,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:37:06,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:37:06,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:37:06,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:37:06,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:37:06,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:37:06,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:37:06,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:37:06,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:37:06,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:37:06,085 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:37:06,085 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:37:06,085 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:37:06,086 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:37:06,087 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:37:06,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:37:06,087 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:37:06,087 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:37:06,088 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:37:06,088 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:37:06,088 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:37:06,088 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:37:06,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:37:06,090 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:37:06,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:37:06,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:37:06,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:37:06,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:37:06,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:37:06,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:37:06,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:37:06,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:37:06,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:37:06,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:37:06,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:37:06,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:37:06,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:37:06,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:37:06,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:37:06,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:37:06,094 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:37:06,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:37:06,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:37:06,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:37:06,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:37:06,095 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2021-11-20 23:37:06,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:37:06,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:37:06,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:37:06,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:37:06,398 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:37:06,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-11-20 23:37:06,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/584bdb9d3/9e6ef92a18c94155b746e5b18d789ec6/FLAG65f743451 [2021-11-20 23:37:06,934 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:37:06,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-11-20 23:37:06,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/584bdb9d3/9e6ef92a18c94155b746e5b18d789ec6/FLAG65f743451 [2021-11-20 23:37:07,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/584bdb9d3/9e6ef92a18c94155b746e5b18d789ec6 [2021-11-20 23:37:07,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:37:07,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:37:07,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:37:07,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:37:07,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:37:07,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43aaaa02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07, skipping insertion in model container [2021-11-20 23:37:07,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:37:07,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:37:07,548 WARN L230 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_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-11-20 23:37:07,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:37:07,558 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:37:07,578 WARN L230 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_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-11-20 23:37:07,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:37:07,591 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:37:07,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07 WrapperNode [2021-11-20 23:37:07,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:37:07,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:37:07,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:37:07,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:37:07,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,652 INFO L137 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2021-11-20 23:37:07,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:37:07,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:37:07,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:37:07,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:37:07,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:37:07,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:37:07,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:37:07,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:37:07,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (1/1) ... [2021-11-20 23:37:07,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:37:07,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:37:07,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:37:07,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:37:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:37:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:37:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:37:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-11-20 23:37:07,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-11-20 23:37:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 23:37:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:37:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:37:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:37:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:37:07,894 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:37:07,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:37:08,145 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:37:08,251 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:37:08,251 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 23:37:08,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:08 BoogieIcfgContainer [2021-11-20 23:37:08,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:37:08,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:37:08,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:37:08,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:37:08,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:37:07" (1/3) ... [2021-11-20 23:37:08,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cab5c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:08, skipping insertion in model container [2021-11-20 23:37:08,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:07" (2/3) ... [2021-11-20 23:37:08,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cab5c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:08, skipping insertion in model container [2021-11-20 23:37:08,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:08" (3/3) ... [2021-11-20 23:37:08,278 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-11-20 23:37:08,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:37:08,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:37:08,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:37:08,348 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:37:08,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:37:08,388 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) [2021-11-20 23:37:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 23:37:08,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:08,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:08,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1150042382, now seen corresponding path program 1 times [2021-11-20 23:37:08,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:08,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105569467] [2021-11-20 23:37:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:08,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:08,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:08,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105569467] [2021-11-20 23:37:08,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105569467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:08,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:08,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:37:08,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064155811] [2021-11-20 23:37:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:08,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:37:08,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:37:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:37:08,642 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) [2021-11-20 23:37:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:08,681 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2021-11-20 23:37:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:37:08,684 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 [2021-11-20 23:37:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:08,691 INFO L225 Difference]: With dead ends: 40 [2021-11-20 23:37:08,694 INFO L226 Difference]: Without dead ends: 19 [2021-11-20 23:37:08,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:37:08,704 INFO L933 BasicCegarLoop]: 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, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:08,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-20 23:37:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-20 23:37:08,741 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) [2021-11-20 23:37:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-20 23:37:08,743 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-11-20 23:37:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:08,744 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-20 23:37:08,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-20 23:37:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-20 23:37:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:37:08,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:08,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:08,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:37:08,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:08,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2093005978, now seen corresponding path program 1 times [2021-11-20 23:37:08,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:08,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381291657] [2021-11-20 23:37:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:08,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:37:08,829 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:37:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:37:08,912 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:37:08,913 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:37:08,915 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:37:08,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:37:08,923 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 23:37:08,926 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:37:08,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:37:08 BoogieIcfgContainer [2021-11-20 23:37:08,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:37:08,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:37:08,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:37:08,952 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:37:08,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:08" (3/4) ... [2021-11-20 23:37:08,955 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:37:08,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:37:08,957 INFO L158 Benchmark]: Toolchain (without parser) took 1634.43ms. Allocated memory is still 148.9MB. Free memory was 117.3MB in the beginning and 80.7MB in the end (delta: 36.6MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2021-11-20 23:37:08,957 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:37:08,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.18ms. Allocated memory is still 148.9MB. Free memory was 117.0MB in the beginning and 124.3MB in the end (delta: -7.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:37:08,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.01ms. Allocated memory is still 148.9MB. Free memory was 124.3MB in the beginning and 122.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:37:08,959 INFO L158 Benchmark]: Boogie Preprocessor took 44.32ms. Allocated memory is still 148.9MB. Free memory was 122.6MB in the beginning and 121.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:37:08,960 INFO L158 Benchmark]: RCFGBuilder took 554.17ms. Allocated memory is still 148.9MB. Free memory was 121.4MB in the beginning and 107.1MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 23:37:08,961 INFO L158 Benchmark]: TraceAbstraction took 695.62ms. Allocated memory is still 148.9MB. Free memory was 106.3MB in the beginning and 81.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-20 23:37:08,961 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 148.9MB. Free memory was 81.1MB in the beginning and 80.7MB in the end (delta: 415.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:37:08,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.18ms. Allocated memory is still 148.9MB. Free memory was 117.0MB in the beginning and 124.3MB in the end (delta: -7.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.01ms. Allocated memory is still 148.9MB. Free memory was 124.3MB in the beginning and 122.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.32ms. Allocated memory is still 148.9MB. Free memory was 122.6MB in the beginning and 121.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 554.17ms. Allocated memory is still 148.9MB. Free memory was 121.4MB in the beginning and 107.1MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 695.62ms. Allocated memory is still 148.9MB. Free memory was 106.3MB in the beginning and 81.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 148.9MB. Free memory was 81.1MB in the beginning and 80.7MB in the end (delta: 415.0kB). 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)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [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=4286578690, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578690] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() VAL [res=4286578690, x=0, y=4286578690] - 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: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s 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 [2021-11-20 23:37:09,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/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_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P --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 --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:37:11,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:37:11,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:37:11,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:37:11,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:37:11,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:37:11,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:37:11,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:37:11,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:37:11,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:37:11,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:37:11,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:37:11,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:37:11,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:37:11,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:37:11,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:37:11,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:37:11,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:37:11,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:37:11,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:37:11,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:37:11,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:37:11,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:37:11,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:37:11,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:37:11,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:37:11,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:37:11,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:37:11,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:37:11,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:37:11,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:37:11,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:37:11,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:37:11,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:37:11,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:37:11,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:37:11,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:37:11,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:37:11,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:37:11,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:37:11,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:37:11,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:37:11,771 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:37:11,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:37:11,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:37:11,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:37:11,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:37:11,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:37:11,774 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:37:11,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:37:11,775 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:37:11,775 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:37:11,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:37:11,777 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:37:11,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:37:11,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:37:11,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:37:11,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:37:11,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:37:11,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:37:11,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:37:11,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:37:11,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:37:11,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:37:11,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:37:11,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:37:11,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:37:11,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:37:11,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:37:11,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:37:11,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:37:11,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:37:11,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:37:11,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:37:11,783 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:37:11,783 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:37:11,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:37:11,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:37:11,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:37:11,785 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_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2021-11-20 23:37:12,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:37:12,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:37:12,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:37:12,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:37:12,230 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:37:12,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-11-20 23:37:12,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/05037b689/3b937caf507e46aebf1fda90813f0e2c/FLAG0609106d4 [2021-11-20 23:37:12,850 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:37:12,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-11-20 23:37:12,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/05037b689/3b937caf507e46aebf1fda90813f0e2c/FLAG0609106d4 [2021-11-20 23:37:13,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/data/05037b689/3b937caf507e46aebf1fda90813f0e2c [2021-11-20 23:37:13,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:37:13,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:37:13,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:37:13,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:37:13,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:37:13,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5450d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13, skipping insertion in model container [2021-11-20 23:37:13,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:37:13,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:37:13,512 WARN L230 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_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-11-20 23:37:13,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:37:13,537 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:37:13,578 WARN L230 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_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-11-20 23:37:13,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:37:13,604 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:37:13,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13 WrapperNode [2021-11-20 23:37:13,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:37:13,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:37:13,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:37:13,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:37:13,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,672 INFO L137 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-11-20 23:37:13,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:37:13,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:37:13,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:37:13,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:37:13,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:37:13,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:37:13,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:37:13,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:37:13,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (1/1) ... [2021-11-20 23:37:13,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:37:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:37:13,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:37:13,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:37:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:37:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:37:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:37:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-11-20 23:37:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-11-20 23:37:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:37:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:37:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:37:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-20 23:37:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:37:13,913 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:37:13,915 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:37:14,185 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:37:14,191 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:37:14,192 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 23:37:14,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:14 BoogieIcfgContainer [2021-11-20 23:37:14,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:37:14,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:37:14,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:37:14,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:37:14,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:37:13" (1/3) ... [2021-11-20 23:37:14,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f333d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:14, skipping insertion in model container [2021-11-20 23:37:14,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:13" (2/3) ... [2021-11-20 23:37:14,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f333d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:14, skipping insertion in model container [2021-11-20 23:37:14,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:14" (3/3) ... [2021-11-20 23:37:14,202 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-11-20 23:37:14,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:37:14,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:37:14,285 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:37:14,292 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:37:14,292 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:37:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-20 23:37:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:37:14,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:14,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:14,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:14,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1826258672, now seen corresponding path program 1 times [2021-11-20 23:37:14,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:14,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351847112] [2021-11-20 23:37:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:14,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:14,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:14,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:14,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:37:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:14,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:37:14,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:14,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:14,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:14,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351847112] [2021-11-20 23:37:14,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351847112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:14,613 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:14,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:37:14,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855557150] [2021-11-20 23:37:14,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:14,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:37:14,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:14,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:37:14,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:37:14,669 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-20 23:37:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:14,696 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-11-20 23:37:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:37:14,701 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 [2021-11-20 23:37:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:14,709 INFO L225 Difference]: With dead ends: 55 [2021-11-20 23:37:14,709 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 23:37:14,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:37:14,717 INFO L933 BasicCegarLoop]: 37 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, 37 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 [2021-11-20 23:37:14,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 23:37:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 23:37:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 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) [2021-11-20 23:37:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2021-11-20 23:37:14,764 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2021-11-20 23:37:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:14,765 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2021-11-20 23:37:14,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-20 23:37:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2021-11-20 23:37:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:37:14,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:14,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:14,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:14,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:14,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:14,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -503165124, now seen corresponding path program 1 times [2021-11-20 23:37:14,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:14,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250986434] [2021-11-20 23:37:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:14,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:14,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:15,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:37:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:15,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:37:15,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:15,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:15,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:15,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250986434] [2021-11-20 23:37:15,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250986434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:15,233 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:15,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:37:15,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033781794] [2021-11-20 23:37:15,234 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:15,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:37:15,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:37:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:37:15,237 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:37:15,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:15,273 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2021-11-20 23:37:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:15,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-20 23:37:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:15,276 INFO L225 Difference]: With dead ends: 41 [2021-11-20 23:37:15,277 INFO L226 Difference]: Without dead ends: 32 [2021-11-20 23:37:15,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:37:15,279 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:15,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-20 23:37:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-11-20 23:37:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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) [2021-11-20 23:37:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-11-20 23:37:15,290 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2021-11-20 23:37:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:15,290 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-11-20 23:37:15,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:37:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-11-20 23:37:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:37:15,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:15,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:15,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:15,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:15,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash -69350008, now seen corresponding path program 1 times [2021-11-20 23:37:15,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:15,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074092691] [2021-11-20 23:37:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:15,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:15,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:15,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:37:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:15,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:37:15,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:15,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:16,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074092691] [2021-11-20 23:37:16,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074092691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:16,163 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:16,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 23:37:16,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899298482] [2021-11-20 23:37:16,168 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:16,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:37:16,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:16,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:37:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:37:16,170 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:37:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:16,502 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2021-11-20 23:37:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:37:16,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 23:37:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:16,504 INFO L225 Difference]: With dead ends: 58 [2021-11-20 23:37:16,504 INFO L226 Difference]: Without dead ends: 32 [2021-11-20 23:37:16,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:16,506 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:16,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 119 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2021-11-20 23:37:16,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-20 23:37:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-11-20 23:37:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 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), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:37:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-20 23:37:16,515 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2021-11-20 23:37:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:16,516 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-20 23:37:16,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:37:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-11-20 23:37:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 23:37:16,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:16,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:16,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-20 23:37:16,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:16,730 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:16,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash -538621340, now seen corresponding path program 1 times [2021-11-20 23:37:16,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:16,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652243019] [2021-11-20 23:37:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:16,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:16,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:16,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:16,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:37:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:16,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:37:16,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:37:16,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:37:16,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:16,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652243019] [2021-11-20 23:37:16,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652243019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:16,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:16,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:37:16,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38108045] [2021-11-20 23:37:16,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:16,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:37:16,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:16,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:37:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:37:16,960 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:37:17,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:17,004 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-11-20 23:37:17,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:17,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-11-20 23:37:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:17,006 INFO L225 Difference]: With dead ends: 43 [2021-11-20 23:37:17,006 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 23:37:17,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:37:17,008 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:17,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 23:37:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-11-20 23:37:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-11-20 23:37:17,016 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 22 [2021-11-20 23:37:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:17,017 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-20 23:37:17,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:37:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-11-20 23:37:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 23:37:17,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:17,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:17,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:17,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash -636835510, now seen corresponding path program 1 times [2021-11-20 23:37:17,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:17,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727480210] [2021-11-20 23:37:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:17,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:17,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:17,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:37:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:17,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:37:17,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:37:17,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:37:17,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:17,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727480210] [2021-11-20 23:37:17,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727480210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:17,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:17,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:37:17,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016642910] [2021-11-20 23:37:17,544 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:17,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:37:17,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:37:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:37:17,546 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:17,561 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-11-20 23:37:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-20 23:37:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:17,563 INFO L225 Difference]: With dead ends: 41 [2021-11-20 23:37:17,565 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 23:37:17,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:37:17,569 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:17,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 23:37:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 23:37:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-11-20 23:37:17,578 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 24 [2021-11-20 23:37:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:17,579 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-20 23:37:17,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:17,579 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-11-20 23:37:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 23:37:17,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:17,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:17,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:17,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:17,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash -579577208, now seen corresponding path program 1 times [2021-11-20 23:37:17,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:17,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630582965] [2021-11-20 23:37:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:17,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:17,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:17,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:17,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:37:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:17,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:37:17,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:37:17,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:37:18,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:18,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630582965] [2021-11-20 23:37:18,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630582965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:18,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:18,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 23:37:18,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897787486] [2021-11-20 23:37:18,066 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:18,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:37:18,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:37:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:37:18,067 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:18,158 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-11-20 23:37:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:37:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-20 23:37:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:18,166 INFO L225 Difference]: With dead ends: 43 [2021-11-20 23:37:18,166 INFO L226 Difference]: Without dead ends: 40 [2021-11-20 23:37:18,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:18,168 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 61 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:18,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 118 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-20 23:37:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2021-11-20 23:37:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-11-20 23:37:18,180 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 24 [2021-11-20 23:37:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:18,180 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-11-20 23:37:18,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-11-20 23:37:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 23:37:18,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:18,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:18,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:18,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:18,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2027254888, now seen corresponding path program 1 times [2021-11-20 23:37:18,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:18,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017711502] [2021-11-20 23:37:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:18,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:18,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:18,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:18,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:37:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:18,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:37:18,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:37:18,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:37:18,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:18,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017711502] [2021-11-20 23:37:18,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017711502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:18,951 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:18,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 23:37:18,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154132748] [2021-11-20 23:37:18,951 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:18,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:37:18,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:37:18,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:37:18,952 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:37:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:19,056 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-11-20 23:37:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:19,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-11-20 23:37:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:19,059 INFO L225 Difference]: With dead ends: 47 [2021-11-20 23:37:19,059 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 23:37:19,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:19,060 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:19,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 80 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2021-11-20 23:37:19,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 23:37:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 23:37:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 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) [2021-11-20 23:37:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-20 23:37:19,066 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 25 [2021-11-20 23:37:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:19,066 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-20 23:37:19,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:37:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-20 23:37:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:37:19,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:19,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:19,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:19,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:19,281 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:19,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1580504541, now seen corresponding path program 1 times [2021-11-20 23:37:19,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:37:19,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717800110] [2021-11-20 23:37:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:19,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:37:19,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:37:19,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:37:19,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:37:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:19,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 23:37:19,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:37:19,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:37:19,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:19,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717800110] [2021-11-20 23:37:19,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717800110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:19,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:19,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-20 23:37:19,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773012942] [2021-11-20 23:37:19,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:19,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:37:19,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:37:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:37:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:37:19,934 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:20,124 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-20 23:37:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:37:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-11-20 23:37:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:20,124 INFO L225 Difference]: With dead ends: 26 [2021-11-20 23:37:20,124 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:37:20,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:37:20,126 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:20,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 183 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-11-20 23:37:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:37:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:37:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:37:20,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-11-20 23:37:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:20,128 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:37:20,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:37:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:37:20,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:37:20,131 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:37:20,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:37:20,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:37:20,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:37:20,451 INFO L854 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|)) [2021-11-20 23:37:20,452 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 40 41) no Hoare annotation was computed. [2021-11-20 23:37:20,452 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 23:37:20,452 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:37:20,452 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 23:37:20,452 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-11-20 23:37:20,452 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2021-11-20 23:37:20,452 INFO L854 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~short11#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))) [2021-11-20 23:37:20,452 INFO L858 garLoopResultBuilder]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2021-11-20 23:37:20,453 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:37:20,453 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-11-20 23:37:20,453 INFO L854 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|)) [2021-11-20 23:37:20,453 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2021-11-20 23:37:20,453 INFO L858 garLoopResultBuilder]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2021-11-20 23:37:20,453 INFO L854 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~short11#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))) [2021-11-20 23:37:20,453 INFO L861 garLoopResultBuilder]: At program point L76(lines 58 77) the Hoare annotation is: true [2021-11-20 23:37:20,453 INFO L858 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-11-20 23:37:20,454 INFO L858 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-11-20 23:37:20,454 INFO L854 garLoopResultBuilder]: At program point L43-3(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|))) [2021-11-20 23:37:20,454 INFO L858 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2021-11-20 23:37:20,454 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-11-20 23:37:20,454 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 14 35) no Hoare annotation was computed. [2021-11-20 23:37:20,454 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-11-20 23:37:20,454 INFO L858 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-11-20 23:37:20,454 INFO L854 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2021-11-20 23:37:20,454 INFO L858 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-11-20 23:37:20,455 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-11-20 23:37:20,455 INFO L861 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 14 35) the Hoare annotation is: true [2021-11-20 23:37:20,455 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 14 35) no Hoare annotation was computed. [2021-11-20 23:37:20,458 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:20,460 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:37:20,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:37:20 BoogieIcfgContainer [2021-11-20 23:37:20,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:37:20,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:37:20,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:37:20,478 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:37:20,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:14" (3/4) ... [2021-11-20 23:37:20,481 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:37:20,488 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2021-11-20 23:37:20,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-20 23:37:20,493 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-20 23:37:20,493 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 23:37:20,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:37:20,517 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2021-11-20 23:37:20,517 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 [2021-11-20 23:37:20,519 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()) [2021-11-20 23:37:20,519 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()) [2021-11-20 23:37:20,531 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:37:20,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:37:20,532 INFO L158 Benchmark]: Toolchain (without parser) took 7217.74ms. Allocated memory was 58.7MB in the beginning and 98.6MB in the end (delta: 39.8MB). Free memory was 36.2MB in the beginning and 33.9MB in the end (delta: 2.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-11-20 23:37:20,533 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:37:20,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.92ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 36.0MB in the beginning and 57.6MB in the end (delta: -21.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:37:20,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.94ms. Allocated memory is still 75.5MB. Free memory was 57.6MB in the beginning and 55.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:37:20,534 INFO L158 Benchmark]: Boogie Preprocessor took 67.58ms. Allocated memory is still 75.5MB. Free memory was 55.8MB in the beginning and 54.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:37:20,534 INFO L158 Benchmark]: RCFGBuilder took 452.30ms. Allocated memory is still 75.5MB. Free memory was 54.3MB in the beginning and 42.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:37:20,535 INFO L158 Benchmark]: TraceAbstraction took 6281.13ms. Allocated memory was 75.5MB in the beginning and 98.6MB in the end (delta: 23.1MB). Free memory was 42.3MB in the beginning and 37.6MB in the end (delta: 4.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2021-11-20 23:37:20,535 INFO L158 Benchmark]: Witness Printer took 54.31ms. Allocated memory is still 98.6MB. Free memory was 37.6MB in the beginning and 33.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:37:20,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.92ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 36.0MB in the beginning and 57.6MB in the end (delta: -21.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.94ms. Allocated memory is still 75.5MB. Free memory was 57.6MB in the beginning and 55.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.58ms. Allocated memory is still 75.5MB. Free memory was 55.8MB in the beginning and 54.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.30ms. Allocated memory is still 75.5MB. Free memory was 54.3MB in the beginning and 42.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6281.13ms. Allocated memory was 75.5MB in the beginning and 98.6MB in the end (delta: 23.1MB). Free memory was 42.3MB in the beginning and 37.6MB in the end (delta: 4.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Witness Printer took 54.31ms. Allocated memory is still 98.6MB. Free memory was 37.6MB in the beginning and 33.9MB in the end (delta: 3.8MB). 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 178 mSDsluCounter, 795 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 34 IncrementalHoareTripleChecker+Unchecked, 576 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 170 IncrementalHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 219 mSDtfsCounter, 170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 272 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, InterpolantAutomatonStates: 47, 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, 8 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 88 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 318 ConstructedInterpolants, 21 QuantifiedInterpolants, 954 SizeOfPredicates, 34 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 60/60 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: 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: 37]: Loop Invariant Derived loop invariant: (\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y - 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! [2021-11-20 23:37:20,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_820cc2b5-0e44-47f6-9ef3-d0df3af363c7/bin/utaipan-TEXQjIfE4P/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