./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS --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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:25:24,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:25:24,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:25:24,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:25:24,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:25:24,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:25:24,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:25:24,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:25:24,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:25:24,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:25:24,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:25:24,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:25:24,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:25:24,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:25:24,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:25:24,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:25:24,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:25:24,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:25:24,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:25:24,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:25:24,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:25:24,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:25:24,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:25:24,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:25:25,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:25:25,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:25:25,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:25:25,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:25:25,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:25:25,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:25:25,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:25:25,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:25:25,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:25:25,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:25:25,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:25:25,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:25:25,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:25:25,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:25:25,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:25:25,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:25:25,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:25:25,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:25:25,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:25:25,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:25:25,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:25:25,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:25:25,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:25:25,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:25:25,084 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:25:25,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:25:25,084 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:25:25,085 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:25:25,086 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:25:25,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:25:25,087 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:25:25,087 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:25:25,088 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:25:25,088 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:25:25,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:25:25,089 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:25:25,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:25:25,090 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:25:25,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:25:25,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:25:25,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:25:25,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:25:25,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:25:25,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:25:25,093 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:25:25,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:25:25,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:25:25,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:25:25,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:25:25,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:25:25,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:25,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:25:25,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:25:25,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:25:25,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:25:25,097 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:25:25,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:25:25,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:25:25,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:25:25,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2022-11-19 07:25:25,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:25:25,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:25:25,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:25:25,582 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:25:25,584 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:25:25,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2022-11-19 07:25:25,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/97b6893b7/66a48497df124d0296f4efc961a3d87e/FLAG6b46ff84e [2022-11-19 07:25:26,347 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:25:26,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i [2022-11-19 07:25:26,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/97b6893b7/66a48497df124d0296f4efc961a3d87e/FLAG6b46ff84e [2022-11-19 07:25:26,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/97b6893b7/66a48497df124d0296f4efc961a3d87e [2022-11-19 07:25:26,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:25:26,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:25:26,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:26,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:25:26,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:25:26,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:26" (1/1) ... [2022-11-19 07:25:26,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddd25fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:26, skipping insertion in model container [2022-11-19 07:25:26,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:26" (1/1) ... [2022-11-19 07:25:26,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:25:26,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:25:27,035 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2022-11-19 07:25:27,056 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2022-11-19 07:25:27,060 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2022-11-19 07:25:27,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:27,085 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:25:27,116 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2022-11-19 07:25:27,130 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2022-11-19 07:25:27,133 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2022-11-19 07:25:27,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:27,158 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:25:27,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27 WrapperNode [2022-11-19 07:25:27,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:27,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:27,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:25:27,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:25:27,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,200 INFO L138 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2022-11-19 07:25:27,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:27,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:25:27,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:25:27,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:25:27,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,223 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:25:27,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:25:27,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:25:27,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:25:27,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (1/1) ... [2022-11-19 07:25:27,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:27,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:25:27,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:25:27,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:25:27,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:25:27,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:25:27,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:25:27,431 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:25:27,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:25:27,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:25:27,749 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:25:27,749 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:25:27,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:27 BoogieIcfgContainer [2022-11-19 07:25:27,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:25:27,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:25:27,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:25:27,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:25:27,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:25:26" (1/3) ... [2022-11-19 07:25:27,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d25de0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:27, skipping insertion in model container [2022-11-19 07:25:27,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:27" (2/3) ... [2022-11-19 07:25:27,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d25de0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:27, skipping insertion in model container [2022-11-19 07:25:27,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:27" (3/3) ... [2022-11-19 07:25:27,770 INFO L112 eAbstractionObserver]: Analyzing ICFG float20.i [2022-11-19 07:25:27,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:25:27,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:25:27,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:25:27,904 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46eb395a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:25:27,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:25:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:25:27,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:27,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:25:27,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 89758, now seen corresponding path program 1 times [2022-11-19 07:25:27,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:27,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461154515] [2022-11-19 07:25:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:25:28,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:25:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:25:28,130 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:25:28,135 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:25:28,137 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-19 07:25:28,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-19 07:25:28,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-19 07:25:28,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:25:28,152 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:25:28,158 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:25:28,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:25:28 BoogieIcfgContainer [2022-11-19 07:25:28,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:25:28,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:25:28,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:25:28,194 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:25:28,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:27" (3/4) ... [2022-11-19 07:25:28,199 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:25:28,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:25:28,201 INFO L158 Benchmark]: Toolchain (without parser) took 1521.85ms. Allocated memory is still 132.1MB. Free memory was 95.5MB in the beginning and 76.0MB in the end (delta: 19.5MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-11-19 07:25:28,203 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 132.1MB. Free memory was 102.6MB in the beginning and 102.5MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:25:28,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.72ms. Allocated memory is still 132.1MB. Free memory was 95.2MB in the beginning and 103.8MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:25:28,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.25ms. Allocated memory is still 132.1MB. Free memory was 103.8MB in the beginning and 102.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:25:28,213 INFO L158 Benchmark]: Boogie Preprocessor took 25.09ms. Allocated memory is still 132.1MB. Free memory was 102.2MB in the beginning and 101.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:25:28,215 INFO L158 Benchmark]: RCFGBuilder took 524.94ms. Allocated memory is still 132.1MB. Free memory was 101.2MB in the beginning and 89.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:25:28,215 INFO L158 Benchmark]: TraceAbstraction took 435.80ms. Allocated memory is still 132.1MB. Free memory was 89.1MB in the beginning and 76.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:25:28,216 INFO L158 Benchmark]: Witness Printer took 7.16ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 76.0MB in the end (delta: 2.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:25:28,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 132.1MB. Free memory was 102.6MB in the beginning and 102.5MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.72ms. Allocated memory is still 132.1MB. Free memory was 95.2MB in the beginning and 103.8MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.25ms. Allocated memory is still 132.1MB. Free memory was 103.8MB in the beginning and 102.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.09ms. Allocated memory is still 132.1MB. Free memory was 102.2MB in the beginning and 101.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.94ms. Allocated memory is still 132.1MB. Free memory was 101.2MB in the beginning and 89.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 435.80ms. Allocated memory is still 132.1MB. Free memory was 89.1MB in the beginning and 76.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 7.16ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 76.0MB in the end (delta: 2.8kB). 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: 21]: 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 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L49] CALL bug(f) [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; VAL [\old(min)=53, min=53] [L21] COND TRUE !(ulpdiff == 0x1p-126f) VAL [\old(min)=53, min=53] [L21] reach_error() VAL [\old(min)=53, min=53] - UnprovableResult [Line: 32]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:25:28,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS --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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:25:31,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:25:31,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:25:31,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:25:31,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:25:31,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:25:31,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:25:31,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:25:31,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:25:31,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:25:31,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:25:31,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:25:31,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:25:31,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:25:31,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:25:31,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:25:31,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:25:31,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:25:31,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:25:31,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:25:31,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:25:31,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:25:31,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:25:31,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:25:31,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:25:31,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:25:31,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:25:31,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:25:31,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:25:31,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:25:31,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:25:31,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:25:31,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:25:31,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:25:31,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:25:31,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:25:31,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:25:31,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:25:31,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:25:31,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:25:31,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:25:31,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:25:31,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:25:31,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:25:31,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:25:31,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:25:31,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:25:31,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:25:31,223 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:25:31,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:25:31,224 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:25:31,224 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:25:31,225 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:25:31,226 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:25:31,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:25:31,228 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:25:31,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:25:31,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:25:31,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:25:31,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:25:31,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:25:31,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:25:31,230 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:25:31,231 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:25:31,231 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:25:31,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:25:31,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:25:31,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:25:31,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:25:31,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:25:31,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:25:31,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:31,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:25:31,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:25:31,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:25:31,235 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:25:31,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:25:31,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:25:31,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:25:31,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:25:31,237 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_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2022-11-19 07:25:31,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:25:31,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:25:31,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:25:31,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:25:31,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:25:31,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2022-11-19 07:25:31,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/8d93d19f2/7b51f247ee3f41318cad3a6245e383d7/FLAG1d267d6ce [2022-11-19 07:25:32,511 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:25:32,512 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i [2022-11-19 07:25:32,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/8d93d19f2/7b51f247ee3f41318cad3a6245e383d7/FLAG1d267d6ce [2022-11-19 07:25:32,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/data/8d93d19f2/7b51f247ee3f41318cad3a6245e383d7 [2022-11-19 07:25:32,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:25:32,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:25:32,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:32,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:25:32,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:25:32,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:32" (1/1) ... [2022-11-19 07:25:32,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f65ab3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:32, skipping insertion in model container [2022-11-19 07:25:32,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:32" (1/1) ... [2022-11-19 07:25:32,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:25:32,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:25:33,102 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2022-11-19 07:25:33,115 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2022-11-19 07:25:33,120 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2022-11-19 07:25:33,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:33,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:25:33,159 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2022-11-19 07:25:33,164 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2022-11-19 07:25:33,185 WARN L234 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_bd05daf8-5c3f-4130-8118-b08879225c93/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2022-11-19 07:25:33,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:33,221 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:25:33,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33 WrapperNode [2022-11-19 07:25:33,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:33,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:33,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:25:33,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:25:33,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,265 INFO L138 Inliner]: procedures = 19, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2022-11-19 07:25:33,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:33,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:25:33,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:25:33,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:25:33,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:25:33,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:25:33,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:25:33,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:25:33,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (1/1) ... [2022-11-19 07:25:33,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:33,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:33,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:25:33,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:25:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:25:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:25:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:25:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:25:33,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:25:33,504 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:25:35,987 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:25:35,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:25:35,995 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:25:35,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:35 BoogieIcfgContainer [2022-11-19 07:25:35,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:25:36,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:25:36,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:25:36,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:25:36,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:25:32" (1/3) ... [2022-11-19 07:25:36,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1c386e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:36, skipping insertion in model container [2022-11-19 07:25:36,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:33" (2/3) ... [2022-11-19 07:25:36,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1c386e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:36, skipping insertion in model container [2022-11-19 07:25:36,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:35" (3/3) ... [2022-11-19 07:25:36,008 INFO L112 eAbstractionObserver]: Analyzing ICFG float20.i [2022-11-19 07:25:36,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:25:36,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:25:36,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:25:36,106 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6223cf6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:25:36,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:25:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:25:36,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:36,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:25:36,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:36,128 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-11-19 07:25:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:25:36,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595110169] [2022-11-19 07:25:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:36,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:25:36,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:25:36,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:25:36,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:25:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:25:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:25:36,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:25:36,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:25:36,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595110169] [2022-11-19 07:25:36,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595110169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:36,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:25:36,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:25:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103962576] [2022-11-19 07:25:36,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:25:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:25:36,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:25:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:25:36,422 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:36,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:36,441 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-11-19 07:25:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:25:36,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:25:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:36,453 INFO L225 Difference]: With dead ends: 43 [2022-11-19 07:25:36,454 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:25:36,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:25:36,462 INFO L413 NwaCegarLoop]: 22 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, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:25:36,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:25:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:25:36,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 07:25:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2022-11-19 07:25:36,521 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 6 [2022-11-19 07:25:36,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:36,522 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2022-11-19 07:25:36,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2022-11-19 07:25:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:25:36,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:36,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:25:36,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-19 07:25:36,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:25:36,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:36,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:36,742 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-11-19 07:25:36,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:25:36,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96627458] [2022-11-19 07:25:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:25:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:25:36,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:25:36,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:25:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:36,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:25:36,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:25:37,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:25:37,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:25:37,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96627458] [2022-11-19 07:25:37,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96627458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:37,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:25:37,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:25:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922384612] [2022-11-19 07:25:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:37,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:25:37,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:25:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:25:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:25:37,500 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:39,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:25:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:40,181 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2022-11-19 07:25:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:25:40,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:25:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:40,183 INFO L225 Difference]: With dead ends: 19 [2022-11-19 07:25:40,183 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 07:25:40,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:25:40,185 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:25:40,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 1 Unknown, 4 Unchecked, 2.5s Time] [2022-11-19 07:25:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 07:25:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 07:25:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2022-11-19 07:25:40,190 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 6 [2022-11-19 07:25:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:40,191 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2022-11-19 07:25:40,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:25:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2022-11-19 07:25:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:25:40,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:40,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:40,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:25:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:25:40,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1928169781, now seen corresponding path program 1 times [2022-11-19 07:25:40,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:25:40,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670542392] [2022-11-19 07:25:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:40,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:25:40,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:25:40,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:25:40,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:25:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:40,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:25:40,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:57,847 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:25:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:25:59,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:25:59,370 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:25:59,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670542392] [2022-11-19 07:25:59,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670542392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:59,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:25:59,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:25:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100741589] [2022-11-19 07:25:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:59,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:25:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:25:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:25:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:25:59,373 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:01,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:26:12,418 WARN L233 SmtUtils]: Spent 9.20s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:12,624 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2022-11-19 07:26:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:26:12,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:26:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:12,626 INFO L225 Difference]: With dead ends: 17 [2022-11-19 07:26:12,626 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 07:26:12,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:26:12,628 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:12,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 7 Unchecked, 2.4s Time] [2022-11-19 07:26:12,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 07:26:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 07:26:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-11-19 07:26:12,633 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 10 [2022-11-19 07:26:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:12,633 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-11-19 07:26:12,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-11-19 07:26:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:26:12,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:12,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:26:12,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:12,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:12,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1162826544, now seen corresponding path program 1 times [2022-11-19 07:26:12,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:26:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257734603] [2022-11-19 07:26:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:12,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:12,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:26:12,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:26:12,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:26:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:13,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:26:13,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:14,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:26:14,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:26:14,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257734603] [2022-11-19 07:26:14,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257734603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:14,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:14,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:26:14,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373266794] [2022-11-19 07:26:14,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:14,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:26:14,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:26:14,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:26:14,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:26:14,119 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:16,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:26:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:16,943 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-11-19 07:26:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:26:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:26:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:16,944 INFO L225 Difference]: With dead ends: 15 [2022-11-19 07:26:16,944 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:26:16,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:26:16,946 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:16,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 1 Unknown, 8 Unchecked, 2.5s Time] [2022-11-19 07:26:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:26:16,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:26:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:26:16,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-19 07:26:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:16,948 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:26:16,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:26:16,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:26:16,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-19 07:26:16,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-19 07:26:16,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-19 07:26:16,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:17,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:17,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:26:17,226 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-11-19 07:26:17,226 INFO L899 garLoopResultBuilder]: For program point L27-2(line 27) no Hoare annotation was computed. [2022-11-19 07:26:17,226 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2022-11-19 07:26:17,226 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-11-19 07:26:17,227 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-19 07:26:17,227 INFO L899 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2022-11-19 07:26:17,227 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 07:26:17,227 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 26 35) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-11-19 07:26:17,228 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-19 07:26:17,228 INFO L902 garLoopResultBuilder]: At program point L57(lines 47 58) the Hoare annotation is: true [2022-11-19 07:26:17,228 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-11-19 07:26:17,228 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:26:17,229 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-11-19 07:26:17,235 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-11-19 07:26:17,236 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 16 24) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-11-19 07:26:17,236 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-19 07:26:17,236 INFO L899 garLoopResultBuilder]: For program point L17-2(line 17) no Hoare annotation was computed. [2022-11-19 07:26:17,236 INFO L899 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2022-11-19 07:26:17,237 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2022-11-19 07:26:17,237 INFO L902 garLoopResultBuilder]: At program point L42-3(lines 37 45) the Hoare annotation is: true [2022-11-19 07:26:17,237 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-11-19 07:26:17,237 INFO L899 garLoopResultBuilder]: For program point L38-2(line 38) no Hoare annotation was computed. [2022-11-19 07:26:17,238 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2022-11-19 07:26:17,242 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 07:26:17,244 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:26:17,255 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-19 07:26:17,271 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-19 07:26:17,272 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-19 07:26:17,274 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-19 07:26:17,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:26:17 BoogieIcfgContainer [2022-11-19 07:26:17,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:26:17,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:26:17,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:26:17,277 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:26:17,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:35" (3/4) ... [2022-11-19 07:26:17,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:26:17,298 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-19 07:26:17,299 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 07:26:17,299 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 07:26:17,299 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:26:17,363 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:26:17,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:26:17,365 INFO L158 Benchmark]: Toolchain (without parser) took 44499.30ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 37.7MB in the beginning and 52.7MB in the end (delta: -15.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-11-19 07:26:17,366 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:26:17,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.93ms. Allocated memory is still 58.7MB. Free memory was 37.5MB in the beginning and 42.4MB in the end (delta: -4.9MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-19 07:26:17,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.96ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 40.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:26:17,367 INFO L158 Benchmark]: Boogie Preprocessor took 43.86ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:26:17,368 INFO L158 Benchmark]: RCFGBuilder took 2686.88ms. Allocated memory is still 58.7MB. Free memory was 39.3MB in the beginning and 29.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:26:17,369 INFO L158 Benchmark]: TraceAbstraction took 41275.94ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 28.8MB in the beginning and 55.4MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:26:17,369 INFO L158 Benchmark]: Witness Printer took 87.07ms. Allocated memory is still 75.5MB. Free memory was 55.4MB in the beginning and 52.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:26:17,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.93ms. Allocated memory is still 58.7MB. Free memory was 37.5MB in the beginning and 42.4MB in the end (delta: -4.9MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.96ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 40.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.86ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2686.88ms. Allocated memory is still 58.7MB. Free memory was 39.3MB in the beginning and 29.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 41275.94ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 28.8MB in the beginning and 55.4MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 87.07ms. Allocated memory is still 75.5MB. Free memory was 55.4MB in the beginning and 52.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 41.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 47 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 3 QuantifiedInterpolants, 163 SizeOfPredicates, 12 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2022-11-19 07:26:17,400 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-19 07:26:17,400 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 26]: Loop Invariant [2022-11-19 07:26:17,404 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-19 07:26:17,404 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:26:17,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd05daf8-5c3f-4130-8118-b08879225c93/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE